Planning permission drawings, extensions, and loft conversions for Mottingham's 1930s semis and bungalows. MCIAT chartered, Greenwich and Bromley planning expertise built in.
Bromley or Greenwich — Mottingham sits on the boundary, and the two behave very differently. Bromley approved 79.8% of householder applications; Greenwich 70.7%, twelve points below the London average. The authority check comes before anything else. Bromley also holds 69 conservation areas against Greenwich's 14, so designation is far likelier on the Bromley side.
| Measure | Bromley | Greenwich |
|---|---|---|
| Householder approval rate | 79.8% | 70.7% |
| Householder decisions made | 4,706 | 2,301 |
| Decided inside eight weeks | 89.7% | 93.8% |
| Conservation areas | 69 covering 1,302 ha | 14 covering 884 ha |
| Lawful development certificates issued | 1,675 | 1,228 |
| Appeals allowed after refusal | 40.4% of 1,184 | 39.7% of 632 |
Sources: decision figures from MHCLG District Planning Application Statistics (PS1 and PS2), twelve quarters to March 2026; conservation areas from planning.data.gov.uk, retrieved 1 September 2026; appeals from Planning Inspectorate casework decided 2016–2026. Open Government Licence v3.0.
Local contextMottingham sits in the SE9 postcode, straddling the borough boundary between the Royal Borough of Greenwich and the London Borough of Bromley. The neighbourhood's inter-war housing stock makes it one of south-east London's consistent extension markets.
1930s semi-detached stock: Mottingham's inter-war semis typically have hipped roofs and generous rear gardens. Hip-to-gable loft conversions, 4–6m rear extensions, and two-storey side extensions are all common. Most fall within PD.
Bungalows: Mottingham has a stock of 1930s bungalows. Loft conversions to add a first floor are popular, as are garage conversions.
Cross-borough awareness: Properties on the Bromley side of Mottingham fall under Bromley Council; Greenwich side under the Royal Borough. We check your address early to ensure the application goes to the right authority.
Small CA: The Mottingham Conservation Area covers a small historic core. Within the CA, Article 4 Directions may apply.
Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Direct answers to the questions Mottingham homeowners ask us every week about planning, extensions, and loft conversions.
Start a free quoteIt depends on which side of the borough boundary your property sits. Greenwich Council covers the north; Bromley Council the south. We check the boundary early.
Often yes under PD subject to height, volume, and material rules. Alternatively, planning permission may be required. We assess and prepare.
Outside the small CA, rear extensions under PD or prior approval are straightforward. We prepare drawings and notifications.
Both councils target 8 weeks for householders and 13 for majors. We manage the full process for either authority.
We cover every London neighbourhood. Here are areas adjacent to Mottingham where we work regularly.
Every service you need for a Mottingham project, from a single chartered team.
Rear extensions, side returns, wraparounds, and basement feasibility for local housing stock.
Dormers, mansards, and Velux conversions designed for local roof profiles and planning constraints.
Construction-ready drawing packages compliant with all Approved Documents, submitted to local Building Control.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Free quote in 60 seconds. MCIAT chartered. Conservation area expertise included.
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