Builder stages for your new build project
Please note that these are rough guides only. To get a clear cost breakdown of each stage for your new build project, please post your project and get up to 5 free quotes
New Build Home Construction
Once your planning approvals, technical drawings, and specifications are complete, your builder takes charge on-site — transforming your approved plans into a high-quality new home that’s safe, efficient, and built to specification.
Pre-Start & Mobilisation
Plan, schedule, and prepare your site for construction
Groundworks & Foundations
Prepare the site and form the building’s base
Structure & Shell Construction
Raise the walls, floors, and roof structure
Weatherproofing (Watertight Stage)
Seal the building envelope
First Fix Services & Internal Structure
Install hidden services and form internal spaces
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Builder step-by-step cost guide for your new build project.
(Please note that these are rough guides only; to get a clear cost breakdown of each stage, please post your project and get up to 5 free quotes.)
Builder Cost Breakdown – Typical New Build Home Project
All figures are rough guides only and vary by design complexity, location, and specification. Based on 2025 averages, excluding VAT.
Typical overall cost: £2,000 – £3,500+ per m²
Example: 180 m² new build house ≈ £360,000 – £630,000
Pre-Start, Site Setup & Ground Preparation
3–6%
Approx. cost: £10,000 – £30,000
Groundworks, Foundations & Drainage
10–15%
Approx. cost: £40,000 – £90,000
Superstructure & Structural Frame
20–25%
Approx. cost: £80,000 – £150,000+
Roofing, Windows & External Finishes
10–15%
Approx. cost: £40,000 – £90,000
First Fix Services
8–12%
Approx. cost: £30,000 – £60,000
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