House Extensions
Rear, wrap and side-return extensions to open up period layouts.
Typical: from £58,000
Areas we cover
Extensions, loft conversions and full refurbishments for homes in Muswell Hill, Crouch End, Hornsey and Wood Green — with planning handled and fixed pricing.
Experienced with N8 / N10 access & parking constraints
Ideal for period terraces and conservation homes
We’ll call you back today with costs & next steps.
Design & build for Muswell Hill, Crouch End and Wood Green homes.
Rear, wrap and side-return extensions to open up period layouts.
Typical: from £58,000
Dormer and mansard lofts for North London terraces.
Typical: from £45,000
Whole-house modernisations with rewires, bathrooms and bespoke finishes.
POA after survey
We assess access, confirm PD rules & issue a fixed proposal.
Book nowWe handle every step — from planning and design to project delivery — giving North London clients peace of mind and clear timelines.
*Depends on access, spec and structure.
These are real Forge Build projects in London. Click to view full details on our projects page.
We can confirm costs, scope and programme in a quick call.
Yes. We regularly submit to Haringey Council for rear/side extensions and dormers in Muswell Hill, Crouch End, Alexandra Park and conservation pockets. We’ll tell you early if you need full planning.
Yes. After a site visit we issue a fixed-price, itemised proposal with a clear programme and milestone payments — so you can phase the refurb if needed.
We do. Most of our North London work is terraced/sashed stock — we design around drainage, neighbour access and party wall requirements.
Not listed? Call us to check: 020 3355 6146