# House Construction Cost Planning: Patna, India

> Patna house cost planning using the World Bank ICP 2021 national construction price-level index of 37.7, plus a GeoNames-based local comparable-search shortlist.

- Canonical: https://harth.build/resources/construction-costs/house-construction-cost-patna-in/
- Last updated: 2026-09-15
- Data source: National screening observation from the [World Bank ICP 2021 API](https://api.worldbank.org/v2/sources/90/country/IND/classification/PX.WL/series/1501200/time/YR2021/data?format=json) and [ICP data documentation](https://www.worldbank.org/en/programs/icp/data); locality and population from the [GeoNames IN dump](https://download.geonames.org/export/dump/IN.zip) (CC BY 4.0 snapshot 2026-08-26, GeoNames ID 1260086). The PLI is not a city cost/m² rate, current escalation series or tender estimate.

## Key facts

| Fact | Value |
| --- | --- |
| National construction PLI | 37.7 (World Bank ICP 2021; World = 100) |
| Screening ratio to world | 0.377 (dimensionless PLI ÷ 100; not a city location factor) |
| Locality reference | 25.5941, 85.1356 (GeoNames ID 1260086) |
| Snapshot population | 1,684,297 (22 of 50 listed India places) |
| Nearest listed peer | Varanasi · 216 km (great-circle distance between GeoNames reference points) |
| Estimate currency | INR (obtain a current local rate and named base date) |

## Direct answer

For early house construction cost planning in Patna, the World Bank ICP reports a 2021 India construction price-level index of 37.7, with the world equal to 100. This is a national comparison—not a Patna INR/m² rate or tender estimate—so replace it with current local evidence before budgeting or procurement. The observation covers construction across India in 2021; it does not measure a Patna market basket or current house tenders. GeoNames 1260086 records the locality at 25.5941, 85.1356, with snapshot population 1,684,297. That ranks Patna 22 of 50 listed places, while Varanasi is the nearest listed peer at about 216 km. Use these facts only to plan the comparable search. Obtain current local rates on a consistent area basis, then reconcile scope, taxes, fees, contingency and escalation. Retain the source, base date and reviewer when local evidence replaces the screening ratio.

*Content and cited inputs reviewed by [Scott Barrington](https://nz.linkedin.com/in/barrington), Harth founder and architectural technology specialist · Published 2026-08-26 · Updated 2026-09-15.*

## What does the 37.7 construction index mean?

The World Bank ICP 2021 construction PLI for **India is 37.7**, compared with a world benchmark of 100. It is a national spatial price comparison assembled for the 2021 reference year. It does not say that house work in Patna costs 0.377 times a current world rate.

## Which Patna inputs are known?

The reproducible locality point is **25.5941, 85.1356** (GeoNames 1260086). Its snapshot population is **1,684,297**, ranked 22 of 50 listed places; GeoNames classifies it as a first-order administrative seat in administrative area 34. These facts shape the local comparable search, not the price.

## What must a project estimate add?

For a Patna house project, reconcile dwelling size, structural system, envelope specification, kitchens and bathrooms. Use a consistent gross-floor-area basis and record the following before reliance.

| Estimate field | Screening record | Project requirement |
| --- | --- | --- |
| National context | ICP 2021 PLI 37.7 | Retain only as dated cross-country context |
| Local INR/m² rate | Not supplied | Current comparable with named source and base date |
| Area and scope | Gross floor area; scope unresolved | Measurement standard, specification and procurement route |
| Additions | Not supplied | Taxes, fees, site work, contingency and escalation |
| Review | Automated source and arithmetic QA | Qualified local cost review |

## Patna comparable-location search screen

This shortlist is computed from the checked GeoNames snapshot. Distance and population help prioritize where to request comparables; neither is used as a cost multiplier.

| Listed place | Great-circle km from Patna | Snapshot population | Admin area |
| --- | ---: | ---: | --- |
| Varanasi | 216 | 1,164,404 | 36 |
| Dhanbad | 239 | 1,196,214 | 38 |
| Ranchi | 251 | 1,120,374 | 38 |
| Jamshedpur | 328 | 1,339,438 | 38 |
| Prayagraj | 331 | 1,073,438 | 36 |
| Kallakurichi | 1,672 | 1,682,687 | 25 |
| Pimpri-Chinchwad | 1,400 | 1,727,692 | 16 |
| Rasapūdipalem | 894 | 1,728,128 | 02 |

## Price-level normalization worksheet

For a validated reference rate **R** from a country with construction PLI **P**, the transparent screening calculation is **R × (37.7 ÷ P)**. At P = 100 the dimensionless ratio is 0.377; no world cost rate is asserted. Keep the reference rate's currency, base date, area basis and scope attached.

| Input | Recorded value | Release condition |
| --- | --- | --- |
| Target national PLI | 37.7 (World = 100, 2021) | Screening context only |
| Reference construction PLI P | User-supplied from the same ICP classification/year | Must match reference rate country |
| Validated reference rate R | User-supplied | Named source, currency, date, area and scope |
| Local Patna adjustment | Not asserted | Replace with current local comparable evidence |
| Result status | Screening normalization | Not a budget, quote or tender estimate |

## Where can you explore related guidance?

- [Explore all construction costs guidance](https://harth.build/resources/construction-costs.md)
- [Office Construction Cost Planning: Patna, India](https://harth.build/resources/construction-costs/office-construction-cost-patna-in.md)
- [School Construction Cost Planning: Patna, India](https://harth.build/resources/construction-costs/school-construction-cost-patna-in.md)
- [Retail Construction Cost Planning: Patna, India](https://harth.build/resources/construction-costs/retail-construction-cost-patna-in.md)
- [House Construction Cost Planning: Varanasi, India](https://harth.build/resources/construction-costs/house-construction-cost-varanasi-in.md)
- [All construction costs guidance for India](https://harth.build/resources/construction-costs/india.md)
- [Climate Design Data: Patna, India](https://harth.build/resources/climate-data/climate-design-data-patna-in.md)
- [Daylight & Orientation: Patna, India](https://harth.build/resources/solar-data/daylight-orientation-patna-in.md)
- [Solar Altitude & Azimuth: Patna, India](https://harth.build/resources/solar-data/solar-altitude-azimuth-patna-in.md)
- [Solar Shading Design: Patna, India](https://harth.build/resources/solar-data/solar-shading-design-patna-in.md)

## Sources and method

National screening observation from the [World Bank ICP 2021 API](https://api.worldbank.org/v2/sources/90/country/IND/classification/PX.WL/series/1501200/time/YR2021/data?format=json) and [ICP data documentation](https://www.worldbank.org/en/programs/icp/data); locality and population from the [GeoNames IN dump](https://download.geonames.org/export/dump/IN.zip) (CC BY 4.0 snapshot 2026-08-26, GeoNames ID 1260086). The PLI is not a city cost/m² rate, current escalation series or tender estimate.

### Source links

- [api.worldbank.org](https://api.worldbank.org/v2/sources/90/country/IND/classification/PX.WL/series/1501200/time/YR2021/data?format=json)

- [worldbank.org](https://www.worldbank.org/en/programs/icp/data)

- [download.geonames.org](https://download.geonames.org/export/dump/IN.zip)

## Frequently asked questions

### Does the 37.7 index give a house cost per m² for Patna?

No. 37.7 is the World Bank ICP 2021 national construction price-level index for India, with the world equal to 100. It is a cross-country screening statistic, not a Patna INR/m² rate, escalation index, quote or tender estimate.

### How should a Patna house estimate replace this screening benchmark?

Collect current Patna comparables on a consistent gross-floor-area basis, reconcile dwelling size, structural system, envelope specification, kitchens and bathrooms, and state base date, currency, taxes, fees, site work, contingency and escalation. A qualified local cost professional should review the resulting project estimate.

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