For complete residential construction based on a standard specification and normal site conditions.
View New Builds & Extensions →Build Costs & Pricing.
Clear indicative starting costs for residential construction across Kent and the South East, with every project priced to its own scope, specification and site conditions.
A Useful Starting Point.
The figures below are intended to help you understand the likely starting level of investment before a project-specific estimate is prepared.
They are not fixed quotations. Final costs depend on design, specification, structure, access, ground conditions and the level of finish required.
Guide rates exclude VAT where applicable. They are starting points for discussion, not a fixed price or a quotation for your project.
For single or double-storey extensions with a clearly defined scope and conventional construction.
View Extension Services →Refurbishment costs vary significantly with the existing building, structural work, services and required finish.
View Refurbishment Services →Normal Site Conditions & A Defined Specification.
The guide rates are based on a straightforward residential project with reasonable access, conventional construction and an agreed standard specification.
Typically Included
- Groundworks and standard foundations
- Structure, brickwork and roofing
- Windows and external doors to the agreed specification
- First and second fix carpentry
- Plumbing, heating and electrical installation
- Plastering, decoration and standard internal finishes
- Site management and coordination of the construction works
Typically Excluded
- Land purchase and finance costs
- Architect, engineer, surveys and other professional fees
- Planning, Building Regulations and other statutory charges
- Abnormal ground conditions, piling or unusually deep foundations
- Major utility upgrades, new service connections or treatment plants
- Driveways, extensive landscaping, boundary works and major external works
- Premium kitchens, bathrooms, specialist glazing and bespoke finishes above the agreed allowance
- VAT where applicable
40m² Extension.
At the indicative starting rate of £2,250/m², a 40m² extension would start from approximately:
This is an illustration only and is before any project-specific exclusions, upgrades or VAT where applicable.
Confirm The Scope Before Comparing Prices
Ask for the floor area used in the estimate, together with the allowances for kitchens, sanitaryware, flooring and finishes. These are agreed for each project; there is no single kitchen or bathroom allowance specified in this guide.
Why The Final Price Can Move
Large areas of glazing, structural steel, complex roofs, restricted access, high-end kitchens and bathrooms, significant service alterations or difficult ground conditions can all change the cost materially.
The most useful next step is a short discussion about the site, drawings and intended finish so the budget can be tested against the actual project.