FSI & feasibility calculator
Permissible FSI, rehab & sale area, rent, corpus and feasibility — DCPR 33(7) & 33(7B)+20(B).
Free tools
Redevelopment tools built for Mumbai societies
Every calculator here answers one question your general body will ask. All tools are free, and new ones launch regularly — register your society to get early access.
Free redevelopment calculators let a housing society in Mumbai check FSI potential, extra carpet area, fair rent, corpus fund and competing developer offers before any negotiation. New here? Start with our quick answers — short explanations of what each number means, each linked to the calculator that works it out. Eight tools are live, including an FSI calculator built on DCPR 2034 and a rent comparison based on rent data for 177 localities. Each tool answers one question a general body typically asks, at no cost.
Feasibility calculator
See whether redevelopment is viable for your plot, members and location.
Additional free area calculator
Estimate how much extra carpet area members can reasonably expect.
Rent comparison tool
Compare the rent a developer offers with actual market rents across 177 Mumbai localities.
Offer comparison tool
Score up to four developer offers and see which is strongest overall.
Free offer review
Send us your developer's offer — we review it and reply in 5–10 days, free.
Corpus fund calculator
Calculate a fair corpus per sq.ft — and see whether it covers your new building's maintenance.
Carpet vs built-up converter
Convert between carpet, built-up, super built-up and RERA carpet — in sq.ft and sq.m.
Eligibility checker
Conveyance, disputes, road width, age — is your society ready, and which scheme?
Risk checker
Score the legal, plot and developer red flags in an offer — and how to fix each.
Tender generator
Answer guided questions and get a professional tender draft for your PMC.
DCPR 2034 search
Search Mumbai's building regulations by keyword, in plain language.
Developer track record
RERA projects, delivery history, delays and complaints — by builder name.
Redevelopment timeline
Every stage from feasibility to possession, on one interactive map.
Decision dashboard
Track member consents, meetings and milestones in one private place.
Document vault
A secure home for every redevelopment paper your society collects.
AI assistant
Ask DCPR and redevelopment questions in English or Marathi, any time.
Capital gains tax calculator
Property sale tax after Budget 2024 — 12.5% vs 20% with indexation, done both ways. By a CA.
TDS on property purchase
The buyer's 1% under Section 194-IA — right base, ₹50 lakh rule, NRI rates, deadlines.
Stamp duty 80C calculator
Recover tax on stamp duty & registration — your eligible deduction and actual saving.
Want early access to every tool?
Register your society — it's free — and we'll notify you the day each calculator goes live.