Build by the rules. Know the numbers.
Free calculators made for Bihar and Jharkhand, built on the actual state building byelaws, official fee schedules and today's local rates. In English and हिन्दी.
Start here
House construction cost
Cost range with FAR and setback checks, GST, approval fee and build time.
Open → Jharkhand · RanchiHouse construction cost
The same estimate under the Jharkhand Building Byelaws.
Open → BiharByelaws: FAR, setbacks, height
How many floors and how much area your road and plot allow.
Open → JharkhandByelaws: FAR, coverage, setbacks
Including urban-body caps and the small-plot route.
Open → Both statesParking requirement
Car spaces you must provide, and how many fit on a stilt or basement.
Open → New · Both statesFloor plan analyzer
Score your naksha: room sizes against the byelaws, light and air, fit on the plot, Vastu and cost.
Open → Both statesMaterials: cement, steel, sand
Quantities and cost at Patna and Ranchi prices.
Open → Low-lying plotsPlot filling (mitti bharai)
Soil volume, trolley loads and cost to raise your plot.
Open → Site workBoundary wall
Length, bricks and cost with gate.
Open → SafetySeismic zone by district
Earthquake zone for every district, and what it means.
Open → ApprovalsPlan approval fee
Patna Municipal Corporation and Jharkhand fees, plus labour cess.
Open → FinanceLoan EMI + PMAY subsidy
Monthly EMI, interest and PMAY-U 2.0 eligibility.
Open →Why these calculators are different
- Based on the law, not guesswork. Every byelaw number comes from the Bihar Building Byelaws 2014 (with the October 2025 FAR notification) or the Jharkhand Building Byelaws 2016, and the table is cited next to the result.
- Honest about uncertainty. Costs are shown as ranges. Reported but unconfirmed amendments are labelled as such. Field rates are marked as estimates.
- Local. Patna and Ranchi material prices, Bihar and Jharkhand minimum wages, district seismic zones, the monsoon sand-mining ban, and Patna airport height zones.
- Private. Calculations run in your browser. Nothing is stored unless you ask for a call back.
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