barnconversioncost.co.uk

Cotswolds barn conversion cost

Build-cost bands are the site's own indicative model, inflated to a Q2 2026 footing via the ONS Construction Output Price Index (April 2026). Class Q rules current to the 21 May 2024 GPDO amendment.

Cotswolds barn conversion lands at £2,580-£3,120/m² mid spec, including the AONB design premium (~18% over our national stone band). Class Q is closed; full planning is the only route.

£/m² band

Applying the 1.18 Cotswolds AONB multiplier to our indicative stone band (£2,180-£2,640/m², Q2 2026) gives £2,572-£3,115/m². A 200 m² mid-spec Cotswolds conversion lands at roughly £585,000-£760,000 all-in before VAT431C reclaim.

Cotswold stone repointing and re-roof

Cotswold stone repointing
£75-£130 / m² elevation
Stone-slate roof
£260-£380 / m² roof
Salvaged Cotswold stone (repairs)
£190-£320 / m² walling

Refusal patterns

Class Q is unavailable in the AONB. Full planning casework focuses on landscape impact, external materials and openings. Refusals cluster around proposed new fenestration in elevations visible from public rights of way.

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Reviewed for build by O. Wakefield-Smith, Digital Signet research, Q2 2026. A chartered surveyor (RICS MRICS) sign-off is being procured for the live site. Statutory and tax figures bracket their published ONS, gov.uk or HMRC source on the page where they appear; the £/m² build-cost bands are the site's own indicative model, not a published dataset.