How much of the systems you renew
Plumbing, wiring, heating. Renewing them while walls are open is cheaper than coming back later.
The honest guide
House renovation costs: the honest guide
‘How much does it cost to renovate a house?’ is the first question every homeowner asks — and the internet's answers are mostly guesses by people who don't renovate houses. We do — week in, week out, across West London. Here's how the budget actually breaks down.
The breakdown
What actually drives the budget, element by element
| Element | What's involved |
|---|---|
| Complete kitchen renovation | The kitchen itself plus strip-out, flooring, electrics, plumbing and finishing |
| Full bathroom renovation | Rip-out, re-plumb, rewire, tile, fit and decorate |
| Bedroom & fitted wardrobes | Wardrobes, flooring and decoration |
| Flooring throughout | Engineered wood, luxury vinyl tile or carpet; underfloor heating is decided here |
| Full rewire | Usually worth doing while walls are open |
| Full re-plumb & heating | Including the radiators-or-underfloor decision |
| Plastering & decoration throughout | The finish everyone actually sees |
| Windows, bi-folds & skylights | Per opening and specification-dependent |
The real levers
The five things that actually move the number
Kitchens and bathrooms
The two most expensive rooms per square metre. Their specification sets the tone of the whole budget.
Specification
The same room in mid-range and premium finishes can differ sharply. We show both in the showroom so you choose with your eyes open.
The state of what's underneath
Old floors, damp and previous work. A proper survey before quoting beats a surprise invoice after.
Who manages it
Separate trades booked by you can look cheaper on paper; overruns, gaps and re-dos often erase the saving. One managed team keeps accountability in one place.
An honest note
Renovation vs extension
We don't build extensions or loft conversions, and we won't pretend otherwise. If you need more space, you need an architect and a building contractor. If you need the space you have to work brilliantly — that's exactly what we do.
Budgets, kept
Delivered to time — and within budget
“We had a total renovation of our flat, and are really pleased with the results. Everything delivered to time, incredible quality of workmanship…”HGoogle review
“Our flat renovation is finally complete with a beautiful kitchen and two bathrooms… most importantly they kept within our budget.”Batool AbbasGoogle review
Our system
How Arch keeps your budget honest
One fixed, itemised proposal before work starts — design, supply, installation, room by room. One contract, one schedule, one team, under our name and insurance. If something genuinely unforeseen appears mid-project, you hear about it with a cost before any work continues. That's how we run every full home renovation in London — and every complete kitchen renovation.
Good to know
Cost questions, answered honestly
Is it cheaper to renovate room by room or all at once?
All at once, almost always — one strip-out, one team on site, trades sequenced once.
Do you charge for the consultation?
No — the consultation and initial scoping are free, and you get a fixed, itemised proposal before any work starts.
Get a real number
Get a real number for your home
Book a renovation consultation — bring a floor plan or just photos — and we'll give you an honest room-by-room view of what your renovation would cost. Or visit us at 323–325 King Street, Hammersmith, London W6 9NH.
020 8741 1589Arch KBB · 323–325 King Street, Hammersmith, London W6 9NH