Building a house extension in Andover is a significant investment, with costs varying considerably based on the type of extension, materials, site conditions and local market rates. As a South East location with strong property demand, Andover's extension costs are approximately 15-25% above the national average. BizHub365 connects Andover homeowners with vetted local extension builders who provide transparent quotes and quality workmanship for residential extensions of all sizes.
Extension Builder Prices in Andover
| Service | Typical Cost | Unit |
|---|---|---|
| Single-storey extension (3m x 4m) | £18000 – £28000 | per job |
| Single-storey extension (4m x 5m) | £28000 – £42000 | per job |
| Two-storey extension (3m x 4m) | £45000 – £68000 | per job |
| Two-storey extension (4m x 5m) | £65000 – £95000 | per job |
| Brick and block construction | £1200 – £1600 | per m² |
| Structural engineer survey and design | £600 – £1200 | per job |
| Building regulation approval | £400 – £700 | per job |
Prices are indicative averages for Andover. Actual quotes will vary based on job specifics.
What Affects the Cost?
Extension costs in Andover are driven by several key factors: the size and height of the extension (single vs two-storey significantly impacts labour and materials); ground conditions and site accessibility; the quality of finishes and materials chosen; proximity to existing utilities and services; planning requirements and building regulation compliance; and the complexity of connecting the extension to your existing home's structure. Extensions in conservation areas or with listed building connections may incur additional costs. Local labour rates and supply availability in Andover also influence overall project pricing.
Money-Saving Tips
Get quotes from at least three local builders to compare pricing and specifications. Plan extensions during the quieter winter months (November–February) when builders may offer more competitive rates. Consider standardised designs rather than complex architectural features, use standard materials where possible, and obtain all required planning and building regulation approvals before work begins to avoid costly delays and rework.
Frequently Asked Questions
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