Single Storey Extension Costs

Single Storey Extension Costs Table

The scope of a single storey extension project can vary depending on a number of things, for example, is the project a garage extension, porch, or similar minor work extension; or is it a full-scale extension?

While we can’t cover every scenario here, the table below gives you a good idea of what you can expect in terms of costs involved for a single storey extension project in London.

You can contact us for a fast, free, and no-obligation quote.

Cost of Single Storey Extensions in London

The cost of single storey extensions usually average around £1100/sqm.

Site survey: from £400
Planning: from £1200
Construction from £65K
Cost/m² about £1100m²

Site Survey

We conduct a full site survey with accurate measurements and photographs, enabling us to prepare scaled drawings for planning applications and documentation for your proposal.

Site Survey: from £400


We assess the history/context of the site and surroundings, research the local planning authority and establish previously proposed planning applications, either accepted or refused.

Planning: from £1200


We offer a wide range of project development and management services during the construction phase, including project and development management.

Construction from £65K
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