Builder Quotein Portsmouth, UK

Describe your builder job using text or voice. Our AI analyses the details, checks local rates in Portsmouth, Hampshire, and generates an itemised quote in seconds. No waiting for callbacks, no phone tag, no site visits for straightforward work.

Yes, completely free. You can generate as many quotes as you like with no obligation and no credit card required. The AI shows its working so you understand where each line item comes from.

Our AI is trained on thousands of real builder quotes and local pricing data for Portsmouth and the wider United Kingdom market. Every job is unique, but the estimates give you a reliable ballpark within ±15% for typical work so you know what to expect.

Click the "Get Your Free Quote" button and describe the builder job in plain language, or upload a photo. The AI will ask clarifying questions if needed and return a detailed estimate in about 30 seconds. No signup required.

Typical Portsmouth ranges: single-storey rear extension (3x4m) £18,540 – £41,200, loft conversion with dormer £22,660 – £56,650, garage conversion to habitable room £8,240 – £18,540. Portsmouth pricing runs about 3% above the UK average, and the exact figure depends on scope, materials and access — describe your job to the AI for an itemised local estimate.

Southampton charges much the same as Portsmouth, and London about 21% dearer. Each city's rate is calibrated separately from local data, so the figure you get reflects Portsmouth specifically.

The estimate is calibrated for Portsmouth and the wider Hampshire area, including Southampton. If your property falls just outside Portsmouth, mention the town or postcode when you describe the job and the AI adjusts the rate to match.

Many single-storey rear extensions fall under permitted development, but larger builds, second storeys, and anything in a conservation area need planning permission. The AI estimate flags likely planning costs so you can budget correctly.

A standard single-storey rear extension usually takes 10–14 weeks from first dig to handover, assuming no foundation surprises. Loft conversions typically run 8–12 weeks.