House Extensions in Blackheath
Rear and side-return extensions for Blackheath homes, from a builder based in SE3.
Extensions in Blackheath often mean opening up the back of a Victorian or Georgian house into a bright kitchen and living space, while keeping the character that makes the area special.
Being based in Blackheath, we know the local streets, the conservation rules and what the councils tend to accept.
Recent local work
St John's Park Residential Project
A full residential refurbishment of a family home in St John's Park. Heath Projects reconfigured the internal layout, upgraded services throughout and delivered bespoke joinery, new bathrooms and a refined material palette of Venetian plaster, natural oak and limestone. Steel-framed glazing and considered landscaping connect the interior with the garden, producing a warm, contemporary home tailored to how the family actually lives.
Humber Road Project
Side extension and complete refit of the back of the house at ground floor level and renewal of a 1st floor bathroom. Works included new steelwork, new concrete floors incorporating underfloor heating, new party wall to neighbouring property, rooflights and complete reneal of all mechanical and electrical services.
Kidbrooke Gardens Project
Major refurbishment of substantial family home including a new two storey rear extension within a conservation area.
Hardy Road Project
Extensive strip out of 4,500ft family home in phases. New ground floor rear extension and complete refit of house including new roof, new windows complete renewal of mechanical and electrical services and total refit of house while retaining original features of the property
Westcombe Park Road Project
Loft conversion project to create new bedroom and bathroom in previous loft space within Blackheath conservation area.
Planning and conservation in Blackheath
- The Blackheath Conservation Area spans Greenwich and Lewisham councils — we check which one covers your house.
- Single-storey rear extensions are often allowed under permitted development, but conservation-area rules can reduce what's allowed, especially for side extensions.
- Materials such as London stock brick and slate usually need to match the existing house.
- Party wall notices are common for side-return and rear extensions on terraces.
General guidance only — your council has the final say, and we confirm the route for your house at the site visit.
Timeline
- 1
Free site visit
We look at the house, talk through what you want and check the planning route.
- 2
Detailed costing
A clear cost plan and drawings, so you know where the money goes.
- 3
Approvals
Planning or permitted development, building control and party wall notices.
- 4
Around 10 weeks on site
A typical project, run by one contracts manager and one site manager.
- 5
Handover
Snagging closed out, certificates issued, house ready to use.
What our clients say
Heath Projects’ overall Google rating: 5/5 from 9 reviews
katy S.
2 months ago
Really happy with Heath Projects! Great service, lovely guys and they did a brilliant job. Would definitely recommend!
Fin H.
2 months ago
We had a great experience with this company adding an extension and refurbishing our conservatory. The staff were good, knowledgeable and communicated the whole process. Would definitely recommend...
Harriet B.
2 months ago
Heath Projects were professional and the work was completed to a very high standard.
Frequently Asked Questions
Other local services
- Loft Conversions in Blackheath
- Loft Conversions in Greenwich
- House Extensions in Lewisham
- House Extensions in Bromley
- Builders in Blackheath
- All residential services
Free site visit and detailed costing
Tell us about your house in Blackheath and what you'd like to do — we'll come back with a clear plan and cost.
Start Your Project