Extension architects in Westminster
At least 78 architects and planning agents in Westminster that have handled extension work, ranked by their total application volume there across all work types, with their council-wide approval rate, straight from public council decisions. Showing the top 78.
- Gerald Eve LLPLoft conversion · Rear extension · Extension · Basement · New dwelling394 total in Westminster97% approved
- NewmarkLoft conversion · Rear extension · Extension · Basement · New dwelling225 total in Westminster97% approved
- SavillsLoft conversion · Rear extension · Side extension · Extension · Basement204 total in Westminster90% approved
- dp9Loft conversion · Rear extension · Side extension · Extension · Basement171 total in Westminster96% approved
- Dp9 LtdLoft conversion · Rear extension · Side extension · Extension · Basement165 total in Westminster88% approved
- Montagu Evans LLPLoft conversion · Rear extension · Extension · Basement · Change of use130 total in Westminster96% approved
- Rolfe Judd PlanningRear extension · Extension · Basement · Change of use · Conservatory / orangery127 total in Westminster96% approved
- TurleyLoft conversion · Rear extension · Extension · Basement · New dwelling109 total in Westminster98% approved
- Gerald EveLoft conversion · Rear extension · Side extension · Extension · Basement98 total in Westminster100% approved
- FirstplanLoft conversion · Rear extension · Side extension · Extension · Basement92 total in Westminster75% approved
- DP9 LimitedLoft conversion · Rear extension · Side extension · Extension · Basement74 total in Westminster93% approved
- Montagu EvansRear extension · Side extension · Extension · Basement · Change of use73 total in Westminster91% approved
- Cbre LtdExtension · Basement · New dwelling · Change of use · Listed building / conservation71 total in Westminster100% approved
- Howard de Walden EstateLoft conversion · Extension · Basement · Listed building / conservation · Shopfront / commercial54 total in Westminster97% approved
- Jones Lang LaSalle LimitedLoft conversion · Extension · Basement · Change of use · Listed building / conservation51 total in Westminster65% approved
- Newmark Gerald Eve LLPExtension · Basement · Listed building / conservation · Shopfront / commercial · Demolition45 total in Westminster100% approved
- PurcellExtension · Basement · Listed building / conservation · Shopfront / commercial · Demolition40 total in Westminster100% approved
- hgh consultingLoft conversion · Rear extension · Extension · Basement · Change of use40 total in Westminster95% approved
- Planning Potential Ltd.Rear extension · Extension · Basement · Change of use · Conservatory / orangery38 total in Westminster89% approved
- The Planning LabRear extension · Extension · Basement · Listed building / conservation · Shopfront / commercial36 total in Westminster100% approved
- Jones Lang LasalleExtension · Basement · Listed building / conservation · Shopfront / commercial30 total in Westminster100% approved
- Clinch DesignRear extension · Extension · Basement · Change of use · Conservatory / orangery30 total in Westminster60% approved
- BDPExtension · Listed building / conservation · Demolition29 total in Westminster100% approved
- Savills (UK) LimitedExtension · Basement · Listed building / conservation · Shopfront / commercial · Demolition29 total in Westminster83% approved
- LichfieldsExtension · Basement · New dwelling · Listed building / conservation · Demolition28 total in Westminster88% approved
- Phillips Planning Services LimitedLoft conversion · Extension · Basement · Listed building / conservation · Shopfront / commercial26 total in Westminster87% approved
- 4d planningLoft conversion · Extension · Basement · Change of use · Listed building / conservation26 total in Westminster86% approved
- Iceni ProjectsRear extension · Extension · Basement · Listed building / conservation · Demolition25 total in Westminster89% approved
- Marek Wojciechowski ArchitectsLoft conversion · Rear extension · Side extension · Extension · Basement24 total in Westminster88% approved
- Garnett Architecture LLPLoft conversion · Rear extension · Extension · Basement · Listed building / conservation24 total in Westminster100% approved
- Pegasus GroupRear extension · Extension · Basement · Change of use · Outbuilding / garden room24 total in Westminster85% approved
- Aha - Alexander Hobbs AssociatesLoft conversion · Rear extension · Extension · Basement · Outbuilding / garden room23 total in Westminster64% approved
- Feilden+Mawson LLPRear extension · Extension · Basement · Porch · Listed building / conservation22 total in Westminster81% approved
- Wolff ArchitectsLoft conversion · Rear extension · Extension · Basement · Listed building / conservation22 total in Westminster92% approved
- Donald Insall AssociatesExtension · Listed building / conservation22 total in Westminster75% approved
- ADL Planning Pty LtdLoft conversion · Rear extension · Extension · Basement · Listed building / conservation21 total in Westminster86% approved
- Peek Architecture LtdRear extension · Extension · Basement · Outbuilding / garden room · Porch21 total in Westminster83% approved
- Patalab ArchitectsRear extension · Extension · Conservatory / orangery · Listed building / conservation · Shopfront / commercial18 total in Westminster80% approved
- Avison YoungRear extension · Extension · Basement · Listed building / conservation · Shopfront / commercial17 total in Westminster100% approved
- Rapleys LLPExtension · Change of use · Listed building / conservation · Demolition17 total in Westminster100% approved
- Logic PlanningRear extension · Extension · Basement · Change of use · Listed building / conservation17 total in Westminster78% approved
- Q Square Group LtdLoft conversion · Rear extension · Extension · Basement · Listed building / conservation17 total in Westminster100% approved
- Rolfe Judd Planning LtdExtension · Basement · New dwelling · Listed building / conservation · Demolition17 total in Westminster75% approved
- NTA Planning LLPRear extension · Side extension · Extension · Basement · Change of use16 total in Westminster100% approved
- Jon Dingle LtdRear extension · Side extension · Extension · Basement · Listed building / conservation16 total in Westminster83% approved
- Leigh & Glennie LtdLoft conversion · Rear extension · Extension · Basement · Change of use16 total in Westminster50% approved
- WSPExtension · Basement · Listed building / conservation15 total in Westminster100% approved
- Redmond Ivie ArchitectsLoft conversion · Rear extension · Extension · Basement · New dwelling15 total in Westminster71% approved
- Knight frankLoft conversion · Extension · Conservatory / orangery · Listed building / conservation14 total in Westminster100% approved
- London Borough of CamdenRear extension · Side extension · Extension · Basement · New dwelling14 total in Westminster89% approved
- Lewis Stroud Architects LtdExtension · Basement · Conservatory / orangery · Listed building / conservation · Roof / fenestration14 total in Westminster100% approved
- Forward Planning and DevelopmentRear extension · Extension · Basement · Listed building / conservation · Demolition14 total in Westminster100% approved
- Maddox PlanningRear extension · Extension · Basement · New dwelling · Listed building / conservation14 total in Westminster100% approved
- Martin Evans ArchitectsLoft conversion · Extension · Basement · Porch · Listed building / conservation13 total in Westminster91% approved
- Moreno Masey Architecture StudioExtension · Porch · Listed building / conservation13 total in Westminster69% approved
- Blair Associates Architecture LtdExtension · Basement · Listed building / conservation · Shopfront / commercial · Demolition13 total in Westminster100% approved
- Howard de Walden Estates ltdRear extension · Extension · Basement · Change of use · Listed building / conservation13 total in Westminster100% approved
- BB partnershipLoft conversion · Rear extension · Side extension · Extension · Basement13 total in Westminster67% approved
- MSMR architectsRear extension · Extension · Basement · Listed building / conservation · Demolition12 total in Westminster82% approved
- Donald Shearer ArchitectsLoft conversion · Rear extension · Extension · Basement · Outbuilding / garden room11 total in Westminster100% approved
- Centro Planning ConsultancySide extension · Extension · Basement · Change of use · Listed building / conservation11 total in Westminster75% approved
- City of LondonExtension · Basement · New dwelling · Listed building / conservation · Demolition10 total in Westminster100% approved
- Maddox and Associates LtdExtension · Listed building / conservation · Roof / fenestration10 total in Westminster100% approved
- Rodic Davidson ArchitectsLoft conversion · Extension · Basement · Listed building / conservation10 total in Westminster100% approved
- Frankham Consultancy GroupExtension · Garage conversion · Listed building / conservation · Roof / fenestration10 total in Westminster100% approved
- Lambeth PlanningExtension · Basement · New dwelling · Listed building / conservation · Demolition10 total in Westminster100% approved
- Daniel Watney LLPRear extension · Extension · Basement · Listed building / conservation · Shopfront / commercial10 total in Westminster86% approved
- Cohanim ArchitectureLoft conversion · Extension · Basement · Conservatory / orangery · Listed building / conservation10 total in Westminster71% approved
- Planning InsightRear extension · Extension · Basement · Listed building / conservation · Roof / fenestration10 total in Westminster50% approved
- Formation ArchitectsExtension · Basement · Listed building / conservation · Demolition · Roof / fenestration9 total in Westminster100% approved
- Rok PlanningExtension · Basement · New dwelling · Listed building / conservation · Demolition9 total in Westminster100% approved
- Hugh Cullum Architects LtdLoft conversion · Side extension · Extension · Listed building / conservation · Roof / fenestration9 total in Westminster57% approved
- Future Planning and DevelopmentExtension · Basement · Listed building / conservation9 total in Westminster100% approved
- Atomik ArchitectureExtension · Basement · Listed building / conservation9 total in Westminster43% approved
- Boundary Space Ltd.Extension · Listed building / conservation · Roof / fenestration9 total in Westminster
- BBpartnershipExtension · Basement · Conservatory / orangery · Listed building / conservation8 total in Westminster100% approved
- Lambert Smith HamptonExtension · Basement · Listed building / conservation8 total in Westminster100% approved
- Michaelis Boyd AssociatesLoft conversion · Rear extension · Extension · Basement · Listed building / conservation8 total in Westminster100% approved
Other work in Westminster
All architects in WestminsterListed building / conservationBasementRoof / fenestrationDemolitionShopfront / commercialRear extensionLoft conversionChange of useConservatory / orangeryNew dwellingSide extensionOutbuilding / garden roomPorch
Based on public planning applications. Volume and approval rate reflect filed applications, not a quality judgement. Always confirm credentials and references before you hire.