Looking for a professional house extension in East Finchley? Fixiz Ltd delivers high-quality house extensions across East Finchley (N2) and the wider Barnet area — with fixed-price quotes, an in-house team, and full Building Regulations sign-off. We know the local housing stock and planning landscape, so your project runs smoothly from survey to completion.
Why choose Fixiz for your House Extension in East Finchley?
East Finchley has a real mix of period and modern homes, and a house extension is one of the most cost-effective ways to add space and value here. Our Barnet projects are managed end to end by our own tradespeople — better quality control, clearer communication, and no subcontractor surprises. Every job comes with a transparent fixed price after a free site survey.
Planning permission for a House Extension in East Finchley
Most projects in East Finchley fall under permitted development, provided the work stays within the existing footprint and rules. Building Regulations approval is always required, and we handle the full submission and sign-off.
What does a House Extension cost in East Finchley?
Your price is confirmed as a fixed quote after a free site survey — no hidden costs. As a guide, most house extensions in East Finchley are shaped by size, specification and finish. See our full House Extension cost guide for detailed 2026 ranges, or request a fixed quote for your property.
Areas we cover near East Finchley
As well as East Finchley (N2), we carry out house extensions in Fortis Green, Muswell Hill and Highgate and right across Barnet and North London.
FAQ — House Extension in East Finchley
Do I need planning permission for a house extension in East Finchley?
Often not — many East Finchley projects are permitted development, but Building Regulations approval is always required. We confirm your exact position at survey stage.
How long does a house extension take in East Finchley?
Most projects run from a few weeks to a few months depending on scope. We give you a clear programme with your fixed-price quote.
Will it add value to my East Finchley home?
Yes — a well-built, properly certified house extension typically adds significant value and saleability to homes in East Finchley and Barnet.
Do you handle Building Regulations?
Yes. We manage all Building Regulations applications and inspections and provide the completion certificate you will need when you sell.
Ready to start your house extension in East Finchley? Learn more about our House Extension service or get in touch with Fixiz today for a free, no-obligation quote.

