Our office is on High Road, Willesden, so NW10 is home. We design and build rear, side return and wraparound extensions across Willesden, Willesden Green, Harlesden and Dollis Hill.
Quality Workmanship
Detail-driven, clean, and built to last.
Honest
Pricing
Transparent quotes, clear communication.
Professional
Team
Experienced, respectful, and always on time.
Results That Increase Value
Renovations designed to improve your home, lifestyle, and property value.
Your Local Extension Builders in Willesden
Arkivon Group is based at 136 High Road, Willesden, so we know the streets of NW10 well. Willesden and Willesden Green are mostly Victorian and Edwardian terraces, with interwar semis towards Dollis Hill and Neasden. Being local means quicker surveys, a project manager who is never far away, and less disruption for you.
Planning in Willesden (Brent Council)
Willesden is in the London Borough of Brent, which decides householder applications and checks larger permitted development schemes through prior approval.
Terraced houses
Many single-storey rear extensions on terraces can go ahead under permitted development, subject to national size limits.
Conservation areas
Nearby streets in Mapesbury and Queen's Park are conservation areas, where design and materials are assessed more closely.
Flats
Converted flats, common in Willesden Green, need full planning permission because they have no permitted development rights.
We check your address against Brent's conservation area maps and the property's planning history before design, so the right route is chosen from day one.
Extensions That Suit Willesden Homes
Victorian terraces
A side return or wraparound extension that turns a narrow kitchen into a bright, open family space.
Interwar semis
A full-width rear extension towards Dollis Hill and Neasden, often combined with a hip-to-gable loft.
Ground floor flats
A rear extension with full planning and freeholder consent, designed around the flat above.
Because we are based in NW10, we can visit quickly, meet your neighbours about party wall matters and keep a close eye on the build every day.
Recent Extension Projects
Extension work completed by our own team across North West London.
How Long Does an Extension in Willesden Take?
Design and approvals
Design, permitted development checks or a householder application to Brent Council, structural design and party wall.
Build on site
A typical rear or side return extension from foundations to finished room, managed from our Willesden office.
We also work in nearby West Hampstead, Queens Park, Wembley, Golders Green. See house extension costs in London.
House Extensions in Willesden: Questions
Are you really based in Willesden?
Yes. Our office is at 136 High Road, London NW10 2PJ, so Willesden is our home area.
Which council handles planning in Willesden?
Brent Council. We prepare and submit the application or the permitted development checks for you.
Do you also cover Harlesden, Dollis Hill and Neasden?
Yes. We work across NW10 and NW2, including Willesden Green, Harlesden, Dollis Hill, Neasden and Kensal Rise.
Can I extend a flat in Willesden Green?
Usually yes, with full planning permission and the freeholder's consent. We help with both.
Loft conversions in Willesden · Kitchen extensions in Willesden · All building services in Willesden
Planning an extension in Willesden?
Book a free survey and get a clear, fixed quote.
Ready to Transform Your Property?
Whether you're planning a renovation, extension, loft conversion, or full refurbishment, our team is here to help. We provide clear advice, transparent pricing, and professional project management from start to finish.
Contact Details:
Email: info@arkivongroup.co.uk
Call / WhatsApp: 07754 690740
Office Line: 020 8830 9702