Home Renovation Forest Hill
Whole-home renovations in Forest Hill, layout, structure, kitchen and bathroom planned as one job, structure first, then services, then finishes.
- Rated 4.9 from 31 reviews on MyBuilder
- London guide: £40,000 to £150,000+
- Free site survey, itemised quote
GS Renovation refurbishes whole houses across Forest Hill, taking tired Victorian and Edwardian terraces in SE23 back to bare brick and rebuilding them properly. One team rewires, replumbs, replasters and reconfigures the dated layout while protecting the period features that give these homes near the Horniman Museum their character.
In Forest Hill, a full house refurbishment typically costs £40,000 to £150,000 or more (indicative London ranges, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Forest Hill: we carry the structure, services and finishes as one contract.
The two rooms that cost the most have their own pages, with prices: kitchen renovation in Forest Hill and bathroom renovation in Forest Hill. With 58% of homes in Forest Hill flats, the soil stack usually fixes where a bathroom can go, and the lease may need the freeholder's consent for either room.
Price guide
| Work | Indicative London range |
|---|---|
| Full house refurbishment | £40,000 to £150,000+ |
| Kitchen renovation | £18,000 to £60,000+ |
| Bathroom renovation | £6,000 to £20,000+ |
Indicative London ranges (MyBuilder and Checkatrade, 2026), not a quotation. Prices checked September 2026. Full breakdown: Full House Renovation Cost.
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Forest Hill range: choose above

Whole-house refurbishment in Forest Hill
A full renovation of a Forest Hill terrace usually starts by stripping out decades of piecemeal alterations, then sequencing the work in the right order. Structure and any steel beams come first, followed by first-fix electrics and plumbing, plastering, then kitchens, bathrooms and decoration. Running it as one programme avoids the classic problem of trades undoing each other's work, and it keeps a bay-fronted terrace with its closet wing coherent from front door to rear return.
These SE23 houses were built with solid walls, suspended timber floors and original joinery, so we renovate with that construction in mind. We upgrade insulation and services sensitively, tackle damp and tired timbers, and reconfigure poky Victorian rooms into layouts that suit modern life. Where the ground floor is opened up, the structural work is signed off by building control, and the whole job is delivered by people who understand these terraces. The same order applies whether the work is a full house refurbishment or the refurbishment of one of the many SE23 flats carved out of these houses, where the lease and the freeholder's consent add a step before anything starts.
Housing in Forest Hill
Forest Hill's housing, as the Council Tax list records it, is about 11,040 homes: 42% houses, 58% flats, with 54% pre-1919, 13% interwar and 30% built since 1945. Where most homes are flats, a whole-flat refurbishment in Forest Hill works to the lease: the freeholder's licence for alterations, agreed working hours and sound insulation between floors.
Windows in a Forest Hill renovation need their consent checked first
A whole-house renovation in Forest Hill often repairs or replaces the windows, and that is where the outside of the building enters the job. Lewisham's Duty Planner Standard Service gives written advice on window replacement, including for properties within a conservation area, so the question can be put to a planning officer before a joiner or window company is instructed. That matters most in a converted villa, because in conservation areas Lewisham treats flats or subdivided houses as having no permitted development rights, so exterior changes such as new windows need planning permission.
If an application is needed, Lewisham requires a heritage statement for all planning applications affecting buildings in conservation areas. The renovation sequence then follows the consent: survey the existing sashes, decide what is repaired and what is replaced, get the decision, and only then order joinery with a long lead time. Rewiring, replastering and new services can run while that decision is awaited in Forest Hill, so the windows go in towards the end of the programme rather than holding up the start.
Restoring period features in SE23
Part of the appeal of a Forest Hill villa or terrace is the cornicing, ceiling roses, picture rails, panelled doors and cast-iron fireplaces. Where these survive, we repair and reinstate them; where previous owners tore them out, we can source and fit sympathetic replacements. Skilled plasterers run new cornice to match the original profiles, and our joiners restore or replicate the sash windows and skirtings that define the age of the house.
Restoration sits alongside modern comfort, not against it. We hide new wiring and pipework behind period detailing, fit discreet heating, and improve insulation without stripping the home's character. Because renovation touches every trade, we coordinate electricians, plumbers, plasterers, joiners and decorators under one roof, so you have a single point of contact rather than juggling separate firms across your SE23 project from Honor Oak to the streets around Forest Hill station.
- Kitchen and bathroom design, supply and installation
- Planning permission and building control coordination
- Project management from first survey to final handover
VOA Council Tax stock of properties, March 2025, for Forest Hill West, Forest Hill East and Honor Oak. Counts rounded by the VOA.
Why Choose GS Renovation in Forest Hill
Forest Hill owners choose GS Renovation for whole-house work because one accountable team carries the entire refurbishment, from structure and services to the final decoration. That means correct sequencing, tidy working in an occupied or emptied home, and respect for the period detailing these terraces are known for. Our founder's 30+ years on the tools back the result.
- Kitchen and bathroom selections planned early to hold the programme
- Rated 4.9 from 31 reviews on MyBuilder
- Protected routes through the home so you can keep living in it
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
Giorgio is an excellent and intelligent workman, and with very reasonable prices! He installed a kitchen extractor fan in a complicated situation…
George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
FAQ
Frequently Asked Questions about Home Renovation Forest Hill
Are there hidden costs with home renovation in Forest Hill?
Every extra cost on home renovation in Forest Hill needs your written agreement, and the foreseeable ones are already priced within £40,000 to £150,000 or more (indicative). Work in late Victorian or Edwardian housing around SE23 occasionally reveals something behind plaster; when it does, GS Renovation stops, costs it and waits for your decision. The sequence of work stays fixed: roof and rainwater defects are fixed before new plaster inside.
Can you renovate my whole Forest Hill terrace while keeping its period features?
Yes. We refurbish Victorian and Edwardian terraces across SE23 while retaining and restoring cornicing, fireplaces, sash windows and other original detailing. We rewire, replumb and replaster behind the scenes, reconfigure the layout where it makes sense, and hand any load-bearing changes to a structural engineer with building control sign-off. The character stays; the services, comfort and layout are brought up to date.
Do I need an asbestos survey before renovating my Forest Hill house?
Yes, if the building dates from before 2000. The survey comes before any strip-out, because textured ceilings, old floor tiles, boiler flues and pipe lagging can all contain it, and anything found is dealt with before other trades start. In Forest Hill, where 30% of homes were built after 1945, later refits and extensions are as likely a source as the original fabric.
How should damp be tackled when renovating a solid-walled Forest Hill house?
Find the cause before choosing a treatment. Solid brick walls in period SE23 houses need to breathe, and cement render, gypsum plaster or blocked airbricks often trap the moisture that shows as damp. Lowering ground levels outside, clearing vents and ducted extraction in kitchens and bathrooms usually do more than an injected course. This is settled before replastering begins.
Can we live in our Forest Hill home through a full renovation?
For part of it, if the work is phased so one floor stays usable while another is stripped. The weeks of rewiring, replumbing and structural steel are hardest, with power and water off at intervals and dust everywhere, and many households move out for that stage then return for decoration. A Forest Hill flat is harder to phase, because there is rarely a second floor to retreat to.
Should the heating system be chosen before a Forest Hill renovation starts?
Yes, because it sets pipe routes, cylinder space and electrical load before any plaster goes on. A combi frees a cupboard but struggles with two showers at once; a heat pump needs larger emitters and room outside. Any gas appliance is moved by a Gas Safe registered engineer. Deciding late usually means chasing freshly plastered SE23 walls a second time.
What does Lewisham building control look at during a whole-house renovation?
Lewisham says its inspectors visit to ensure the build complies with building regulations, fire safety, energy conservation and access. On a Forest Hill renovation, energy conservation comes up whenever a floor, wall or roof is stripped and rebuilt, and insulation is one of the typical inspection stages Lewisham lists. Keep insulated areas open until the inspector has seen them, and keep the product data sheets on site for that visit.
What limits renovating a Forest Hill flat built since 2000?
The building's own design. 7% of Forest Hill homes were built in 2000 or later, and in blocks of that age the fire stopping, service risers and ventilation belong to an approved scheme for the whole building. Moving a kitchen or bathroom can mean new holes through a fire separating floor or wall, which the managing agent controls. We ask the managing agent what the lease allows and how the fire stopping was detailed before the new layout is drawn.
Can an Article 4 direction affect re-roofing a Forest Hill house during renovation?
Yes, for a house. Lewisham's Article 4 directions in conservation areas apply only to houses in use as a single dwelling house, and Lewisham lists alterations to the roof of a house as a change needing permission under a direction. A renovation that re-roofs in a different material, or adds rooflights to the front slope, should be checked against any direction on the street before the roofer is booked. A flat in a conservation area needs permission for exterior changes in any case.
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