# Office Construction Cost Planning: Portlaoise, Ireland

> Portlaoise office cost planning using the World Bank ICP 2021 national construction price-level index of 152.8, plus a GeoNames-based local comparable-search shortlist.

- Canonical: https://harth.build/resources/construction-costs/office-construction-cost-portlaoise-ie/
- 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/IRL/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 IE dump](https://download.geonames.org/export/dump/IE.zip) (CC BY 4.0 snapshot 2026-08-26, GeoNames ID 2962026). The PLI is not a city cost/m² rate, current escalation series or tender estimate.

## Key facts

| Fact | Value |
| --- | --- |
| National construction PLI | 152.8 (World Bank ICP 2021; World = 100) |
| Screening ratio to world | 1.528 (dimensionless PLI ÷ 100; not a city location factor) |
| Locality reference | 53.0344, -7.2998 (GeoNames ID 2962026) |
| Snapshot population | 23,494 (18 of 50 listed Ireland places) |
| Nearest listed peer | Tullamore · 29 km (great-circle distance between GeoNames reference points) |
| Estimate currency | EUR (obtain a current local rate and named base date) |

## Direct answer

For early office construction cost planning in Portlaoise, the World Bank ICP reports a 2021 Ireland construction price-level index of 152.8, with the world equal to 100. This is a national comparison—not a Portlaoise EUR/m² rate or tender estimate—so replace it with current local evidence before budgeting or procurement. The observation covers construction across Ireland in 2021; it does not measure a Portlaoise market basket or current office tenders. GeoNames 2962026 records the locality at 53.0344, -7.2998, with snapshot population 23,494. That ranks Portlaoise 18 of 50 listed places, while Tullamore is the nearest listed peer at about 29 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 152.8 construction index mean?

The World Bank ICP 2021 construction PLI for **Ireland is 152.8**, 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 office work in Portlaoise costs 1.528 times a current world rate.

## Which Portlaoise inputs are known?

The reproducible locality point is **53.0344, -7.2998** (GeoNames 2962026). Its snapshot population is **23,494**, ranked 18 of 50 listed places; GeoNames classifies it as a second-order administrative seat in administrative area L. These facts shape the local comparable search, not the price.

## What must a project estimate add?

For a Portlaoise office project, reconcile workplace fit-out grade, services density, floorplate efficiency and vertical transport. Use a consistent gross-floor-area basis and record the following before reliance.

| Estimate field | Screening record | Project requirement |
| --- | --- | --- |
| National context | ICP 2021 PLI 152.8 | Retain only as dated cross-country context |
| Local EUR/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 |

## Portlaoise 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 Portlaoise | Snapshot population | Admin area |
| --- | ---: | ---: | --- |
| Tullamore | 29 | 15,598 | L |
| Carlow | 33 | 27,351 | L |
| Droichead Nua | 37 | 22,742 | L |
| Kilkenny | 42 | 21,589 | L |
| Naas | 47 | 20,713 | L |
| Athlone | 61 | 22,869 | L |
| An Muileann gCearr | 55 | 22,667 | L |
| Letterkenny | 215 | 22,549 | U |

## Price-level normalization worksheet

For a validated reference rate **R** from a country with construction PLI **P**, the transparent screening calculation is **R × (152.8 ÷ P)**. At P = 100 the dimensionless ratio is 1.528; 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 | 152.8 (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 Portlaoise 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)
- [House Construction Cost Planning: Portlaoise, Ireland](https://harth.build/resources/construction-costs/house-construction-cost-portlaoise-ie.md)
- [School Construction Cost Planning: Portlaoise, Ireland](https://harth.build/resources/construction-costs/school-construction-cost-portlaoise-ie.md)
- [Retail Construction Cost Planning: Portlaoise, Ireland](https://harth.build/resources/construction-costs/retail-construction-cost-portlaoise-ie.md)
- [Office Construction Cost Planning: Tullamore, Ireland](https://harth.build/resources/construction-costs/office-construction-cost-tullamore-ie.md)
- [All construction costs guidance for Ireland](https://harth.build/resources/construction-costs/ireland.md)
- [Climate Design Data: Portlaoise, Ireland](https://harth.build/resources/climate-data/climate-design-data-portlaoise-ie.md)
- [Daylight & Orientation: Portlaoise, Ireland](https://harth.build/resources/solar-data/daylight-orientation-portlaoise-ie.md)
- [Solar Altitude & Azimuth: Portlaoise, Ireland](https://harth.build/resources/solar-data/solar-altitude-azimuth-portlaoise-ie.md)
- [Solar Shading Design: Portlaoise, Ireland](https://harth.build/resources/solar-data/solar-shading-design-portlaoise-ie.md)

## Sources and method

National screening observation from the [World Bank ICP 2021 API](https://api.worldbank.org/v2/sources/90/country/IRL/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 IE dump](https://download.geonames.org/export/dump/IE.zip) (CC BY 4.0 snapshot 2026-08-26, GeoNames ID 2962026). 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/IRL/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/IE.zip)

## Frequently asked questions

### Does the 152.8 index give a office cost per m² for Portlaoise?

No. 152.8 is the World Bank ICP 2021 national construction price-level index for Ireland, with the world equal to 100. It is a cross-country screening statistic, not a Portlaoise EUR/m² rate, escalation index, quote or tender estimate.

### How should a Portlaoise office estimate replace this screening benchmark?

Collect current Portlaoise comparables on a consistent gross-floor-area basis, reconcile workplace fit-out grade, services density, floorplate efficiency and vertical transport, 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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