Building an extension is one of the most popular home improvement investments in Stevenage, but costs vary significantly based on the type of extension, materials, ground conditions, and whether you need planning permission. Labour costs for extension builders in Stevenage typically range from £150–£250 per day, while material expenses depend heavily on your design choices. BizHub365 connects Stevenage homeowners with experienced local extension builders who can provide accurate quotes tailored to your project requirements.
Extension Builder Prices in Stevenage
| Service | Typical Cost | Unit |
|---|---|---|
| Single-storey extension (per square metre) | £1200 – £1800 | per m² |
| Two-storey extension (per square metre) | £1800 – £2600 | per m² |
| Garage conversion to living space | £8000 – £15000 | per job |
| Rear kitchen/dining extension (20-30m²) | £25000 – £40000 | per job |
| Loft conversion (basic, per m²) | £1000 – £1600 | per m² |
| Planning permission application support | £500 – £1200 | per job |
| Building regulations approval (extension) | £400 – £900 | per job |
| Structural surveys and design consultation | £300 – £700 | per job |
Prices are indicative averages for Stevenage. Actual quotes will vary based on job specifics.
What Affects the Cost?
The cost of an extension in Stevenage is influenced by the size and complexity of the build, foundation requirements, and local ground conditions. Single-storey extensions typically cost less per square metre than two-storey additions. The choice of materials—from standard brick and render to premium finishes—significantly affects the overall budget. Planning permission and building regulation compliance are mandatory and add both time and cost. Proximity to services (water, electricity, drainage) and structural work needed can substantially increase expenses on individual projects.
Money-Saving Tips
Prioritise simple, rectangular designs over complex shapes to reduce labour costs. Obtain multiple quotes from local builders to compare pricing and standards. Consider scheduling your extension during quieter seasons (autumn/winter) when extension builders may offer better rates. Use standard materials where possible rather than custom finishes, and plan ahead for planning permission to avoid costly delays.
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