Greenwich
Loft Conversions in Eltham
Find out which loft conversion suits a Eltham house, what it should cost, and get quotes from specialists working locally.
Loft Conversions in Eltham
If you are thinking about converting the loft in Eltham, the first useful question is not who to call. It is what your roof will actually take. The type of conversion available to you is decided by the shape of the roof you already have, and that decides the cost, the planning position and how long it runs.
Eltham has extensive interwar estate housing along with some notable period buildings, and most of its lofts are the hipped-roof semi type. The estate housing is consistent, which works in an owner's favour. Where hundreds of houses share a roof design, the conversion route is well understood, the structural solution is repeatable, and quotes should be comparable. A hip-to-gable with a rear dormer is the usual answer, producing a double bedroom with room for an en-suite. Eltham falls within the Royal Borough of Greenwich, so planning and building control are Greenwich's responsibility and the local designations are theirs rather than Bromley's. The area also contains genuinely significant historic buildings and associated protected settings, which means conservation constraint is real in specific locations even though most of the residential stock is unaffected. Check the address rather than assuming from the road. For the bulk of Eltham's interwar housing, the practical sequence is the same as anywhere: confirm the roof structure, confirm the head height, then price the appropriate conversion. Because the estate housing repeats, a firm that has worked on your specific house type nearby will give you a tighter figure than one pricing it cold.
What Eltham Houses Usually Need
Eltham sits just outside the London Borough of Bromley, and its housing has more in common with the Bromley streets next to it than the boundary suggests. Most of the stock is interwar and postwar semi-detached, which means the same hipped roof shape and the same conversion options.
A hip-to-gable is the usual answer where there is a side roof slope to build up. A dormer on the rear does the work where there is not. Where the loft already has real head height, a rooflight conversion is far cheaper than either and worth pricing first.
Permitted development rules are national, so the 40 cubic metres for a terrace and 50 for a semi apply here as they do in Bromley. What differs is the local authority you deal with, and which conservation areas apply, so check your address with the council for Greenwich rather than assuming Bromley's map covers it.
Loft Conversions We Cover in Eltham
- Dormer, £45,000 – £70,000
- Hip to Gable, £55,000 – £80,000
- Mansard, £65,000 – £120,000
- L-Shaped Dormer, £60,000 – £90,000
- Bungalow, £50,000 – £85,000
- Velux & Rooflight, £28,000 – £38,000
Figures are estimates for guidance only, based on published 2026 ranges and prices advertised locally. Every loft is different. The only accurate number is a quote from a surveyor who has been up in yours.
Why Eltham Homeowners Start Here
We are Not Quoting You
We do not carry out the work, so we gain nothing from talking you into a bigger conversion than your roof needs. A building company quoting you is in a different position.
Specialists Who Cover Your Postcode
Your enquiry goes to loft conversion companies actually working in your part of the borough and currently taking work, not a national list.
Bromley Rules, Not National Boilerplate
Forty-seven conservation areas and an Article 4 direction that removes rights most guides assume you have. We cover what applies here.
Nothing Owed, Nothing Booked
Quotes are free and there is no obligation at any point. On a job this size, take two or three of them.
Get a Loft Conversion Quote in Eltham
Tell us about your house and what you want the loft for. We will pass it to loft specialists covering your area, and they will come back to you with a quote. No obligation, no pressure.
Nearby Areas We Cover
Loft Conversions Bromley is a matching service covering Greenwich. We do not carry out building work ourselves.