GFA Gross Floor Area Calculator by Avenir Developments
Instant GFA from FAR/FSI or floors & coverage—built for Pakistan (CDA, LDA, SBCA, RDA) and international codes. Use marla/kanal or sq ft/sq m, and benchmark your target GFA against the permitted limit
- Pakistan-ready units (Marla, Kanal) and multiple marla standards (225 / 250 / 272.25 sq ft).
- GFA from Permitted FAR or estimate from Floors × Coverage with setback rectangle.
- Compliance check: compare Desired GFA vs Allowed GFA and see headroom / overrun in seconds.
gfa calculator
How to Use Avenir Developments' GFA Calculator
- Select units (sq ft / sq m / marla / kanal) and enter your plot area.
- Choose a mode: (a) From Permitted FAR — multiply Plot Area by FAR; or (b) From Floors & Coverage — estimate floor‑plate from coverage or setbacks and multiply by floors.
- Optionally enter a Desired GFA to compare against the allowed GFA; the tool shows a green/red indicator with percentage and headroom/overrun.
- Use marla standard presets (225 / 250 / 272.25 sq ft) to match society conventions.
- Confirm local definitions (CDA, LDA, SBCA, RDA, DHA and other authorities) before design freeze.
Input Permissible FAR
Enter the Floor Area Ratio allowed for your specific zone or locality, which can usually be obtained from local development authority regulations.
Enter Plot Area
Input the total area of your land parcel in the specified units (e.g., square feet, square yards).
CLICK 'CALCULATE'
Our tool will instantly compute the maximum permissible gross floor area for your property.
GFA (Gross Floor Area) Calculator
Calculate Gross Floor Area either from Permitted FAR (Floor Area Ratio / FSI) or by estimating Floors × Floor-plate. Basements are excluded.
Plot, Units & Inputs
From Permitted FAR (FSI)
This GFA calculator supports FAR / FSI workflows for architects, developers, planners and investors, helping evaluate zoning capacity, density and buildability in Pakistan and worldwide.
Local byelaws differ across authorities and even between phases/societies. Marla conversions vary (225 / 250 / 272.25 sq ft); coverage and height/setback rules depend on road width, plot category and use (residential, commercial, mixed‑use). Some jurisdictions exclude basements from FAR/GFA, others cap basement area for parking only. Always consult the current handbook or an Avenir Developments planner for compliance.
gross floor area calculator
What is a Gross Floor Area Calculator?
Understand Floor Area Ratio, also called Floor Space Index, used by zoning authorities to control density and building bulk on
Gross Floor Area (GFA) is the total enclosed floor area of all above‑ground floors measured to the outer face of walls. Jurisdictions vary on inclusions—balconies, shafts, terraces and voids may be excluded; basements are commonly excluded from GFA and handled by separate parking or FAR rules. GFA is a fundamental measure in urban planning, land use, and valuation because it drives density, saleable area, and project economics. Always verify definitions in the applicable byelaws, building code or zoning handbook.
gross floor area calculator
WHY AVENIR DEVELOPMENTS
Designed for architects, planners, developers, investors and students needing quick FAR checks for Pakistan and worldwide zoning contexts and approvals
- Full‑stack capability: architecture, interior design, urban design, and master planning.
- Property development expertise: land due diligence, concept‑to‑keys delivery, and stakeholder management.
- Project consultancy: feasibility studies, cash‑flow modeling, procurement, cost planning and value engineering.
- Authorities & compliance: drawings, submissions and NOC/approvals across Pakistan (CDA, LDA, SBCA, RDA, DHA).
- Digital tools leadership: calculators for FAR/FSI, GFA, parking, rental yield and construction quantities to guide better decisions.
floor area ratio calculator
Who is the GFA Calculator for?
Designed for architects, planners, developers, investors and students needing quick FAR checks for Pakistan and worldwide zoning contexts and approvals
- Architects & planners validating massing, coverage and buildability.
- Property developers & investors running quick highest-and-best-use studies and feasibility models.
- Project management & consultancy teams preparing concept design options and authority submissions.
- Quantity surveyors and cost consultants estimating construction area and budgets.
- Banks, real-estate brokers and valuers sizing projects, loans and pricing.
- Students and researchers learning FAR/FSI, coverage and density metrics.
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faqs
YOUR FREQUENTLY ASKED QUESTIONS ABOUT GFA
Get answers to common questions about GFA Gross Floor Area
Commonly, basements are excluded from GFA and FAR in Pakistan when used for parking, services or storage; however, rules differ by authority and by use. Always check the latest byelaws.
Square feet, square metres, marla and kanal, with selectable marla standards to match local society conventions.
It provides a planning‑level estimate. For design‑level accuracy, use setbacks, road widths and right‑of‑way constraints from the authority’s handbook.
Saleable/net area deducts corridors, lobbies, services and walls. It is typically 70–85% of GFA depending on building type and efficiency.
Yes. FAR/FSI and GFA are global concepts. Adjust units and confirm local definitions in your jurisdiction.
Yes. We offer end‑to‑end consultancy: concept design, density testing, cost plans, timelines and development strategy.
faqs
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