Grimsby, North East Lincolnshire
Garage Conversion in Grimsby
A garage conversion transforms an existing garage into a habitable room, offering one of the most affordable ways to add living space without building an extension.
Estimated Cost
£7,800 – £15,000
Based on 15m² at local rates
3–6 weeks typical duration
Planning permission: Usually not required
Cost Breakdown for Garage Conversion
Estimated costs for a typical 15m² garage conversion project, adjusted for local labour and material rates.
| Category | Low Estimate | High Estimate |
|---|---|---|
| Foundations & Groundworks | £936 | £1,800 |
| Structural Walls | £1,170 | £2,250 |
| Roof Structure & Covering | £780 | £1,500 |
| Windows & Doors | £624 | £1,200 |
| Plumbing & Drainage | £624 | £1,200 |
| Electrical Installation | £468 | £900 |
| Plastering & Rendering | £468 | £900 |
| Flooring | £390 | £750 |
| Kitchen/Bathroom Fitting | £780 | £1,500 |
| Decoration & Finishing | £390 | £750 |
| Professional Fees | £780 | £1,500 |
| Contingency (10%) | £390 | £750 |
| Total Estimated Cost | £7,800 | £15,000 |
* Costs are estimates based on regional averages and may vary depending on specification, access, and site conditions. Prices include VAT at 20%.
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