House Renovation Contractor: Find Your Creative Solutions

Renovating a three-bedroom house in the UK in 2026 can cost anywhere from roughly £20,000 for a limited cosmetic update to well above £150,000 for a full structural or high-spec renovation. Current UK cost guides place a typical three-bedroom whole-house renovation in a broad range around £43,500–£110,000 plus VAT, while more detailed 2026 estimates show medium renovations around £30,000–£60,000 and full or high-spec projects from £60,000 to £180,000+ depending on floor area, region and scope.

The reason the range is so wide is simple: “renovate a 3-bed house” does not describe one job. One homeowner may mean paint, flooring, a kitchen and a bathroom. Another may mean a full rewire, new plumbing and heating, roof repair, replastering, structural wall removal, new windows, a new kitchen, two bathrooms and premium finishes. The second project can cost several times more even if the houses are the same size.

This guide builds a realistic 2026 budget step by step. We will look at cost bands, cost per square metre, room-by-room allowances, VAT, professional fees, contingency, regional differences and the hidden costs people often miss. For a personalised starting estimate, use The Dryden’s House Renovation Cost Calculator.

3-bed house renovation cost UK 2026: quick answer

These figures are planning ranges, not quotations. VAT can materially change the total, and extensions or loft conversions should usually be budgeted as separate workstreams.

What do current 2026 UK cost guides say?

Current published UK benchmarks illustrate the spread. Checkatrade’s 2026 guide places the cost to renovate a three-bedroom house at approximately £43,530–£110,350 plus VAT. Other detailed UK cost resources put light three-bed renovations around £15,000–£30,000, medium projects around £30,000–£60,000, full renovations around £60,000–£100,000 and high-end projects around £100,000–£180,000 or more.

Design-led renovation sources using recent homeowner budgets can quote still higher ranges, particularly when “full renovation” includes extensive services, structural work and premium finishes. This is why a single national average is less useful than a scope-specific budget.

How big is a typical three-bedroom house?

Many UK three-bedroom houses fall roughly in the 80–100m² range, but size varies enormously between terraces, semis, detached houses and period properties. Floor area matters because plastering, flooring, decoration, electrics and heating generally increase with size.

However, area is not the only driver. Kitchens and bathrooms are disproportionately expensive because they contain services, fittings and specialist labour. A compact 80m² property with two bathrooms and major structural alterations may cost more than a simple 110m² property with one bathroom and sound services.

Our Renovation Cost Per Square Metre UK 2026 guide explains how to use floor area without relying on it blindly.

Cost per square metre for a 3-bed renovation

These are base construction examples. VAT, professional fees, contingency, temporary accommodation and extensions may sit outside the number.

What does a £20,000–£40,000 renovation look like?

At this budget level, expect to prioritise rather than rebuild everything. A project might include full decoration, replacement flooring, repairs, lighting changes, a modest kitchen refresh and a basic bathroom replacement. If the electrical installation, boiler, roof, windows and plaster are in good condition, the money can produce a visible transformation.

The budget becomes difficult if major services need replacement. A full rewire, new heating system and roof work can absorb a large percentage before any new kitchen or decoration is purchased.

This level is therefore best described as a cosmetic or selective renovation rather than a full house refurbishment.

What does a £40,000–£70,000 renovation look like?

This is a common medium-renovation band outside the most expensive regions. It may include a new mid-range kitchen, one bathroom, substantial decoration, flooring, plaster repairs, some electrical work and selected plumbing or heating improvements.

Scope discipline is important. If you start moving walls, replacing every window and upgrading every finish simultaneously, the project can quickly leave the band. Keeping the kitchen and bathroom in their existing positions can protect the budget by reducing plumbing and structural work.

What does a £70,000–£120,000 renovation look like?

This budget can support a much more comprehensive refurbishment. A typical scope might include full rewiring, a new heating system, kitchen, bathroom, extensive plastering, flooring, decoration, windows or roof repairs and some structural reconfiguration.

For an older property, this may be the realistic territory for bringing the building fabric and services up to a good standard before spending heavily on decorative finishes. In London or the South East, the same scope may cost more because labour, logistics and contractor overheads are higher.

When does a 3-bed renovation cost £150,000 or more?

Costs reach six figures quickly when several expensive factors combine. Examples include a high-spec kitchen, two or more bathrooms, major wall removal, new steels, replacement windows, roof work, full electrical and plumbing replacement, underfloor heating, bespoke joinery, premium flooring and difficult site access.

A period house can add restoration work. London can add labour and logistical cost. Adding an extension or loft conversion can push the total well above £150,000 even if the existing-house refurbishment itself is controlled.

Kitchen renovation cost in 2026

For many three-bedroom houses, the kitchen is the largest single interior package. A broad 2026 planning range is approximately £7,000–£30,000+, with luxury bespoke kitchens much higher.

Cost depends on cabinetry, worktops, appliances, electrical work, plumbing, flooring, lighting and whether the layout changes. Keeping sinks, waste pipes and major appliances near existing services usually costs less than moving everything across the room.

For a deeper breakdown, see our existing guide to UK kitchen renovation costs.

Bathroom renovation cost in 2026

A typical bathroom can cost approximately £6,000–£15,000+ depending on size, sanitaryware, tiles, waterproofing, ventilation and plumbing changes. A second bathroom or en-suite multiplies the number of high-cost wet areas in the house.

Bathrooms often produce unexpected costs because old pipework, rotten floors or water damage become visible after removal. Include them in both the base scope and contingency planning.

See our bathroom renovation cost guide for more detail.

Full house rewiring cost

Current UK guides commonly place a three-bedroom rewire around £4,000–£8,500, although property size, occupancy, access, number of sockets and extent of making good can push it higher. If walls are already being replastered, coordinating electrical work before finishes can reduce disruption.

Electrical safety is not an area to postpone merely to preserve decorative spending. Have the existing installation assessed and use appropriately qualified contractors.

Heating and boiler costs

Heating upgrades can range from a boiler replacement to a complete new system with pipework and radiators. Broad three-bedroom allowances often sit around £3,000–£8,500+, with heat pumps, underfloor heating or extensive alterations potentially higher.

If floors and ceilings are already open, coordinate heating routes before making good. Reopening finished areas later is expensive.

Windows and external doors

Replacing windows can cost several thousand pounds, and period or conservation requirements can increase the price considerably. For an ordinary three-bedroom house, current guides may allow roughly £2,500–£8,000+ depending on quantity and material.

Do not assume every old window needs replacement. Repair can be cost-effective for good timber frames, particularly where character matters.

Roof repair or replacement

Roof work is one of the most important “unexciting” costs. A leaking roof can damage newly finished rooms, so address it before expensive interiors. Whole-roof replacement or major repair can commonly fall around £6,500–£18,000+ depending on size, scaffold, structure and covering.

Get a proper inspection rather than budgeting from street-level appearance alone.

Plastering and making good

A whole-house rewire, plumbing changes and structural alterations can leave walls and ceilings requiring extensive repair. Whole-house plastering can run into five figures. It is easy to underestimate because individual room quotes appear manageable until every room is added.

Include preparation, plastering, drying time and final decoration in the programme as well as the budget.

Flooring costs

Flooring varies from budget carpet and laminate to engineered timber, stone or premium tile. Do not calculate only the visible finish. Subfloor levelling, damp-proofing, underlay, skirting changes and transitions can add labour and materials.

If floors are being lifted for services, inspect the structure before committing to expensive finishes.

Structural alterations

Removing load-bearing walls usually requires a structural engineer and may require steel beams, padstones, temporary support and building-control approval. The cost is not only the beam. Demolition, rerouting services, plastering, flooring and decoration around the opening all add to the package.

Several wall removals can push a medium refurbishment into full-renovation territory.

Extension costs

Do not price an extension using the internal renovation rate. Current 2026 UK extension guides often begin around £2,000–£3,500+ per m² depending on region, complexity and specification, with London and high-spec work higher.

A 20m² rear extension can therefore add tens of thousands of pounds before the kitchen inside it is fully fitted. Keep extension construction and existing-house renovation as separate cost centres.

Loft conversion costs

A loft conversion can add around £40,000–£70,000+ to a project depending on type, structure, staircase, dormers, roof work and whether a bathroom is included. Complex London projects can cost more.

If your “3-bed renovation” is also creating a fourth bedroom in the loft, compare budgets that include the conversion rather than a simple three-bed refurbishment benchmark.

Professional fees

Major renovations may require an architect or designer, structural engineer, building-control fees, planning fees, party-wall surveyor and specialist surveys. A quantity surveyor or project manager can also be valuable on larger schemes.

Professional fees should be a visible budget category. Do not use the contingency to pay predictable design costs.

Planning permission and building regulations

Many internal works do not require planning permission, but extensions, significant external alterations and listed buildings can. Building Regulations may apply even where planning is not required. Structural changes, electrical work, drainage and thermal upgrades can trigger specific requirements.

Check the project with the local authority or appropriate professional early. Retrospective changes can be much more disruptive.

How much contingency should you add?

For many three-bedroom renovations, 10–15% of construction cost is a sensible starting point. For an older house, full strip-out or project with significant unknowns, 15–20% may be more appropriate.

On an £80,000 base project, 15% is £12,000. On £120,000, it is £18,000. That reserve should remain available for genuine unexpected conditions rather than decorative upgrades.

Read How Much Contingency Should You Add to a Renovation Budget? for a risk-based method.

Does the price include VAT?

Not necessarily. This is one of the most important questions to ask when reading online cost guides or contractor quotes. If a £100,000 quote is excluding 20% VAT, the cash requirement can become £120,000 before fees and contingency.

Keep all budget figures consistently net or gross and clearly label them.

Regional differences across the UK

Labour rates, demand and site logistics vary significantly. London and parts of the South East often carry a premium, while some regions of the Midlands, North, Wales and Scotland may be lower. Current 2026 cost guides commonly cite London/South East premiums of roughly 20–50% depending on the type of work and source.

Major cities outside London can still be expensive. Obtain local quotations rather than applying a national average mechanically.

Why London projects cost more

Labour is only part of the story. Parking restrictions, congestion, waste removal, scaffold licences, neighbour constraints, limited access and building-management rules can all increase site overhead. In a terrace, moving materials through the house instead of down a side passage adds labour to almost every trade.

London renovation specialists publish very wide 2026 ranges—often around £800–£1,950 per m² for standard-to-premium refurbishment, with luxury or heritage projects far higher. Scope remains the main variable.

What changes in an old house?

An older house may require rewiring, lead-pipe replacement, damp treatment, timber repair, chimney work, roof repair, drainage upgrades or removal of hazardous materials. Period details can also be expensive to repair correctly.

Budget more cautiously and investigate before buying expensive finishes. See Renovating an Old House: The Extra Costs You Need to Budget For.

Temporary accommodation

Living through a full renovation can be difficult or unsafe, especially when kitchens, bathrooms, heating or electrics are disconnected. Budget for rent, hotels or staying elsewhere if necessary, plus storage and moving costs.

An overrun of eight weeks can materially change these costs, so consider a separate time-related reserve.

Storage and removals

Furniture in the house slows trades and risks damage. Storage can make the site more efficient but adds monthly cost. You may also need two moves: out before construction and back after completion.

Get realistic quotes and include insurance where appropriate.

Insurance during renovation

Standard home insurance may not cover major building works in the same way as normal occupation. Tell your insurer about the project and check what cover is required for an empty or partially occupied property. Contractors should also have appropriate insurance for their work.

Insurance is a small budget item compared with construction but a major financial protection.

Utilities and council tax

Energy use can increase during drying, heating and tool use. Water and electricity may remain payable even if you move out. Council tax treatment depends on the circumstances and local rules.

Do not assume an empty renovation property has zero running cost.

Waste removal and skips

Demolition produces more waste than many first-time renovators expect. Skips, grab lorries, specialist disposal and permits can add thousands across a full project. Hazardous materials require controlled removal rather than standard waste disposal.

Check whether waste is included in the contractor’s quotation.

Example budget: 90m² medium renovation

This example is deliberately simplified and does not automatically include VAT, professional fees or accommodation.

Example budget: full 3-bed renovation

The numbers show how a full renovation reaches six figures without luxury finishes.

Example: £100,000 maximum budget

If £100,000 is your absolute construction limit and you want a 15% contingency, do not commission £100,000 of base work. Divide the maximum by 1.15. That gives a base target of approximately £86,956, leaving about £13,044 as the 15% reserve.

Working backwards protects affordability. If contractor quotes exceed the base target, reduce scope before signing rather than assuming the contingency will never be needed.

How to reduce the cost of a 3-bed renovation

Retaining a functional layout is one of the biggest opportunities. Moving kitchens, bathrooms, doorways and structural walls creates service and making-good costs. Repair sound components instead of replacing everything. Use standard-size doors, windows and cabinetry where practical.

Specify important items before tender so contractors price the same scope. Make decisions early. Mid-build changes are expensive because completed work may need to be undone.

Where you should not economise

Prioritise a safe, dry and structurally sound building. Roof defects, unsafe electrics, gas issues, serious damp sources, rotten structure and drainage problems should come before premium worktops or decorative joinery.

Cosmetic finishes can be upgraded later. Concealed infrastructure is much harder to revisit once the house is complete.

DIY: how much can it save?

DIY decoration, simple demolition or some flooring can reduce labour cost if you have the skill, time and correct safety precautions. However, poor DIY can create rework that costs more than employing a trade initially. Electrical, gas, structural and other regulated or safety-critical work should be handled appropriately.

Also value your time. Taking six months longer to complete the house can increase rent, storage and financing costs.

Should you renovate before moving in?

If the project is extensive, completing disruptive work while the house is empty can be more efficient. Trades can access every room, floors can be lifted and services can be isolated without working around occupants. The trade-off is temporary accommodation.

If the scope is smaller, phasing rooms while living in the property may reduce cash outlay but extend the programme. Build the choice into the cost plan rather than deciding after work has started.

How long does a 3-bed renovation take?

A cosmetic refresh may take a few weeks. A medium whole-house refurbishment can take several months. A full structural renovation can run six months or longer, particularly when design, planning and procurement are included.

Programme affects cost. Longer projects create more site overhead and accommodation expense, so ask contractors about duration as well as price.

How to compare three renovation quotes

Give each contractor the same drawings, specification and schedule. Compare package by package rather than looking only at the total. Check exclusions, provisional sums, VAT, waste, scaffolding, decoration and who supplies fixtures.

A low quote with unrealistic kitchen and bathroom allowances can become the most expensive once selections are made.

Questions to ask before accepting a quote

• Is VAT included?
• What is excluded?
• Which items are provisional sums?
• Who supplies kitchens, bathrooms and finishes?
• Are scaffolding and waste included?
• How are variations priced and approved?
• What payment schedule is proposed?
• How long is the price valid?
• What insurance does the contractor hold?
• What is the estimated programme?

Written clarity before work begins is one of the best ways to control cost later.

Common 3-bed renovation budgeting mistakes

Using a national average without defining scope

Averages combine projects that are not comparable.

Forgetting VAT

Always verify whether published and quoted figures are gross or net.

Spending the contingency on finishes

Keep the reserve until the risks it covers have passed.

Pricing the extension at the renovation rate

New floor area generally costs more per square metre than internal refurbishment.

Buying the kitchen before checking the building

Resolve roof, damp, structure and services before committing too much budget to finishes.

Changing the design during construction

Late changes often create demolition and rework.

Frequently asked questions

Can you renovate a 3-bed house for £50,000 in 2026?

Yes, in some regions and scopes, particularly if the building is sound and the project is cosmetic-to-medium. A full strip-out with services, structural work and premium finishes is unlikely to fit comfortably.

Is £100,000 enough to fully renovate a 3-bed house?

It can be outside the highest-cost regions if scope and specification are controlled, but an older, structural or London project may exceed it. Keep contingency inside the affordability limit.

How much does a 3-bed renovation cost in London?

A full renovation can easily move into roughly £100,000–£230,000+ territory depending on floor area, specification and structural work. Obtain London-specific quotations.

How much should I allow for a kitchen and bathroom?

A mid-range kitchen may cost around £10,000–£20,000 and a bathroom around £6,000–£15,000, but product choices can push both higher.

What is the biggest hidden cost?

There is no single answer. In older houses, services, roof defects, damp, timber decay, drainage and structural surprises are common major risks.

Should I add 10% or 20% contingency?

Use 10–15% for a relatively predictable project and consider 15–20% or more where the building is older, extensively opened or structurally complex.

Final answer

For a three-bedroom UK house in 2026, think in scenarios rather than one headline average. A selective cosmetic renovation can fit below £40,000. A medium project often sits around £40,000–£70,000. A comprehensive renovation commonly reaches £70,000–£120,000+, while structural, high-spec or London projects can exceed £150,000–£200,000.

Start with the property condition and required scope, calculate a realistic base, confirm VAT and professional fees, then protect a contingency appropriate to the risk. If the total is above your limit, reduce the scope before construction rather than relying on optimistic allowances.

For a personalised estimate, use the House Renovation Cost Calculator, then compare the result with our guides to 2026 renovation cost per square metre and renovation contingency.

All figures are broad UK planning estimates for 2026. Actual costs vary by property, region, specification, contractor, VAT treatment and scope. Obtain surveys, professional advice and detailed quotations before committing to expenditure.