House Refurbishment Forest Hill

House refurbishment in Forest Hill is work on an old house, kept to its existing plan. In the VOA statistical areas for Forest Hill, which also take in Honor Oak, 54% of homes were built before 1919, and houses make up 42% of the stock: 28% terraced and 14% semi-detached or detached. Renewing one of them means a full rewire, new heating and pipework, lime plaster and joinery repairs, sash windows put right and the roof, gutters and chimney stacks repaired from the scaffold. We run it for an owner living in the house, or for an empty house bought dated, cleared for sale or handed to executors.

For Forest Hill, published UK figures put a three-bed house refurbishment at £43,530 to £110,350, and London houses usually cost more, with a London architect allowing £1,800 to £2,200 per square metre before VAT (Checkatrade and Bradley Van Der Straeten Architects, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Forest Hill: we renew the wiring, pipework, heating, plaster, floors and joinery of the whole house under one contract, and a registered electrician certifies the rewire.

The Victorian fabric behind a Forest Hill house refurbishment

A house built before 1919 needs repairing in the materials it was built with. In Forest Hill, 54% of homes predate 1919, most of them Victorian terraces and villas, many now divided into flats. Those houses have solid brick walls laid in lime mortar, lath and plaster ceilings and suspended timber ground floors ventilated by air bricks. Gypsum plaster or cement render on a solid wall holds damp against the brick, so we patch lime with lime and keep the air bricks clear. Cornices and ceiling roses in a villa are repaired in place rather than ripped out.

The 13% of Forest Hill homes built between the wars, and the houses among the 30% built after 1945, bring different jobs: cavity walls, original cable runs and metal or timber windows of their period. Whatever the age, the order of a whole house job stays the same. We strip out, run first fix wiring and pipework while the floors are up, plaster, second fix and then decorate. Joists, stair strings and boards are repaired as they are exposed, and anything found under the floor is photographed and priced before it is put right.

Housing in Forest Hill

About 11,040 homes are listed for Forest Hill, and the mix is 42% houses to 58% flats, with 30% built after 1945, 13% in 1919 to 1939 and 54% earlier. Where most homes in Forest Hill are flats, a whole house is refurbished as one building, with a single intake for the services and one roof to keep sound, which matters here because most homes are flats.

Conservation area and Article 4 rules on Forest Hill windows and roofs

Check whether your house sits in the Forest Hill conservation area before you choose windows, doors or roof coverings. It was originally designated in 1976 and extended in 1994 and in 2010, so the boundary has moved over time. Lewisham's Article 4 directions in conservation areas only apply to houses in use as a single dwelling house, which is the position of a family house being refurbished. Where a direction covers your house, Lewisham lists alterations to the roof and the addition of a porch, including infilling an open porch, among the changes that then need planning permission.

Repairing a sash like for like is the route that changes least on a Forest Hill elevation. Lewisham's Duty Planner Standard Service gives written advice on window replacement, including within a conservation area, and any planning application affecting a building in a conservation area needs a heritage statement, which the owner or their designer prepares. We ease and reglaze existing sashes, draught strip them, splice new timber into rotten sills and bottom rails, and have matching sashes made where a frame is past saving. Slate, lead and chimney stack repairs follow the survey.

Working hours, skips and scaffold on a Forest Hill street

The first weeks of a house refurbishment are loud, and Lewisham sets the hours for them. Noisy construction work is restricted to 8am to 6pm Monday to Friday and 8am to 1pm on Saturdays, with no work on Sundays or bank holidays. In a Forest Hill terrace, chasing walls for a rewire and hacking off blown plaster carry through the party wall, so we group those tasks into planned days and let the neighbours on both sides know before they begin.

Waste and access need paperwork before the first day on site. A skip standing on the road needs a Lewisham skip licence, and in a controlled parking zone it also needs a temporary parking suspension, applied for at least five working days ahead. Scaffold standing on the pavement for roof, gutter and chimney repairs needs a licence requested at least five days before it goes up. Where a Forest Hill house has a front garden deep enough, a skip or bulk bags can sit off the road, which avoids both permits and keeps the pavement clear.

Living in, selling or re-letting a Forest Hill house during the works

Whether you live in the house shapes the programme more than the scope does. With the family at home, we keep one bathroom and a working kitchen in use, rewire and replumb a floor at a time, and seal each floor behind dust screens. An empty Forest Hill house, bought dated or cleared for probate or sale, can be stripped out in one go, which shortens the programme and lets plastering run through every room together. Structural repairs to joists or beams, or moving a WC or bath, bring a Lewisham building control inspection either way.

Renewing an element of the house can bring Part L with it. Lewisham's building control inspectors check energy conservation as well as structure, so stripping a solid outside wall back to brick, re-covering a roof or relaying a ground floor can mean insulating it to current standards where that is practical. In a Forest Hill house that is usually settled before plastering, because insulated lining on a solid wall costs room depth and needs a breathable build up. A landlord re-letting the house can fold the EPC work into the same phase, while the rooms are empty.

• New boiler, cylinder and radiators sized to every room, fitted by a Gas Safe registered engineer
• Timber repairs where rot or beetle turns up at strip-out
• Panelled doors eased and rehung, skirtings and architraves pieced in to match

VOA Council Tax stock of properties, March 2025, for Forest Hill West, Forest Hill East and Honor Oak. Counts rounded by the VOA.

If you are weighing up house refurbishment in Forest Hill, it may help to read home renovation in Forest Hill, house refurbishment across Lewisham, a building contractor for a whole-house refurbishment, building control on a house refurbishment, our London house refurbishment page and What a Structural Survey Covers.

Trusted House Refurbishment in Forest Hill

A house refurbishment involves every trade, and the risk sits in the handovers between them. We run the sequence with our own trades, from strip out through first fix, plastering and second fix to decoration, and tell you ahead of time who will be in the house each week. We survey the house with you before quoting, and the written quotation separates what can be seen now from what opening up may reveal. A registered electrician certifies the rewire and an engineer on the Gas Safe Register does the gas work.

• Damp traced to its source before anyone suggests an injected course
• First fix cabling on each floor inspected by the electrician before the walls are closed
• Paperwork and certificates handed over for when you sell

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254).