House Renovation Costs in Kent: Room-by-Room Breakdown

Renovating a house is one of the best ways to add value, improve comfort, and make a property truly your own. But without realistic cost expectations, renovation projects quickly become stressful and over budget. This guide provides a detailed, room-by-room breakdown of renovation costs in Kent for 2026 — based on our experience delivering hundreds of renovation projects across the county.

Whole-House Renovation: The Big Picture

Before diving into individual rooms, it helps to understand overall renovation costs per square metre:

Light renovation (decoration, new flooring, cosmetic updates): £400–£800 per sqm
Medium renovation (new kitchen, bathrooms, rewiring, replastering): £800–£1,500 per sqm
Full renovation (structural alterations, new layout, everything replaced): £1,500–£2,500 per sqm
High-end renovation (architect-designed, premium materials throughout): £2,500–£4,000+ per sqm

For a typical three-bedroom semi-detached house (approximately 100 sqm), that translates to:

Light: £40,000–£80,000
Medium: £80,000–£150,000
Full: £150,000–£250,000
High-end: £250,000–£400,000+

These ranges are broad because renovation costs depend heavily on the property's condition, the extent of structural work, and your choice of materials and finishes.

Kitchen Renovation Costs

Kitchens are almost always the single most expensive room to renovate, but they also deliver the greatest impact on daily living and property value.

Budget kitchen renovation: £10,000–£15,000

Standard flat-pack or mid-range carcasses
Laminate worktops
Basic appliances (oven, hob, extractor, fridge-freezer)
New flooring (vinyl or laminate)
Painting and basic tiling
Existing layout retained (no structural changes)

Mid-range kitchen renovation: £15,000–£25,000

Quality rigid carcasses with soft-close mechanisms
Quartz or solid-surface worktops
Integrated appliances from reputable brands
Tiled splashback or full-height tiling
Underfloor heating
Minor layout changes (moving a radiator, adding an island)
New lighting design

High-end kitchen renovation: £25,000–£50,000+

Bespoke or premium kitchen units (Shaker, handleless, or in-frame styles)
Natural stone, dekton, or thick quartz worktops
Top-tier appliances (Siemens, Miele, Neff, Sub-Zero)
Structural alterations (removing walls for open-plan, adding steels)
Bespoke joinery (pantry units, window seats, integrated storage)
Designer lighting, premium tiling, and high-quality flooring

Important note: If your kitchen renovation involves removing a load-bearing wall (common when creating open-plan kitchen-diners), add £3,000–£8,000 for structural engineering, steel beams, and associated building work.

Bathroom Renovation Costs

Bathrooms are the second most impactful room renovation, and costs vary significantly depending on whether you are refreshing an existing layout or reconfiguring the space entirely.

Budget bathroom renovation: £5,000–£8,000

Standard white sanitaryware suite
Basic tiling (walls and floor)
New taps and shower fittings
Like-for-like replacement (no plumbing repositioning)
Painting and minor repairs

Mid-range bathroom renovation: £8,000–£15,000

Quality sanitaryware (wall-hung WC, vanity unit, freestanding or built-in bath)
Walk-in shower with frameless glass screen
Floor-to-ceiling tiling in quality porcelain or ceramic
Underfloor heating
Chrome or brushed nickel fittings
Heated towel rail
Recessed lighting and extractor fan

High-end bathroom renovation: £15,000–£30,000+

Designer sanitaryware (Duravit, Villeroy & Boch, Crosswater)
Natural stone or large-format porcelain tiles
Bespoke vanity units and storage
Walk-in wet room with linear drain
Smart shower systems (digital temperature control)
Bespoke lighting design
Complete plumbing reconfiguration

En-suite bathroom (new installation): Adding a new en-suite to an existing bedroom costs £8,000–£20,000 depending on specification and how far plumbing needs to run.

Bedroom Renovation Costs

Bedrooms are generally the most affordable rooms to renovate, as they rarely require plumbing or structural work.

Budget bedroom renovation: £2,000–£4,000

Replastering walls and ceiling
New flooring (carpet or laminate)
Full redecoration (painting, wallpapering)
New doors and door furniture
New light fittings

Mid-range bedroom renovation: £4,000–£8,000

All of the above, plus:
Built-in wardrobes (fitted furniture)
Engineered wood or quality carpet flooring
New windows (if replacing single-glazed or dated units)
Feature wall or bespoke joinery (window seat, shelving)

High-end bedroom renovation: £8,000–£15,000+

Bespoke fitted furniture
Premium flooring (solid hardwood)
Smart lighting systems
Sound insulation (particularly for loft conversions)
Integration with new en-suite bathroom

Living Room and Reception Room Costs

Budget: £3,000–£6,000 — Replastering, new flooring, redecoration, new fireplace surround.

Mid-range: £6,000–£15,000 — All of the above plus new windows, underfloor heating, bespoke shelving and cabinetry, feature fireplace installation.

High-end: £15,000–£30,000+ — Structural alterations (opening up rooms, adding glazing), premium materials, bespoke joinery throughout, integrated AV systems.

Hidden Costs That Catch Homeowners Out

Renovation budgets consistently underestimate several key areas:

Structural Work

Opening up rooms, removing chimney breasts, or altering floor layouts requires structural engineering. Budget:

Structural engineer's calculations: £500–£2,000
Steel beam installation (typical domestic span): £1,500–£4,000 per beam
Underpinning or foundation work: £5,000–£15,000+ (if structural issues are discovered)

Rewiring

Properties built before 1970 almost certainly need complete rewiring. Even 1980s and 1990s electrics may not meet current standards. Full rewiring costs:

Two-bedroom house: £3,500–£5,000
Three-bedroom house: £4,500–£7,000
Four-bedroom house: £6,000–£9,000

Rewiring is disruptive — floorboards are lifted, walls chased, and every room affected. It is best done at the start of a renovation before plastering and decorating.

Replumbing

Old lead pipes, corroded copper, or inadequate pipework needs replacing. Replumbing costs:

Partial replumbing (kitchens and bathrooms only): £2,000–£4,000
Full replumbing: £4,000–£8,000
New boiler and heating system: £3,000–£6,000 (combi), £5,000–£10,000 (system boiler with cylinder)

Damp and Timber Treatment

Older Kent properties frequently have damp issues — rising damp, penetrating damp, or condensation. Treatment costs:

Rising damp treatment (chemical injection): £60–£100 per linear metre
Replastering after damp treatment: £40–£60 per sqm
Timber treatment (woodworm, dry rot): £1,000–£5,000 depending on extent
Dry rot repair: £5,000–£20,000+ if structural timbers are affected

Asbestos

Properties built or renovated between the 1950s and early 1990s may contain asbestos in:

Artex textured ceilings
Floor tiles and adhesives
Pipe insulation
Soffits and fascias
Cement roof sheets

Licensed asbestos removal costs £500–£3,000 per area depending on material type and quantity.

Period Property Considerations

Kent is rich in period properties — Tudor, Georgian, Victorian, and Edwardian homes each present specific renovation challenges:

Listed buildings: Any alteration requires Listed Building Consent from the local authority. This adds time (8–12 weeks for approval) and cost (specialist materials, conservation-grade techniques). Budget 20–40% more than equivalent work on a non-listed property.

Conservation area properties: While not individually listed, properties in conservation areas face restrictions on external alterations, materials, and windows. Replacement windows may need to be timber rather than uPVC, adding significant cost.

Structural considerations: Older properties use different construction methods — solid walls rather than cavities, lime mortar rather than cement, lath and plaster rather than plasterboard. Renovations must respect these systems to avoid creating damp and structural problems.

Original features: Period mouldings, fireplaces, flooring, and joinery add character and value. Where possible, restore rather than replace. Specialist restoration costs more upfront but preserves property value.

Getting the Best Value from Your Renovation

1. Plan thoroughly before starting: Changes mid-renovation are expensive. Finalise layouts, specifications, and material choices before work begins.

2. Prioritise structural and mechanical work: Rewiring, replumbing, damp treatment, and structural repairs are unglamorous but essential. Skipping them to fund a flashier kitchen is a false economy.

3. Phase work if budget is tight: Complete essential structural and mechanical work first, then tackle cosmetic improvements as budget allows. A well-planned phased approach delivers better results than a rushed, under-funded single project.

4. Invest where it matters most: Kitchens and bathrooms deliver the greatest return on investment. Bedrooms and living rooms can be improved incrementally with paint and flooring.

5. Choose your builder carefully: Renovation work is complex, requiring diverse skills and careful coordination of trades. Experience matters enormously.

Planning a renovation in Kent? Carey Brothers & Sons have been renovating homes across the county for over 20 years. From single-room refreshes to complete whole-house transformations, we deliver quality workmanship, transparent pricing, and expert project management. Contact us for a free consultation and detailed quotation.