Extension architects in St Helens
53 architects and planning agents with extension planning history in St Helens, ranked by how many applications they’ve filed — with their approval rate — straight from public council records.
- RJG Architecture LTDLoft conversion · Rear extension · Side extension · Extension · Basement30 in St Helens86% approved
- RJG Architecture LtdLoft conversion · Rear extension · Side extension · Extension · New dwelling21 in St Helens94% approved
- Lawrenson AssociatesLoft conversion · Rear extension · Side extension · Extension · New dwelling13 in St Helens100% approved
- Keith Swain DesignRear extension · Side extension · Extension · Change of use · Shopfront / commercial10 in St Helens86% approved
- msa ArchitectsRear extension · Side extension · Extension · New dwelling · Outbuilding / garden room9 in St Helens88% approved
- MSA ArchitectsRear extension · Extension · New dwelling · Outbuilding / garden room · Porch7 in St Helens83% approved
- MAT Design LtdRear extension · Extension · New dwelling · Change of use · Conservatory / orangery5 in St Helens75% approved
- MSARear extension · Extension · Porch · Roof / fenestration5 in St Helens100% approved
- Schafer AssociatesRear extension · Side extension · Extension · Listed building / conservation · Demolition5 in St Helens100% approved
- Taurus Design ServicesRear extension · Side extension · Extension · Outbuilding / garden room · Garage conversion5 in St Helens100% approved
- Bernard Taylor Partnership LtdExtension4 in St Helens100% approved
- O'Rourke-DesignsRear extension · Side extension · Extension · Porch4 in St Helens100% approved
- ArchitecturalPLANSSide extension · Extension · Garage conversion · Demolition3 in St Helens— approved
- Goldcrest Design Services LtdLoft conversion · Rear extension · Extension · Garage conversion · Porch3 in St Helens100% approved
- ABF Design and ConsultancyRear extension · Extension · Demolition2 in St Helens— approved
- ARNI Architects LtdLoft conversion · Rear extension · Side extension · Extension · Conservatory / orangery2 in St Helens— approved
- Diogel ArchitectureRear extension · Side extension · Extension2 in St Helens— approved
- GBM DesignExtension2 in St Helens— approved
- Halsall Lloyd PartnershipExtension2 in St Helens— approved
- Irvin ConsultantsRear extension · Extension2 in St Helens— approved
- M F Architecture LtdRear extension · Side extension · Extension · Change of use · Shopfront / commercial2 in St Helens— approved
- MAT DesignRear extension · Extension · Conservatory / orangery · Demolition2 in St Helens— approved
- MAT DESIGN LIMITEDLoft conversion · Extension2 in St Helens— approved
- N Robinson Design LtdRear extension · Extension · Conservatory / orangery2 in St Helens— approved
- PKL Chartered Building ConsultancyLoft conversion · Rear extension · Extension · New dwelling · Conservatory / orangery2 in St Helens— approved
- Pro-Plan ProjectsExtension · Garage conversion · Porch2 in St Helens— approved
- Pye DesignRear extension · Extension · Demolition2 in St Helens— approved
- Structure Up LimitedRear extension · Side extension · Extension · Demolition2 in St Helens— approved
- Whiteleyeaves LtdRear extension · Side extension · Extension · Conservatory / orangery · Demolition2 in St Helens— approved
- 27 ProjectsRear extension · Extension1 in St Helens— approved
- Absolute Services Group LtdRear extension · Extension1 in St Helens— approved
- ADS StructuralExtension1 in St Helens— approved
- AJ ArchitecturalRear extension · Extension1 in St Helens— approved
- Architectural Solutions LtdRear extension · Side extension · Extension · Conservatory / orangery · Demolition1 in St Helens— approved
- Athtech DesignsRear extension · Extension1 in St Helens— approved
- Baltik ArchitectureRear extension · Extension1 in St Helens— approved
- BlueChip Architecture LtdRear extension · Extension · Demolition1 in St Helens— approved
- Concise Architectural Design ServicesRear extension · Extension · Conservatory / orangery · Demolition1 in St Helens— approved
- Devlin Architects LtdSide extension · Extension · Outbuilding / garden room · Demolition1 in St Helens— approved
- Draw Plan LtdRear extension · Extension · Change of use1 in St Helens— approved
- Euan Kellie Property SolutionsExtension · Change of use · Demolition1 in St Helens— approved
- Evergreen ArchitectsExtension · Demolition1 in St Helens— approved
- Future 3 ArchitectureRear extension · Extension · Demolition1 in St Helens— approved
- Gary MorrisRear extension · Extension · Demolition1 in St Helens— approved
- Gateway Build & Design LtdRear extension · Extension · Porch1 in St Helens— approved
- Halliday Meecham ArchitectsExtension1 in St Helens— approved
- Joe AthertonRear extension · Extension1 in St Helens— approved
- Keenan Project Designs LtdExtension1 in St Helens— approved
- Lancaster MaloneyExtension1 in St Helens— approved
- LK Planning & DesignRear extension · Extension · Outbuilding / garden room · Demolition1 in St Helens— approved
- MAT DESIGNRear extension · Side extension · Extension1 in St Helens— approved
- McGovern Architectural DesignRear extension · Extension · Conservatory / orangery1 in St Helens— approved
- MDA Design LtdExtension1 in St Helens— approved
Other work in St Helens
All architects in St HelensRear extensionDemolitionChange of useSide extensionConservatory / orangeryPorchLoft conversionNew dwellingOutbuilding / garden roomGarage conversionListed building / conservationShopfront / commercial
Based on public planning-application records. Volume and approval rate reflect filed applications, not a quality judgement — always confirm credentials and references before you hire.