Loft conversions · Extensions · Renovations · Bristol
More space. None of the horror stories.
Twenty-seven Google reviews, every one of them five stars. Two carpenters who start at 8am, write every line of the quote down, and hand your house back better than they found it.
Victorian renovation · Bristol
Members and registered with
- MemberFMBFederation of Master Builders
- AccreditedSafeContractorHealth & safety · SSIP
- RegisteredTrustMark
- MemberIWAIndependent Warranty Association
- MemberSTAStructural Timber Association
Gas and electrical work on our projects is carried out by Gas Safe and NICEIC registered trades, with certificates issued for building control.
The credentials behind the work.
Every one of these is verifiable with the body that issued it — which is the entire point of having them. Nothing appears here until it is formally confirmed.
FMB Member
Independently vetted and inspected. Federation of Master Builders membership is not bought — it is assessed.
SafeContractor accredited
Our health and safety is independently audited and re-assessed every year, to the SSIP standard main contractors check for.
Insurance-backed guarantee
Our workmanship guarantee is insurance-backed through the Independent Warranty Association.
Structural Timber Association
Members of the UK trade body for structural timber. Roofs, lofts and timber frames are carpentry, and carpentry is where we started.
Gas Safe
Every gas appliance on our sites is worked on by a Gas Safe registered engineer. It is the legal register — there is no alternative.
NICEIC
Electrical work certified by NICEIC-registered electricians, with certificates issued for building control.
SMSTS site management
CITB-accredited site management competence running every project, not just the big ones.
CSCS carded team
Every operative carries a card evidencing the training and qualifications for the work they do.
Subject to the Independent Warranty Association's terms and conditions. Not every element of a project is covered — the IWA sets out the cover in full. Visit the IWA.
What we build
From the first spade to the final coat.
Eleven services, one accountable team — structure first, finishes second, honesty throughout.
- Loft ConversionsA bedroom, an office or a whole new floor — built into the roof you already own.from £40,000+ VAT
- House ExtensionsKitchen-diners, garden rooms and whole extra storeys — engineered, weathertight and finished by one team.£1,800–£3,000 / m²+ VAT
- RenovationsFrom a tired house to a finished home — structural honesty first, beautiful finishes second.
- Reinstatement WorksWhen the worst has already happened, you need a builder who has done this before.
- Garage ConversionsThe most cost-effective room your house can gain is probably full of boxes right now.from £10,000+ VAT
- Design & BuildOne team from first sketch to handover — design delivered with our partner architects, built by the people who priced it.
- GroundworksThe part of the build you never see again — which is exactly why it has to be right.
- Energy & RetrofitA report, a costed plan, the works, the certificate — in that order, from one team.
Watch a home happen
Seven months. One team. No handovers.
This is a real Brislington new build from our project record — photographed at every stage, because a company asking you to trust it with a whole house should show its working.
February — Groundworks
Excavation, foundations and drainage — in winter ground.
0.0
Google rating
every review five stars
0
Google reviews
as of 18 Sep 2026
0+
Years on the tools
combined, and counting
since2021
Building as W&C
named after our grandfathers
Why Wilson & Cole
The promises our reviews keep repeating back to us.
On site at 8am
Site hours are 8am–5pm, Monday to Friday — and we keep them. One review put it best: they would begin work at 8am without fail.
A detailed, itemised quote
Every line written down, so you can see what the steels cost and what the stairs cost. The price only changes if you agree the change first.
Your house, protected
Floors covered, dust managed, tools away and the site left clean every evening. Immaculate is the word our clients keep choosing.
News the same day
Old houses hold surprises. When one appears you hear it from us the same day — with options and honest numbers, not a bigger invoice later.
How it runs
Four moves, no mystery.
- 1
The visit
We measure, look at the structure and listen to what the space needs to do.
- 2
The quote
Detailed and itemised from a real survey — every line visible.
- 3
The build
One team, an agreed sequence, and a working house every evening.
- 4
The handover
Certificates, guarantee paperwork and a walk-round to snag anything.
★ 5.0 on Google
Taken at their word.
“Would 100% recommend Wilson and Cole Developments. They completed a rear extension and remodel of the downstairs of our Victorian terrace which we are thrilled with. From start to finish of…”Read the full review →
“I can highly recommend Wilson & Cole. They did some complicated renovation work for me that involved wall stitching, replacing ceiling beams and roof struts, and a creative arrangement to…”Read the full review →
“Wilson and Cole Developments did an extension and loft conversion on an unused garage and attic space for me. They were very committed to their work, had a professional attitude, always on…”Read the full review →
“Dan and Craig built x2 loft conversions for me, both with 2 bedrooms, bathrooms and dorma. They are great guys, very experienced. I would definitely use again.”
“Great experience working with Dan, always available if needed and very professional. Did a brilliant job fixing the render on our 7 block of flats. Could not be happier. Would recommend to…”Read the full review →
“Posting this post work being completed on our 2011 Charles Church terraced home in Portishead. We were recommended Dan and Craig by Concept Claims Solutions who dealt with a claim for us…”Read the full review →
“Amazing from start to finish! We found Dan and Craig after a massive leak from our attic so they whole house needed work! They were attentive, professional, helpful and kind, even when I was…”Read the full review →
“What a great team! Having had a problem with a cowboy builder in the past, I wanted to make sure of using due diligence before selecting a potential builder. The work was to remove, replace,…”Read the full review →
5.0 from 27 Google reviews, as of 18 Sep 2026 — every one of them five stars, every one attributable.
Worked with us? A review takes a minute and is how the next family finds us.
Who we build for
Four kinds of client. One standard of site.
Straight numbers
Prices published in the open.
From-prices, plus VAT — because that's the only honest way to price a roof nobody has surveyed yet. The estimator turns them into an indicative range for your project in thirty seconds.
| Velux / room-in-roof conversion | from £35,000 |
| Dormer loft conversion | from £40,000 |
| Hip-to-gable loft conversion | from £50,000 |
| Mansard loft conversion | from £50,000 |
| Garage conversion | from £10,000 |
| House extension | £1,800–£3,000 / m² |
All figures plus VAT · itemised quote from a real survey.
Insights
Straight answers, written down.
Start with a conversation, not a contract.
A visit costs nothing and commits you to nothing. We'll look at what your house can take, give you straight answers, and tell you plainly if the numbers don't stack up.
- You tell us the ideaThree quick questions — no essay required.
- We call within a working dayA real conversation about what your house can take.
- A visit, then an itemised quoteEvery line written down, and only if you want one.
- On site
- Mon–Fri, 8am–5pm
- Office calls
- until 6pm weekdays
- We reply
- within one working day