Rated builders
4
Typical rate
£35–£55/hr
Call-out from
£75
Every builder we found in SO21, with Google's own ratings — collected by Google, not by us. The bar beside each name is their review count on one fixed scale, so the list can be read at a glance and a short list is a short district, not a hidden one.
Most trusted first
Review volume
Contact
Most trusted first
loft conversion · Winchester · in SO21
Rated by more people than any other business on this page.
67reviews
★ 4.8 average on Google
loft conversion · Arundel · in SO21
No website listed. The phone is the only way to reach them.
14reviews
★ 5.0 average on Google
extension builder · Winchester · in SO21
13reviews
★ 5.0 average on Google
bricklaying · Winchester · in SO21
New listing · 3 reviews
Based in neighbouring districts, covering SO21 — each card shows where they're actually based.
extension builder · Winchester · SO23 9EH · Website
★ 5.0 · 5 reviews on Google
extension builder · Winchester · SO22 6LG · Website
★ 5.0 · 1 review on Google
extension builder · Winchester · SO23 8SR
★ 4.6 · 25 reviews on Google
extension builder · Winchester · SO23 9EH · Website
★ 4.0 · 1 review on Google
extension builder · Winchester · SO23 9HB · Website
★ 3.4 · 5 reviews on Google
✦ Local pricing insight
Builder in SO21 typically charge £35–£55/hr
A general guide to UK rates for this trade — not a quote from any business on this page, and not based on jobs booked through Domifyr. Always get a written quote before work starts.
✦ Builder cost calculator
Based on builder rates in SO21, Winchester.
The calculator gives you a range. For a real number, send the job to local builders serving SO21 — free, and they reply to you directly.
Send a quote requestDomifyr lists 4 builders serving SO21and the surrounding postcodes, each shown with its genuine Google rating and review count. We don't check insurance or trade certifications ourselves, so ask to see them before work starts — as you would with any tradesperson.
Typical hourly rates for builders in SO21 range from £35 to £55, with a callout fee around £75. Southampton rates sit mid-range for South Coast; extensions and conversions vary significantly with scope and finishes, marine climate affects external work scheduling. Fixed-price quotes are available for most standard work — request one through Domifyr for free.
| Job | Typical range |
|---|---|
| House extensions | £25,000–£85,000 |
| Loft conversions | £28,000–£65,000 |
| Garage conversions | £12,000–£28,000 |
| Structural alterations | £3,500–£18,000 |
| Bricklaying | £400–£850 |
| Groundwork and foundations | £5,000–£22,000 |
| Rendering | £35–£75 |
| New builds | £180,000–£450,000 |
Indicative ranges from market data — actual quotes vary by scope, access, materials, and timing. Request quotes through Domifyr for accurate figures.
Typical builders in SO21 charge £35–£55 per hour, with a callout fee around £75. Emergency callouts are typically 40% higher. Southampton rates sit mid-range for South Coast; extensions and conversions vary significantly with scope and finishes, marine climate affects external work scheduling.
Most builders in SO21 can quote within 24 hours for standard work. For emergencies (leaks, lockouts, no heating), expect a response in 1–3 hours.
Every listing comes from a real Google Places entry, shown with its genuine Google rating and review count — we don't invent ratings. We can't guarantee a business is still trading, and we don't check insurance or certifications, so always confirm both before work starts, as you would with any tradesperson.
About this guide
Compiled from held data
This guide is assembled by Domifyr from the data we hold: Google ratings and review counts (collected by Google, not by us), UK statutory register requirements, and typical price ranges for the area. No individual author is credited because no individual wrote it — and we would rather tell you that than invent someone.