House Construction Cost in Patna 2027: Rates & Breakdown

Building a house in Patna costs about ₹1,600–1,700 per sq ft for economy work, ₹1,800–2,100 for standard work and ₹2,200–2,700 or more for premium work. These are market ranges for turnkey construction, per sq ft of built-up area, at October 2026 rates. A typical 30×40 ft plot with a G+1 house on a 20 ft road comes to about ₹41.5 lakh at a standard (Classic) specification. That includes GST, the roof stair cabin and parapet, and the 1% labour cess. It does not include a boundary wall, plot filling, a septic tank or a borewell.

Below we work through that house line by line, the way our house construction cost calculator for Bihar does it. Put in your own plot there to get your exact number.

Three kinds of numbers, and why people mix them up

Keep these three apart:

Type of number	Patna figure	What it covers
BuildonClick package price	Budget ₹1,795 · Classic ₹2,045 · Premium ₹2,445 per sq ft	Turnkey construction with listed brands and allowances, 18% GST included, per sq ft of built-up area
General market range	₹1,600–1,700 economy · ₹1,800–2,100 standard · ₹2,200–2,700+ premium per sq ft	What turnkey builders in Patna typically quote. Whether GST and brands are included varies by quote.
Extras	Lump sums or per running foot (see below)	Boundary wall, plot filling, septic tank, borewell, approval fee, lift. Not in any per sq ft rate.

When two quotes differ, first check GST and the brands and tile allowances each assumes. Our package comparison lists every brand.

Worked example: 30×40 plot, G+1, Patna city

A 30 ft wide, 40 ft deep plot (1,200 sq ft) on a 20 ft road in a newly developed part of Patna: ground + first floor, Classic package, open parking in front.

Step 1: How much can you build?

The road width decides the limits. Under the Bihar Building Byelaws 2014 (Table 15, as amended in October 2025), a 20 ft (6.1 m) road gives a residential FAR of 2.0. That means you can build up to 2 × 1,200 = 2,400 sq ft in total.

Setbacks then shrink the footprint. For a plot under 15 m deep and a house under 10 m tall, the byelaws (Tables 8 and 9) ask for 1.5 m in front and 1.2 m at the rear. A plot under 10 m wide needs no side setback. That leaves about 930 sq ft per floor. Two floors give 1,860 sq ft, inside the 2,400 sq ft limit.

A full third floor would make 2,790 sq ft, a FAR of about 2.34, which this road does not allow. G+2 is possible only with each floor kept to about 800 sq ft.

Step 2: Price the floors

Patna city is the base location and a two-storey house takes the base rate, so the Classic rate stays at ₹2,045 per sq ft.

Step 3: Add the roof items and the cess

The roof stair cabin (mumty, priced as 150 sq ft) and the parapet are added by item. The Building and Other Construction Workers Welfare Cess Act, 1996 then adds 1% of the construction cost.

Item	Working	Amount
2 floors × 930 sq ft	1,860 sq ft × ₹2,045	₹38,03,700
Roof: stair cabin + parapet	By item	₹2,87,700
Labour welfare cess	1% of the above	₹40,914
Most likely total		₹41,32,314
Of which GST (18%, already inside the rate)	Total × 18 ÷ 118	about ₹6.3 lakh

The calculator then shows a range: 5% below to 10% above for homes, because soil, design and market prices move. It rounds to the nearest half lakh, so this house shows as ₹39.5–45.5 lakh, most likely ₹41.5 lakh, with a build time of 8–11 months.

The same house in all three packages

Package	Rate (incl. GST)	Range shown	Most likely
Budget	₹1,795/sq ft	₹34.5–40 lakh	₹36.5 lakh
Classic	₹2,045/sq ft	₹39.5–45.5 lakh	₹41.5 lakh
Premium	₹2,445/sq ft	₹47–54 lakh	₹49.5 lakh

The packages differ in brands of steel and cement, tile and fitting allowances, and doors. In all three, the RCC follows the structural designer's drawings.

What moves the rate per sq ft

Number of floors

Two and three floors take the base rate. A single storey is about 10% higher per sq ft, because the foundation and roof are shared by less floor area. Four floors add 3%, five add 6%, and six add 8%, for the extra structure and the work at height.

Town

Steel and cement cost about the same across Bihar. Labour and local materials, roughly 60% of the cost, change from town to town. Here is the Classic rate for a G+1 house after that adjustment, and what our 30×40 example would come to:

Location	Seismic zone	Classic rate	30×40 G+1, most likely
Patna city	IV	₹2,045	₹41.3 lakh
Patna outskirts (Danapur, Phulwari, Bihta, Fatuha)	IV	₹1,984	₹40.1 lakh
Muzaffarpur	IV	₹1,971	₹39.9 lakh
Bhagalpur, Purnia, Begusarai	IV	₹1,959	₹39.6 lakh
Gaya	III	₹1,940	₹39.2 lakh
Darbhanga	V	₹2,037	₹41.2 lakh
Other town in Bihar	IV	₹1,947	₹39.4 lakh

Earthquake zone

Darbhanga's labour is cheaper than Patna's, yet the total is almost the same: seismic zone V (IS 1893) needs more steel and stronger detailing, which adds about 4%. Zone III districts such as Gaya get about 1% off.

Parking and lift

A stilt parking floor is priced at about 40% of the package rate (₹818 per sq ft at Classic in Patna): it has columns and a slab but no walls or finishes. A basement is priced at 75% of the rate plus ₹300 per sq ft for dewatering and allowances, with a wider range because soil and water table vary. A residential basement in Bihar needs a plot of at least 500 m². A lift adds ₹8–15 lakh, most likely about ₹11 lakh.

Extras that are not in any per sq ft rate

Extra	Rate we use	For the 30×40 example
Plot filling (if the plot is below the road)	₹30–45 per sq ft of plot, per ft of height	2 ft: about ₹89,000
Boundary wall, 5 ft, 9 inch brick, with gate	₹1,200–1,800 per running ft + gate ₹30,000–70,000	3 sides (110 ft): about ₹2.15 lakh
Septic tank + soak pit	₹70,000–1,50,000	about ₹1.1 lakh
Borewell + pump	₹70,000–1,50,000	about ₹1.1 lakh
PMC building permit fee	₹12 per m² (up to 10 m height) + ₹100	about ₹2,174
Lift	₹8–15 lakh	not needed for G+1

Add 2 ft of filling, a three-side wall, a septic tank and a borewell to our Classic house and the likely total moves from ₹41.3 lakh to about ₹46.6 lakh (range about ₹43–52.5 lakh). That is more than ₹5 lakh that many first quotes leave out. Price yours with the plot filling calculator and the boundary wall calculator.

Patna Municipal Corporation charges ₹12, ₹18 or ₹25 per m² of built-up area for buildings up to 10 m, up to 15 m and above 15 m. The 1% labour cess is worked out from CPWD plinth-area rates, so it may differ a little from 1% of your actual cost. Check both on the approval fee calculator. Architect's fees, the soil test, electricity and water connections, and interiors beyond the package are also separate.

Where the money goes, stage by stage

For the Classic example, here is how the ₹40.9 lakh of building work (floors plus roof items) splits across the stages of construction:

Stage	Share	Amount
Design and drawings	2.5%	₹1.02 lakh
Excavation and foundation	15%	₹6.14 lakh
Columns, beams and slabs	23%	₹9.41 lakh
Brickwork and plaster	17%	₹6.96 lakh
Flooring and tiling	10%	₹4.09 lakh
Electrical	8%	₹3.27 lakh
Plumbing and sanitary	5%	₹2.05 lakh
Doors and windows	8%	₹3.27 lakh
Painting and finishing	11.5%	₹4.71 lakh

Nearly 40% goes into the foundation and frame, the part you cannot redo later.

The material prices behind these numbers

These are the Patna rates in our model, from market surveys in October 2026:

Cement: ₹400 per 50 kg bag (market ₹370–415)
TMT steel: ₹60 per kg (market ₹57–64)
Sand: ₹75 per cft · Gitti (aggregate): ₹55 per cft · Red brick: ₹6.5 each
Mason (raj mistri): ₹875 per day · Helper: ₹520 per day (Bihar minimum wage: ₹436 unskilled, ₹551 skilled)

For the 1,860 sq ft example, the thumb rules give about 837 bags of cement, 7.44 tonnes of steel, 3,720 cft of sand and 3,534 cft of gitti. Our construction material calculator lets you put in your dealer's prices.

One seasonal warning: river sand mining in Bihar stops every year from 15 June to 15 October, and sand prices usually rise in that period. If you can, plan the foundation and slabs around it.

To get your own number, measure the full road width between boundary walls (not just the paved part), enter it with your plot size, town and floors in the cost calculator, and add the extras you need. Use the most likely figure for your budget and the high figure for your loan.

Questions people ask

What is the construction cost per sq ft in Patna for 2027?

At October 2026 rates, turnkey construction in Patna typically costs ₹1,600–1,700 per sq ft for economy, ₹1,800–2,100 for standard and ₹2,200–2,700 or more for premium work. BuildonClick's packages are ₹1,795, ₹2,045 and ₹2,445 per sq ft of built-up area, including GST. The calculator always uses the current rates on the site.

How much does a 30×40 G+1 house cost in Patna?

On a 20 ft road, about 930 sq ft per floor is buildable after setbacks. At the Classic package, G+1 comes to about ₹39.5–45.5 lakh, most likely ₹41.5 lakh, including the roof cabin, parapet, GST and labour cess. Boundary wall, filling, septic tank and borewell are extra.

Is GST included in the per sq ft rate?

In BuildonClick's package prices, yes: 18% GST on the works contract is included. In our 30×40 Classic example, about ₹6.3 lakh of the ₹41.3 lakh total is GST. Many market quotes are given without GST, so always ask.