Areas / Lewisham
Architects in Lewisham
From the Victorian terraces of Brockley, Ladywell and Hither Green to the interwar cottage estates of Bellingham and Downham, Lewisham homes are typically extended at the rear and in the loft.
RIBA Chartered Practice · ARB-registered architects · Extensions, lofts and planning drawings
- FreeInitial consultationA conversation about your project, and a first view of what's possible, before any fee is agreed.
- FixedFee for each stageEvery stage is priced in writing before it starts. No hourly billing.
- 3DSee the design firstYour design is shown in 3D before it's submitted, while changes are still easy.
- FreeResubmissionIf planning is refused, we revise and resubmit at no extra design fee. Conditions
Local planning points
Planning in Lewisham
Checked October 2026. Planning policy changes, so we confirm the position for your address before you commit.
Single-storey rear extensions should generally be no more than 3m deep on terraced and semi-detached houses (Alterations and Extensions SPD, 2019).
SourceRear dormers should be set in at least 0.3m from the party wall on each side, at least 0.3m below the ridge and at least 0.3m above the eaves; front dormers are normally resisted.
SourceBasements should generally be one storey deep, no wider than the original house, and extend no more than 3m from the original rear wall or a quarter of the original garden length, whichever is less.
SourceConverting a house to a small HMO needs planning permission across the whole borough: an Article 4 direction has applied in the southern wards since 7 March 2020 and in the rest of the borough since 19 January 2024.
SourceThe council lists 29 conservation areas, including Brockley, Blackheath, Forest Hill, Lee Manor, Ladywell and Telegraph Hill.
SourceSelective licensing has applied since 1 July 2024 to nearly all privately rented homes in the borough; some areas, such as Telegraph Hill and parts of Blackheath, are not included.
Source
Postcodes
Lewisham by postcode
4,969 postcodes in 14 postcode districts, 11.9 miles from our studio in Cricklewood.
- BR121% in Lewisham
- SE318% in Lewisham
- SE4all in Lewisham
- SE6all in Lewisham
- SE882% in Lewisham
- SE93% in Lewisham
- SE106% in Lewisham
- SE1275% in Lewisham
- SE13all in Lewisham
- SE14all in Lewisham
- SE153% in Lewisham
- SE165% in Lewisham
- SE23all in Lewisham
- SE2676% in Lewisham
Where a postcode district is shared, neighbouring streets can fall under a different council. The checker below gives the answer for an exact postcode.
Council-wide figures from public planning records, not our own results. Every application is judged on its own merits.
Postcode checker
Which council decides your application?
Type any postcode in the 33 London boroughs we cover. We'll tell you which council handles planning there and show you the local planning points.
Services
What we draw in Lewisham
- House extensions
- Loft conversions
- Basement conversions
- Planning permission
- Building regulations drawings
- Structural calculations
- Flat conversions
- Change of use
- New builds
- Interior design
Neighbourhoods we cover include Deptford, New Cross, Brockley, Catford, Forest Hill and Sydenham.
Neighbouring councils: Greenwich, Bromley, Southwark, Bexley, Croydon.