London Connection1SMARTePLANS®
- Address
- 167-169 Great Portland Street, London, W1W 5PF
- Phone
- +44 8006122067
- Website
- smarteplansuk.com
- Opening hours
- Mon-Fri 09:00-17:00
Best Architects in Westminster, London
Architects in Westminster design extensions, loft conversions, new homes and commercial projects, and manage planning applications. Below you will find our selection of 8 architects in Westminster, with address, phone number, website and opening hours for each one, followed by practical advice on choosing the right architect, typical prices and answers to common questions.
8listed
2with phone number
6with website
8 Architects in Westminster
2Royal Institute of British Architects
- Details
- Wheelchair accessible
- Address
- 66-68 Portland Place, London, W1B 1AD
- Website
- architecture.com
- Opening hours
- Mon 08:00-17:30 · Tue 08:00-20:00 · Wed-Fri 08:00-17:45 · Sat 10:00-17:00
3Hodgkinson Design
- Address
- 29 Alexander Street, London
- Phone
- +44 20 7221 7557
- Website
- hodgkinson-design.co.uk
4Studio Ashby
- Address
- Blewcoat School, 23 Caxton Street, London, SW1H 0PY
- Website
- studioashby.com
5Darling Associates Architects
- Address
- 1 Greencoat Street, London, SW1P 1DH
- Website
- darlingassociates.net
63DReid
- Address
- West End House, Hills Place, London
- Website
- 3dreid.com
7Elysium Diem
- Address
- 20 Blenheim Terrace, London
8Ayad Al-Tuhafi ltd
- Address
- 60 Upper Montagu Street, London
How to choose an architect in Westminster
- Only people registered with the ARB can call themselves architects.
- Look at completed projects in similar properties.
- Agree the RIBA stages and fees in writing.
- Ask about experience with Westminster council planning and conservation areas.
Checks and regulation: Architects must be registered with the Architects Registration Board (ARB).
How much does an architect cost in Westminster?
Architects typically charge 8%–15% of construction cost for a full service, or fixed fees for planning drawings. Prices vary by area, time of day and the complexity of the job or service, so always ask for a written quote or check the latest price list before you book.
Architects across Westminster
Westminster covers neighbourhoods such as Mayfair, Soho, Marylebone, Covent Garden, Pimlico, Belgravia, St James's, Paddington (postcodes W1, W2, W9, NW8, SW1, WC2). The architects listed on this page are located in or around W1W, W1B, SW1H, SW1P. Getting around is easy thanks to almost every Tube line, the Elizabeth line, and mainline stations at Victoria, Paddington, Charing Cross and Marylebone. If you live close to the borough boundary, it is worth comparing options in neighbouring boroughs too.
Architects in nearby boroughs
Frequently asked questions
Do I need an architect for an extension?
Not legally, but an architect can improve design and your chances of getting planning permission.
How long does planning permission take in Westminster?
Householder applications usually take eight weeks after validation.
What is the difference between RIBA and ARB?
ARB is the legal regulator; RIBA is a professional membership body.
Listings are compiled from public business information and OpenStreetMap (© OpenStreetMap contributors, ODbL). Details can change, so please confirm opening hours and prices with the business before visiting. Businesses can request corrections via our contact page. Last reviewed: September 2026.