Building rule calculators
Single answer calculators from the Tamil Nadu building rules: setbacks, OSR, EWS reservation, passage width, development type and the rest, for the figures you give.
What we need
One thing at a time. Fill it in and press Run.
The answer
From the register, with its date and source.
Nothing run yet. The answer appears here with everything this mini adds:
- Thirteen rules, one form
- The rule cited with the figure
- Free
How this works
What it reads, what it needs, and how to read the answer.
The building rules are arithmetic once you know the inputs. This mini runs one rule at a time.
The rule and the figures it needs; unused fields can stay empty.
1Which rule2Plot area in sq.m3Total area in sq.m4Built up area in sq.m5Road width in metres6Frontage in metres7Floors8Height in metres9Housing units10Plots served11Passage length in metres12Street length in metres13Abuts a national or state highway14Local body15Use- Thirteen rules, one form
- The rule cited with the figure
- Free
Run it as often as you need. Nothing is deducted.
The figure and the rule it comes from.
The Tamil Nadu Combined Development and Building Rules 2019.
Questions people ask
Short answers, no jargon.
Which fields matter?
Setback needs road width, frontage and floors; OSR needs the plot area; the answer says what it used.
Still unsure? Ask LandLens One, it can reason about this parcel with you.
Explore the LandLens suite
A mini settles one question. These take the whole deal: verification, pricing, development analysis and the transaction itself.
LandLens One
Ask anything about Tamil Nadu land. Answers from the law, cited to the page, and it acts on the records.
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Twenty five years of registered prices around a parcel, the actual transaction values, not just the guideline.
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What you can build on a plot: FSI, setbacks, height limits and parking, computed from the rules that apply.
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Watch any property for new registrations, EC entries and ownership changes, and get told when they happen.
Open Property TrackerDeal Room
A secure workspace from offer to registration: documents, e-signatures and milestones in one place.
Open Deal Room