Building Bye-laws Compliance

Plot + roads → setbacks • FAR • height • sanction fee

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About Building Bye-laws Compliance

Quick start

Building Bye-laws Compliance

Pre-check a G+2 house on a 12 × 18 m plot in Bihar that faces a 9.1 m road, with an 80 m² floor plate and 3 m storeys.

On New building, set State / authority to Bihar.
In the card headed Plot — 4 sides, type Length (m) as 12, 18, 12 and 18 for Side A→B to Side D→A. Set the sides to face N, E, S and W.
On Side A→B only, type Road width (m) 9.1. Leave the other road widths blank.
Under Close the shape, keep Diagonal A→C (m) at 21.63, the diagonal of a 12 × 18 m rectangle.
Under Proposed building, keep the plotted-residential Occupancy. Type Built-up area per floor (m²) 80, clear Tell me the maximum floors, then set Floors to 3 and Floor height (m) to 3.
Select Check compliance. While Live is ticked, the plan also redraws as you type.

Read the result

Under What this plot allows, Setbacks required reads 1.8 / 1.5 / 0.75 m (front / rear / side), and the verdict is COMPLIANT (pre-check) with a FAR of 240 ÷ 216 ≈ 1.11 against a FAR limit of 2.5. Under By-law 35, setbacks grow with plot depth, plot width and building height (this building is 9 m tall), and FAR, the total built-up area ÷ plot area, must not exceed the limit.

Codes

Bihar (gazette-verified); Jharkhand, Uttar Pradesh and Delhi (draft — verify against gazette). See Bye-laws jurisdictions.

Limits

A pre-check, not a sanction. UP excludes NOIDA, Greater NOIDA and YEIDA.

Full guide How-to guides Glossary

State / authoritygazette-verified

Bihar Building Bye-laws 2014, as amended 2022 and by UDHD Notification 10713 (04-10-2025) — Urban Development & Housing Department, Government of Bihar

Plot — 4 sides

Bearings & site

Side A→B

Length (m)Bearing (°)Road width (m)

Constraint

Side B→C

Length (m)Bearing (°)Road width (m)

Constraint

Side C→D

Length (m)Bearing (°)Road width (m)

Constraint

Side D→A

Length (m)Bearing (°)Road width (m)

Constraint

Close the shape

Four sides on their own can still hinge into plots of quite different sizes. One more figure fixes it — give whichever you have.

Diagonal A→C (m)The best answer, if the plot was surveyed.

Proposed building

OccupancyBuilt-up area per floor (m²)One floor's plate. It is capped by the buildable envelope — beyond that it is not a bigger building, it is one standing on its own setback.Tell me the maximum floorsOn: the bye-laws decide the storey count and every check runs against that building. Off: set it yourself.

Floor height (m)Dwelling units (optional)Service area (m², optional)Comes off the built-up area before parking is computed, up to 15% of it (Table 19 note). Blank deducts nothing.Blocks on the plotTwo or more and By-law 37(1) sets how far apart they stand.Area typeTown populationULB (FAR ceiling)ULB class— sets the fee ratesLand-use zone— from the master planSaleable efficiency (%)Yours, not the bye-law's. 75% suits a plotted house; a tower with two lifts and a fire stair runs nearer 65%.

FAR-free elements (By-law 38(10))

Stilt parking — free of FAR, but costs 2.4 m of heightService floor — free of FAR, costs 2.0 m of heightBasement — free of FAR and height, but billedClaim narrow-plot relief (By-law 37(7))

Where the plot sits — height caps that ignore the road

An approach funnel of the airport, a protected monument, or the 200 m ring around the Governor's House, Secretariat, Legislative Assembly or High Court will cap this building's height whatever its road width and FAR allow. Leave a box empty if the plot is nowhere near that feature.

Nearest runway end (m)

Table 17 — under 360 m, nothing may be built at all

Airport boundary (m)

Table 18 — the transitional area

Protected monument (m)

By-law 20 — nothing within 100 m; within 300 m, 7 m and no floor above the first

Governor's House / Secretariat / Assembly / High Court (m)

By-law 21 — nothing above 10 m within 200 m

Compare with other occupancies

Residential (apartments / group housing)Commercial / mercantileOffice / businessInstitutional / educationalMedical / hospitalIndustrialStorage / warehouseAssembly (cinema / marriage hall)Mixed use

Claims & exclusionsFAR-free areas · industrial siting · green rating

Balcony area (m²)Half of it is free of FAR — By-law 38(10)(G), not all of it.Ancillary services (m²)Substation, pump house, shafts, water tank, society room (≤20 m²), watchman booth (≤3 m²), stair and lift rooms above the top storey — By-law 38(10)(D)/(F), free in full.Green ratingTable 18 (2025). Pre-certified at application, confirmed at occupancy.Industrial sitingNotification 10713 (2025) writes three separate regimes.Flatted factorySide setback on both sides38(6)(a) case ii. One side only takes the lower FAR.

Enter the plot and the building, then run the check. You’ll get the required setbacks, a drawn buildable envelope, clause-cited pass/fail checks, what the plot allows at maximum, and the sanction fee.

Setback plannorth up — as you declared the sides

Live

Enter the plot sides and the road width — the plan draws itself and redraws as you type.

Bihar Building Bye-laws2014, amended 2025gazette-verified

Free account — no card required