Build Cost in Roscommon 2026 — Per m² Figures & Example Estimate

Building a house in Roscommon in 2026 costs around €273,000–€294,000 for the construction of a typical 145 m² mid-range two-storey home, before fees and VAT. Roscommon sits at a 0.82 multiplier — 18% below the Dublin baseline — and offers what might be the most uncomplicated version of the lowest national pricing tier. No coastal delivery premium, no mica risk, no drumlin terrain surprises, no commuter demand. Flat terrain, straightforward logistics via the N61 and N60, and a county development plan that actively supports rural one-off housing. Add fees, VAT at 13.5%, and a 10% contingency, and the same build comes in at roughly €407,000–€410,000 all-in on a serviced site.

Among the 0.82 tier counties — Donegal, Mayo, Sligo, Leitrim, Roscommon, Longford — Roscommon has the clearest claim to delivering its multiplier without footnotes. No mica considerations, no Atlantic peninsula delivery complexity, no border-county sterling dynamics. What you see in the figures is what you get on a standard site. A free first estimate from BeforeYouBuild can confirm your specific project.

What drives Roscommon-specific costs

The absence of demand pressure is Roscommon's defining cost characteristic. There is no IDA industrial presence competing for mechanical and electrical trades, no commuter belt pulling subcontractor rates toward Dublin levels, and no tourist economy creating seasonal availability pressure. Roscommon town and Castlerea have small but competitive contractor markets that price residential work honestly. The N61 and N60 give reliable delivery access from Athlone and Galway supply depots, and haulage costs are standard Midlands rates.

East Roscommon — Athleague, Fuerty, Knockcroghery — sits within the Athlone supply catchment and shares some of Westmeath's logistics advantage, with straightforward road access to the midland materials network. Boyle in the north benefits from proximity to Sligo town's contractor base for larger sub-packages. Roscommon county development plan policy is one of the more welcoming in Connacht for rural one-off housing — the planning authority applies the standard rural housing need tests without the additional scenic and coastal sensitivity that complicates applications in Mayo or Sligo. Lake Ree shoreline and callows areas require standard environmental sensitivity, but these are not large parts of the county.

Worked example: 145 m² mid-range 2-storey new build

Roscommon regional multiplier applied to the national mid-range rate: 0.82 × €2,300 = **€1,886 per m²** effective construction rate. Two-storey uplift of approximately 7.6% is reflected in the high end of the example range shown in the summary card above.

Construction cost

Base construction at 145 m² × €1,886 per m²: **€273,470**.

The full mid-range band at Roscommon rates runs €1,722–€2,050 per m², giving a construction cost range of **€250,000–€297,000** for a 145 m² build depending on specification. The ±4% band around the worked-example midpoint — reflecting finish level, insulation standard, heating system and window specification — runs approximately **€262,000–€284,000** within a consistently mid-range spec.

Fees, VAT and admin

On top of base construction, allow around 10% for architect fees — roughly €27,000 on a €273,000 build. Structural engineer and quantity surveyor fees typically run €8,000–€9,000 combined. Planning and regulatory administration — covering the planning application fee, Disability Access Certificate, BCMS Commencement Notice, Assigned Certifier fee, site survey, ground investigation, BER assessment, and site insurance — adds around €6,000–€7,000. Utility connections (ESB standard connection, Uisce Éireann water and wastewater) add roughly €9,000–€10,000; rural sites requiring a septic tank should allow a further €10,000–€12,000.

VAT at 13.5% typically adds €38,000–€44,000 on a Roscommon mid-range build of this size. With a 10% contingency built in, a realistic all-in budget for a 145 m² mid-range two-storey in Roscommon runs **€400,000–€415,000** on a serviced site, or **€415,000–€430,000** on a rural site requiring a septic tank and longer utility runs.

How Roscommon compares with neighbouring counties

| County | Multiplier | Per m² (mid-range) | 145 m² construction | |---|---|---|---| | Dublin | 1.00 | €2,300 | €334,000 | | Roscommon | 0.82 | €1,886 | €273,000 | | Westmeath | 0.85 | €1,955 | €283,000 | | Leitrim | 0.82 | €1,886 | €273,000 |

Roscommon and Leitrim share the 0.82 multiplier. Westmeath at 0.85 is €10,000 above in base construction for a 145 m² build — a difference reflecting Athlone's deeper logistics and contractor market depth. Dublin is €61,000 above Roscommon. For buyers who want the lowest available construction cost with straightforward site conditions and no county-specific complications, Roscommon makes a strong case.

What to do next

Every site and spec lands somewhere different within the ranges on this page. A free first estimate from BeforeYouBuild puts numbers on your specific project — floor area, storey count, site type, and finish level — so you have something concrete to bring to your architect or quantity surveyor. Run the estimate at [beforeyoubuild.ie/build-cost-calculator-ireland](/build-cost-calculator-ireland).

The figures on this page are produced by the same Pricing v1 ruleset used across the calculator and the sample reports. Rates are reviewed quarterly against Irish CSO construction price indices and contractor sentiment.