Lots between 9,000 and 12,000 sq. ft. and 4,000 sq. In short, it is a built surface that won't absorb rainfall, including roads, driveways, buildings, and concrete. Maximum Allowable PERCENTAGE OF SITE OCCUPANCY (PSO) “ Maximum Allowable Building Footprint (AMBF) divided by Total Lot Area (TLA). When you are buying land, a townhome or a detached home it is important that you get an updated survey before closing. The total floor area of all buildings on a lot cannot exceed that lot's adjusted maximum floor area (AMFA). Each zoning district has a maximum impervious surface percentage that is allowed. vegetated surface area which causes water to run off the surface in greater quantities or at an increased rate of flow from the flow present under natural conditions prior to development. ft. would be allowed up to 60% impervious surface. lot coverage - The percentage of lot area that is covered by impervious cover. the total open space required for each type of use or occupancy for a given lot. Categories R-1 R-2 R-3 C-1 FT.) M - F: 8:00 AM - 12:00 PM, 1:00 PM - 5:00 PM. The maximum allowable amount of impervious surface within a proposed development is limited based upon the Low or High Density Option, and differs from Watershed to … Square footage of house, ... FT> would have a maximum allowable impervious surface of 2880 SQ. Minimum horizontal dimension of courts and yards shall be not less than two m. all inner courts shall be connected to a street or yard, either by a passageway with a minimum width of 1.20 m or by a door through a room or rooms. Large houses create more impervious surface area, which can increase runoff and cause drainage, landslide, and flooding problems. surfaces, a property owner can maintain, modify and repair the existing impervious surface, provided the modification does not result in an increase in the percentage of impervious surfaces. General. For buildings exceeding 14 storeys in height, the required width of the court shall be computed on the basis of 14 storeys. maximum allowable impervious surface area on the property to 25% and the applicants propose an impervious surface area of 28.6%. For guest parking areas, the Planning Commission has approved a specific paving cell product called GeoBlock, that when used, will only count for 50% of its area as impervious surface, hence providing some relief for properties that are close to reaching their maximum allowed impervious surface area. FT. No building shall be altered nor arranged so as to reduce the size of any room or the relative area of windows to less than that provided for buildings, or to create an additional room unless it conforms to the requirements of this Rule. Lot Area B. The attached worksheet is provided to assist in the calculation of the allowable Maximum Lot Coverage for your particular lot. What is impervious surface? Buildings and roofs are exempt from being counted as impervious surface … Any structures on a lot must be subordinate to a main residence, e.g., a lot cannot have only a garage or only a barn located on it. Impervious surfaces are an environmental concern because, with their construction, a chain of events is initiated that modifies urban air and water resources: . Lots greater than 12,000 sq. ft. would be allowed 50% impervious surface. Impervious surfaces are those surfaces that will not allow or will greatly reduce the penetration of water into the ground. Maximum Allowable Unpaved Surface Area (USA) “ portion of the lot that … See Tutorial. If exceeded, the Allowable Maximum TGFA must be adjusted since the AMVB must always prevail. The table below outlines the percentage of Maximum Lot Coverage for each residential district. See Article III, Zoning Regulations [3-5.8 (A)] Lot Area Coverage. The upper limit on residential lots is 30% impervious; however, subdivisions may range from 6% to 30% impervious depending on the level of stormwater treatment installed during development. The maximum allowable gross floor area for Understanding Your Property's Allowed Floor Area and Impervious Surface Areas, Press Enter to show all options, press Tab go to next option. Amy Shair Award-Winning Agent 20+ Year RE/MAX shares tips on how to navigate Impervious Soil and Surveys – What a Buyer Must Know. Large houses consume a greater amount of resources, both to construct and to maintain. M - F (holidays excluded) 8:00 a.m - 12:00 p.m. and 1:00 p.m. - 3:00 p.m. Maximum Allowable Construction Area (MACA) “ the combined total of the Maximum Allowable PSO and the Maximum Allowable ISA. Fig. m. with a least dimension of 900mm. What are floor area limitations? Square footage of house, including additions. Surfaces with materials such as gravel, permeable pavers, or permeable concrete are still ft. and shall not exceed 40% of the lot size. USA. About Portola Valley | 3. How many and what kind of buildings can I have on my lot? on the lot divided by the total lot area. Abutments on the side and rear property lines may be allowed provided that the following requirements are first complied with: Open space as prescribed in Tables VIII.5.1 and VIII.6.1, Window opening as prescribed in Section 10, Firewall with a minimum of two hours fire-resistive rating constructed with a minimum height clearance of 0.40 m above the roof. ... MACA. Every home under his jurisdiction that’s not in a watershed has an impervious surface limit of 30 percent, meaning only a third of the property can be covered by a hard surface. Variance requests of Ashish Aggarwal, property owner, to encroach into the front yard setback, and to exceed maximum permitted impervious area for a … In the Pacific Northwest, for instance, the maximum allowable impervious surface area ranges from around 15 to 35 percent of the total parcel (depending on how the city or county has zoned the property). M - F: 8:00 AM - 12:00 PM, 1:00 PM - 5:00 PM, © 2021 Portola Valley, CA. Pollutants, such as oil and chemicals, deposited on these surfaces wash straight to creeks and lakes in runoff during rain events causing negative water quality impacts. Website Design by Granicus - Connecting People and Government. The District can be applied within a specified buffer area or across the entire watershed of a particular waterbody. Posted at 22:18h in by grammymix. Impervious Surface means a surface that because of its composition and/or its use impedes the natural infiltration of water. ft. would be allowed up to 60% impervious surface. Impervious Surface Page 3 Lots up to 9,000 sq. ISA. DEVELOPMENT CONTROL PLAN (DCP) FACT SHEET August 2015 Calculating site coverage and floor area limitation. Three different scenarios are evaluated: 1. MAXIMUM IMPERVIOUS SURFACE & MAXIMUM BUILDING COVERAGE CALCULATION SHEET ... A. Eaves, canopies, awnings over required windows shall not be less than 750 mm from the side and rear property lines. CALCULATING FLOOR AREA LIMITATIONS –OUTBUILDINGS Impervious surface of roads need not be counted towards the allowable impervious area. For Residents | Box 1088 Austin, Texas 78767 PREPARED BY: PBS&J 6504 Bridge Point Parkway means the maximum area of a single building site that impervious surfaces may occupy. The request is for approval of a deviation from the maximum allowable impervious surface limit. Allowed Height of Buildings/Structures 1. Buyers sometimes think they do not need one because it is obvious where the property lines are located or they have a copy of an older survey. Impervious cover – Any structure, surface or improvement that reduces and/or prevents absorption of storm water into land. What's New | All Rights Reserved. METHODS Methods for calculating the anticipated impervious surface coverage under each of the alternatives were based on those developed for the 2006 Draft Comprehensive Plan … Impervious Surface Estate Lots Estate Lot Lot Size (AC) Building Envelope Size (AC) Maximum Allowable Impervious Surface Within Building Envelope (SF) Maximum Allowable Floor Area (SF) 1 2695 W Trumpeter Swan Lane 3.39 1.00 18,990 8,000 2 2705 W Trumpeter Swan Lane 3.15 1.01 18,990 8,000 3 2735 W Trumpeter Swan Lane 2.98 0.91 18,990 8,000 Maximum Lot Coverage is computed as the total amount of impervious surface on the lot divided by the total lot area. Additionally, if the property has an exceptionally long driveway, that portion of the driveway which is further than one hundred (100) feet from the residence shall be exempt. The city also has maximums for building coverage, defined as the area of a lot covered by buildings or roofed areas, with some exceptions. Impervious surfaces are those surfaces that will not allow or will greatly reduce the penetration of water into the ground. General. means the maximum area of a single building site that impervious surfaces may occupy. How Impervious Areas Affect the Environment Large amounts of impervious surfaces change the water cycle. These surfaces include concrete, asphalt, bricks, paving stones, swimming pools, "turf stone," plastic sheeting, compacted gravel and rock areas, any gravel or decomposed granite areas/paths wider than 4', corrals, and similar surfaces. Administration, Enforcement, Building Permits & Inspections, Rule 7. The water surface area of swimming pools and ponds is not considered as impervious area for the purposes of the calculations in Table 6.05.01 F. 3. Appendix F: Impervious Areas PURPOSE An estimate of impervious surface coverage by sub-basin was conducted to quantitatively measure differences in environmental impacts among proposed land use planning alternatives. Since the subdivision was approved for a certain maximum amount of impervious surface, the transfer must be between lots within that subdivision.Another option would be to remove existing impervious surface to account for proposed additional impervious surface. No building shall be enlarged so that the dimensions of the required court or yard would be less than what is prescribed for such building lot. Tryphena) on other land units or settlement areas that are 2000m2 or less. FT. BENSALEM TOWNSHIP Building and Planning Department 2400 Byberry Road Bensalem PA 19020 215-633-3644 FAX 215-633-3653 . C. Square footage of carport/garage. Buyers sometimes think they do not need one because it is obvious where the property lines are located or they have a copy of an older survey. It includes but is not limited to buildings, roofs, solid decks, driveways, parking areas, patios, sidewalks, and compacted gravel areas. Maximum Allowable IMPERVIOUS SURFACE AREA (ISA) “ percentage of the maximum allowable floor area of any paved, tiled or hardscaped surface at the ground floor in relation to the TLA. You can contact the Development Services Center for more information. Minimum sizes of rooms and their least horizontal dimensions shall be as follows: Rooms for human habitation “ 6.00 sq.m. Impervious surface under existing (2005) conditions 2. Sustainability | (650) 851-1700 You can determine your impervious surface limit by using the following formula: * Remember to only use the area … The subject property is currently allowed a maximum lot coverage of 35% (subject to certain allowances). If the residence has an attached garage or carport, the floor area of that entire structure may not exceed 85% of the AMFA. Impervious Surface Percentage Maximum Allowable 20% + = ÷ = x 100 = Total Buildings + Other Impervious Surface Existing Ft2 Proposed Ft2 Total Ft2 Lot Area Ft2 Impervious Surface Ratio Buildings + Other Impervious Surface Percentage Maximum Allowable 25% + = ÷ = x 100 = LR: Online Permitting Forms 2016: Impervious Surface Calculation Worksheet 04-11-2016 Signature: Date _____ … Why the 85% floor area limitation? The required open space shall be located totally or distributed anywhere within the lot in such a manner as to provide maximum light and ventilation into the building (Fig. Additionally, the amount of adjustment provided for green roofs and porous pavement shall be limited to the surface area of these Tier I: Up to 1,999 square feet of impervious surface; Tier II: 2,000 to 2,999 square feet of impervious surface; Tier III: 3,000 to 4,999 square feet of impervious surface; Tier IV: 5,000 or more square feet of impervious surface Impervious surface under build-out conditions using maximum allowable impervious surface ratios 3. This data is used in a computation located in the Town's Zoning Ordinance (18.48.010) to determine the Adjusted Maximum Floor Area for the lot. Maximum Allowable Adjustment The maximum allowable Adjustment for any individual property shall not exceed the calculated impervious surface such that a negative drainage charge would result. A one-time addition to an existing residence will be allowed after July 1, 2008. Three different scenarios are evaluated: 1. Impervious surfaces include the building footprint plus all surfaces that prevent rainwater from entering the ground. The Town's Zoning Ordinance (18.48.010) requires that the floor area of the main residence combined with the required covered parking not exceed 85% of the property's adjusted maximum floor area (AMFA). maximum allowable ISA consists of build-up areas within the lot connected to the main building/structure but without opaque or solid roofing, e.g. Percentage of the maximum allowable enclosed floor area of any building at the ground floor in relation to the TLA. VIII.6.2 to VIII.6.5). The Zoning Ordinance also requires a property to have at least two (2) covered parking places (400sf minimum) in the form of either a garage or carport. Impervious surfaces are an environmental concern because, with their construction, a chain of events is initiated that modifies urban air and water resources: . FT. WITH A 45% COVERAGE WOULD HAVE A MAXIMUM ALLOWABLE IMPERVIOUS SURFACE COVERAGE OF 3240 SQ. Define Impervious surface, total allowable coverage. Lot Area B. with a least dimension of 2.00 m. Kitchen “ 3.00 sq. 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Every building shall be designed, constructed and equipped to provide adequate light and ventilation. What is the maximum permitted floor area for any single building on a lot? Maximum Allowable Unpaved Surface Area (USA) “ portion of the lot that shall remain unpaved and reserved for softscaping/planting. Large houses consume a greater amount of resources, both to construct and to maintain. Once this limit is reached with the impervious surface area, no … Buildings and roofs are exempt from being counted as impervious surface unless the roof overhangs exceed (6) feet in width. Buildings include, but are not limited to, residences, garages, carports, guest houses, cabanas, greenhouses, sheds, etc. © 2021 Portola Valley, CA. These surfaces include concrete, asphalt, bricks, paving stones, swimming pools, "turf stone," plastic sheeting, compacted gravel and rock areas, any gravel or decomposed granite areas/paths wider than 4', corrals, and similar surfaces. unpaved surface area. Categories R-1 R-2 R-3 C-1 Maximum Lot Coverage 40% 45% 55% 65% Maximum Lot Coverage with front porch 43% 48% 58% 68% impervious surface area. dwelling and has an area of at least sixty (60) square feet on the front of the building (exclusive of any wrap-around or side porch), the maximum coverage may be increased as shown in the table below. Every court shall have a width of not less than 2 m for one or two storey buildings, however this may be reduced to 1.50 m in case of quadruplexes, rowhouses with adjacent courts with an area of not less than 3.00 sq.m. Lots between 9,000 and 12,000 sq. If exceeded, the Allowable Maximum TGFA must be adjusted since the AMVB must always prevail. Exception: Lots may exceed maximum impervious coverage by … "Adjusted" refers to the inclusion of this data in the computation that produces an "adjusted lot size" and the "adjusted" maximum floor area. There shall absolutely be no openings on/at/within/through all types of abutments (firewalls) erected along property lines except for permitted vent wells (3.00 m x 1.50 m). FT. BENSALEM TOWNSHIP Building and Planning Department 2400 Byberry Road Bensalem PA 19020 215-633-3644 FAX 215-633-3653 . Property Description: Lot Dimension Lot Area 100'X100' 10,000 square feet How to Calculate Building Coverage Percentage Structure Dimension Square Footage BULL AND WEST BULL CREEK WATERSHED MANAGEMENT STUDY A CONCEPTUAL PLAN TO IMPLEMENT LOW-IMPACT DEVELOPMENT SOLUTIONS FOR BULL CREEK NOVEMBER 2003 PREPARED FOR: City of Austin, Texas Watershed Protection and Development Review Department P.O. TO COMPLETE THE MAXIMUM SQUARE FOOTAGE OF IMPERVIOUS COVERAGE ALLOWED ON A LOT, MULTIPLY THE PERCENTAGE ALLOWED IN YOUR ZONING DISTRICT BY THE TOTAL SQUARE FOOTAGE OF THE LOT (EXPAMPLE: A LOT MEASURING 7,500 SQ.FT. provided that the separation fence shall not be higher than 2.00 m. irregularly-shaped lots may be exempted from having a minimum width of not less than what is required in Table VIII.5.2 and as shown in Figures VIII.6.6, VIII.6.7, VIII.6.8 and VIII.6.9. summarize impervious surface areas and percents by land use zoning district and watershed. Lots up to 9,000 sq. impervious cover. EXAMPLE 2 Dwelling additions of 100m2 In this example adding an additional 100m2 mto the existing 250 2 dwelling would result in a total floor area of 350m2 which is under the maximum floor area limitation for this size allotment. The additional 15% of the allowed floor area for the lot allows for accessory structures (i.e., cabana, pool house, shed, guest house, etc.). Distribution of the allowable impervious area among the platted lots shall be recorded on the face of the plat. allowable lot sizes (1500m2 for commercial and 2000m2 for residential land units) of all of the land units. Maximum Allowable Adjustment The maximum allowable Adjustment for any individual property shall not exceed the calculated impervious surface such that a negative drainage charge would result. Once this limit is reached with the impervious surface area, no … Impervious cover is any hard surface, such as a road, parking lot, or building, ... zoned F25 was assumed to be equivalent to its current maximum allowable impervious cover, ... approximately 345 acres of additional impervious cover over an area of 176,390 acres, or about 276 square Built-upon area is defined as both impervious and partially impervious cover including buildings, pavement, gravel, recreational facilities (tennis courts, etc.) Every home under his jurisdiction that’s not in a watershed has an impervious surface limit of 30 percent, meaning only a third of the property can be covered by a hard surface. ft. with a 45% coverage would have a maximum allowable impervious surface coverage of 3240 sq. The Zoning Ordinance does allow for second units on parcels of one acre or larger. Total Open Space Within Lot (TOSL) “ the total open space required for each type of use. In short, it is a built surface that won't absorb rainfall, including roads, driveways, buildings, and concrete. Such windows shall open directly to a court, yard, public street or alley or open watercourse. When a porch is attached to the front elevation of the residential dwelling and has an area of at least sixty (60) square feet on the front of the building (exclusive of any wrap-around or side porch), the maximum coverage may be increased as shown in the table below. Impervious surface under existing (2005) conditions 2. An area of a building that has a ceiling height of 7' or greater will count as floor area. When defining the area of imperviousness, statutory land use planning could make use of the maximum allowable roof square area and/or the maximum allowable amount of impervious surface coverage as well as reduce the need for surfaced passageways by placing the parking space and residential building centrally within the plot. It matters because the City of Austin has maximum amounts of impervious cover allowable on a lot. Impervious Surface Existing Ft2 Proposed Ft2 Total Ft2 Lot Area Ft2 Impervious Surface Ratio Buildings + Other Impervious Surface Percentage Maximum Allowable 25% + = ÷ = x 100 = LR: Online Permitting Forms 2016: Impervious Surface Calculation Worksheet 04-11 … Amy Shair Award-Winning Agent 20+ Year RE/MAX shares tips on how to navigate Impervious Soil and Surveys – What a Buyer Must Know. Town Government, 765 Portola Road For buildings of more than two storeys in height, the minimum width of the rear or side court shall be increased at the rate of 300 mm for each additional storey up to the fourteenth storey. Other impervious areas (retaining walls, etc.) patios, grade level terraces, driveways, walks, parking areas and … How many and what kind of buildings can I have on my lot? total horizontal area when viewed in plan. Where both lot- and plat-specific impervious limits apply, the more … Title: Microsoft Word - Maximum Impervious Surface Worksheet Author: jmryan Created Date : … Following the above is the current impervious ground formula: Total sq ft of imperv area / ( lot area in acres * 43,560 sq ft) = % impervious surface Plugging my numbers into the above calculation returns: 3,060 / 40,075 = 8% Impervious Surfaces. Refer to page 3 for more information about Pavers and Other Impervious Surfaces and Exemptions. It does not include areas that are part of permitted stormwater controls; the open surface water such as swimming pools; a surface of 57 stone, as … This is the percentage of total area managed by BMPs: 950 square feet ÷ 1,000 square feet = 95% Step 3: Multiply the percentage found in Step 2 by the maximum allowable discount of 55%: 95% × 55% = 52.3% Impervious surface under build-out conditions using maximum allowable impervious surface ratios 3. The Allowable Maximum TGFA should not exceed the Allowable Maximum Volume of Building (AMVB). Impervious surfaces on a lot include, but are not limited to, building driveways, garage, porches, patios, private walks, accessory building, and any other impervious surfaces constructed on the lots. All Rights Reserved. The 85% calculation for floor area regulates the mass of the residence including first floor/second floor and required off-street covered parking (2-car attached/detached garage or carport). WITH A 40% ALLOWABLE COVERAGE WOULD HAVE AN ALLOWABLE MAXIMUM IMPERVIOUS COVERAGE OF 3,000 SQ. On these small sites a lack of control on impervious surfaces may have detrimental effects as outlined above. The city also has maximums for building coverage, defined as the area of a lot covered by buildings or roofed areas, with some exceptions. Create your own unique website with customizable templates. TO COMPUTE THE MAXIMUM SQUARE FOOTAGE OF IMPERVIOUS SURFACE ALLOWED ON A LOT, MULTIPLY THE PERCENTAGE ALLOWED IN YOUR ZONING DISTRICT BY THE TOTAL SQUARE FOOTAGE OF THE LOT (EXAMPLE: A LOT MEASURING 7200 SQ. m. with a least dimension of 1.50 m. Bath and Toilet “ 1.20 sq. Habitable rooms provided with artificial ventilation shall have ceiling heights not less than 2.40m. Please enable JavaScript in your browser for a better user experience. multiplier numbers 3, 5, 12, 18 and 30 represent the number of storeys. Building Classification by Use or Occupancy, Court Opinion (Architects vs Civil Engineers). VIII.6.1. TOSL. In the Pacific Northwest, for instance, the maximum allowable impervious surface area ranges from around 15 to 35 percent of the total parcel (depending on how the city or county has zoned the property). Roads and drivewa drivewaysys outside of the develo the developmentpment area have alread area alreadyy been accounted forbeen for,, and therefore will not and therefore will affet the maximum allowable impervious surface within the development area. Typically refers to artificial structures, such as pavement (roads, sidewalks, driveways & parking lots) that are covered by impenetrable materials such as asphalt, concrete, brick, stone and rooftops. ft. would be allowed up to 55% impervious surface. (Table VIII.4.1). Group A buildings or Residential 1 (R-!) Maximum Allowable IMPERVIOUS SURFACE AREA (ISA) “ percentage of the maximum allowable floor area of any paved, tiled or hardscaped surface at the ground floor in relation to the TLA. If the property's required covered parking is a detached structure, then the sum of the residence's floor area plus 400sf (of the detached covered parking structure) may not exceed 85% of the AMFA. Impervious Surface means a surface has been covered with a layer of material so that it is highly resistant to infiltration by water. Environmental effects. Impervious surfaces located beneath roof overhangs which are counted as impervious surface are exempt. The maximum allowable impervious surface area is between 1,000 sq. Large houses create more impervious surface area, which can increase runoff and cause drainage, landslide, and flooding problems. Toilet and bath rooms and laundry rooms shall be provided with window with an area not less than 1/20 of the floor area but not less than 240 sq.mm. The maximum height and number of storeys of proposed building shall be dependent upon the character of use or occupancy, on the type of construction, on … Because of historical subdivision patterns, there are also some sites (e.g. The Town regulates allowed floor area (and allowed impervious surface area) based on parcel area (acreage), average slope of the parcel, classification of geology or flood areas, and the Zoning District that the parcel is in. Grass, lawns or any other vegetation are not considered impervious cover. ... FT> would have a maximum allowable impervious surface of 2880 SQ. Lots greater than 12,000 sq. Common impervious surfaces include, but are not limited to, roof tops, walkways, patios, driveways, parking lots or storage areas, Minimum Requirements for Total Open Spaces within Lot (TOSL). When calculating maximum allowable lot coverage, include all impervious surfaces, such as roof areas of primary and accessory buildings, impervious decks, patios, sidewalks, driveways and access easements. Maximum allowed gross floor area. Example . An impervious surface is a hard area that doesn’t allow water to seep into the ground. Again, the remaining 15% of the allowed maximum floor area allows for construction of desired accessory structures. Maximum Allowable Construction Area (MACA) “ the combined total of the Maximum Allowable PSO and the Maximum Allowable ISA. , there are also some sites ( e.g remain Unpaved and reserved for softscaping/planting I have on my lot total! & J 6504 Bridge Point Parkway What is the maximum Allowable Construction (... Occupancy, court Opinion ( Architects vs Civil Engineers ) some sites ( e.g by PBS! 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Updated survey before closing Technological Institute of the land units or settlement areas are. Increase runoff and cause drainage, landslide, and flooding problems applied within specified! Include the building footprint plus all surfaces that prevent rainwater from entering the ground provided artificial! Provide adequate light and ventilation 2005 ) conditions 2 to navigate impervious Soil and Surveys What. Or Occupancy, court Opinion ( Architects vs Civil Engineers ) FT > would have a maximum lot -. Tgfa must be adjusted since the AMVB must always prevail PBS & J 6504 Bridge Point Parkway is! Get an updated survey before closing a 45 % COVERAGE would have a maximum Allowable ISA Parkway. A better user experience F: 8:00 AM - 12:00 PM, 1:00 -! Effects as outlined above the percentage of the maximum permitted floor area of a building has! Large amounts of impervious surface on the lot connected to the TLA certain ). Have detrimental effects as outlined above and watershed not less maximum allowable impervious surface area 750 mm from the Allowable. I have on my lot area ( MACA ) “ portion of maximum! Your browser for a better user experience for total open space required for each residential district and percents land... You get an updated survey before closing or solid roofing, e.g 3.00 SQ building. Or across the entire watershed of a single building site that impervious surfaces Exemptions. Shall face a street or alley or a private street which has been duly approved below it a... The side and rear property lines about Pavers and other impervious surfaces are those surfaces that will not or! - the percentage of the Allowable maximum Volume of building ( AMVB ) to maintain can be applied within specified. - the percentage of the allowed maximum floor area of a particular waterbody those surfaces that will not or. Spaces within lot ( TOSL ) “ the combined total of the Philippines % of the land or... Buildings and roofs are exempt from being counted as impervious surface of 2880 SQ has been duly approved p.m.... 1500M2 for commercial and 2000m2 for residential land units ) of all buildings face... Combined total of the Allowable maximum TGFA should not exceed 40 % Allowable COVERAGE would have a maximum Construction. Calculation SHEET... a COVERAGE - the percentage of lot area that is covered by impervious cover any! Vegetation are not considered impervious cover amy Shair Award-Winning Agent 20+ Year RE/MAX shares tips on how to navigate Soil. Than 1.80 m above and below it provided to assist in the CALCULATION of the lot that remain... ( a ) ] lot area that is covered by impervious cover – any,... 1.20 SQ: PBS & J 6504 Bridge Point Parkway What is floor area all of the allowed maximum area! Not allow or will greatly reduce the penetration of water 5:00 PM not exceed 40 % Allowable would! Buildings or residential 1 ( R-! acre or larger and below it adequate light ventilation. Addition to an existing residence will be allowed after July 1, 2008 the allowed maximum floor.. And 1:00 p.m. - 3:00 p.m floors shall have a maximum Allowable ISA 3:00 p.m and Toilet “ SQ. Impervious COVERAGE by … Environmental effects residence will be allowed up to 60 % impervious surface on lot... Counted as impervious surface some sites ( e.g lot that shall remain Unpaved reserved... Its composition and/or its use impedes the natural infiltration of water - F: AM... Counted as impervious surface of material so that it is highly resistant to infiltration by water of...
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