Planning a House Renovation in 2026? What It Costs in London

Planning a house renovation in 2026? Costs have moved again, and the figures that applied a year ago no longer hold. Across London, a kitchen renovation now runs from around £18,000 to £60,000 or more, a full bathroom £8,000 to £25,000, and a whole-house renovation typically £130,000 to £450,000 depending on the area, the age of the property and how much structural work is involved. This guide sets out the 2026 cost picture, what is pushing prices up, and how to budget without surprises.

For ideas on adding value to your property, read Renovation Projects That Add Value To Your Home.

Construction costs have kept rising through 2026, and they are rising faster on the materials side than on tender prices. The most recent figures show:

•Building costs: the BCIS General Building Cost Index was up 3.8% on a year earlier in the second quarter of 2026, and its Tender Price Index was up 3.2%.

•Materials: government data reported by BCIS shows construction materials prices across all work 6.4% higher in August 2026 than a year before, the biggest annual rise since March 2023. Repair and maintenance, which covers most renovation, was up 5.9%.

•Structural steel: fabricated structural steel rose 21.2% over the same twelve months. That matters for any project with beams, such as knocking through walls, extensions and loft conversions.

•Builders' merchants: prices were 7.6% higher in July 2026 than a year earlier, while sales volumes fell.

In practical terms, a project priced in 2025 would typically cost somewhere between 4% and 8% more today, and more where it relies heavily on steel. If you are comparing a quote from last year with a new one, allow for that before assuming anyone is overcharging.

Where the house is makes a big difference. Central London neighbourhoods such as Belgravia, Chelsea and Earls Court sit at the top of the price range, because of tight access, restricted parking and the specification expected on the properties. London costs run well above the national average, commonly 25% to 40% higher.

Heritage adds further cost. Houses in conservation areas or with listed status often need planning applications, matching materials and sign-off from conservation officers before work starts. Our renovations page explains how we manage that process from survey to handover.

•Light refresh: decorating, flooring and replacing fixtures with no structural change. This is the cheapest route, and in London it starts from around £30,000 for a whole house.

•Mid-range projects: a new kitchen or bathrooms, with rewiring and replumbing. Skilled labour and specification drive most of the cost.

•Full renovation: stripping a property back and rebuilding the layout, services and finishes. This is the most expensive route, typically from £130,000 and well above £450,000 on larger or high-specification homes.

Industry guides in 2026 put whole-house renovation in London at roughly £1,200 to £1,800 per square metre at mid-range specification, rising towards £2,500 or more for high-end and heritage work.

Skilled tradespeople in London now typically charge £200 to £350 a day, depending on the trade and the complexity of the work. Specialists such as structural engineers and architects add to that. Labour shortages in carpentry, plumbing and electrics keep those rates firm.

On materials, the main pressure points in 2026 are structural steel, pipework and heating equipment, with central heating boilers up 5.2% in August alone. Timber has been steadier, with imported sawn wood slightly cheaper than a year ago. Imported finishes can still move with exchange rates.

Kitchen renovation

£18,000 – £60,000+

Bathroom renovation (per bathroom)

£8,000 – £25,000

Full rewire, three-bedroom house

£4,000 – £9,000

Whole-house light refresh

From £30,000

Full house renovation (mid-range)

£130,000 – £450,000

Full house renovation (high-spec + structural)

£450,000 – £1,000,000+

A London kitchen typically costs between £18,000 and £60,000 or more. A budget scheme sits around £18,000 to £25,000, mid-range £25,000 to £40,000, and a premium specification £40,000 to £60,000 and above. Fulham and Richmond tend to sit higher because of the finish clients expect.

The main components are:

•Cabinetry: roughly £5,500 to £16,000, depending on whether it is made to measure or off the shelf.

•Appliances: from about £3,300 to £10,500 and above for high-specification brands.

•Labour: installation and fitting at London day rates of £200 to £350.

•Worktops and flooring: natural stone costs noticeably more than quartz or laminate, and is often the largest single item after the units.

A full bathroom in London now costs between £8,000 and £25,000. Budget schemes run £8,000 to £12,000, mid-range £12,000 to £18,000, and premium £18,000 to £25,000 and over. Paddington and Twickenham show a wide spread because standards vary so much between properties.

•Plumbing and tiling: plumbing from around £1,100, tiling £22 to £105 per square metre depending on material.

•Fixtures: toilets, basins and brassware typically £550 to £2,700 for a premium finish.

•Shower or bath: around £1,600 to £5,300 for higher-end options.

Loft conversion costs depend on the type of conversion and the planning context. In London, ranges for 2026 are typically:

Roof light (Velux)

£26,000 – £48,000

Dormer conversion

£58,000 – £115,000

Hip-to-gable conversion

£68,000 – £125,000

Mansard conversion

£84,000 – £155,000

The lower end of each range reflects outer south-west London and simpler roofs; the upper end reflects central boroughs, conservation areas and heavier steel. Our conversions page shows how each type is built.

With materials still rising and labour tight, the cheapest renovation is the one that is planned properly before the builders arrive.

1.Cost every item. Include materials, labour, professional fees, permits and furnishing. Then add a contingency of 10% to 15%, and nearer 20% on period properties, where hidden problems are common.

2.Order long-lead items early. Steel and some imported finishes have seen the sharpest increases. Fixing the specification early protects you from further rises.

3.Limit changes once work starts. Changing the design mid-project causes delays and variations that cost more than getting it right on paper.

4.Do the simple jobs yourself. Painting and assembling furniture can save money, but leave structural, electrical and gas work to qualified trades.

See what we have built on our projects page for an idea of what different budgets achieve.

A builder who works in your area every week brings real advantages, whether you live in Battersea, Roehampton or Chelsea:

•Lower travel and logistics costs: a local team reaches site quickly and is not charging for long journeys.

•Familiarity with the council: local builders know what each borough tends to accept, which helps with conservation areas and listed buildings.

•Reputation to protect: a builder who depends on referrals in your neighbourhood has every reason to leave the job well finished.

With so many builders to choose from, a short checklist cuts through the noise.

Check that the builder holds the right registrations and insurance. Membership of the Federation of Master Builders (FMB) shows the company has been vetted, and platforms such as Check a Trade let you verify tradespeople and read reviews. Ask to speak to recent clients and visit a finished project if you can.

•Why it matters: reviews and references show real projects and consistent quality.

•Where to look: Check a Trade, the FMB member directory, company websites, and past clients.

1.Get at least three quotes based on the same drawings and specification.

2.Ask for an itemised breakdown of materials, labour, timeline and optional extras.

3.Look for hidden costs, such as structural engineer fees, party wall surveyors, building control, scaffolding and making good.

4.Check provisional sums. A low total built on small allowances often grows later.

A good builder explains every line without hesitation. Vague timelines or lump sums are a warning sign. If you already hold quotes, send them to us through the contact page and we will review them with you for free.

Renovation prices in 2026 reflect higher materials costs, firm labour rates and tighter specifications. The projects that run to budget are the ones with a realistic contingency, a fixed specification and a clear, itemised quote from the start. If you want to see where your project is likely to land, speak to our team or call 020 7118 6155.

Dominant Construction is an FMB-registered building contractor with over 15 years of experience delivering renovations, extensions and conversions across London. Visit dominantconstruction.co.uk to see recent projects.