Extensions
Single & double-storey rear, side-return and wrap-around extensions — open-plan living that actually feels like part of the house.
- Structural steel & underpinning
- Bi-fold & roof-lantern glazing
- Party wall handling included
From£38,500
Extensions, loft conversions and full renovations — designed, costed and project-managed under one roof. One team, one fixed scope, one date you can trust.
Forge & Field is a design-and-build contractor. We draw it, cost it, build it and manage it — so you brief one team and sign one contract, not a chain of architects, surveyors and subbies who blame each other when the dates slip.
We don't chase every job. We specialise — which is exactly why our timelines hold and our finishes stand up to scrutiny.
Single & double-storey rear, side-return and wrap-around extensions — open-plan living that actually feels like part of the house.
Dormer, hip-to-gable and mansard conversions — turning dead roof space into a master suite, home office or guest room with ensuite.
Whole-house refurbishments and reconfigurations — rewires, replumbs, new kitchens & bathrooms, and structural reworks under one programme.
Every project runs the same disciplined route. You always know what's happening this week, what's next, and what it costs.
Free site visit. We measure up, listen to the brief and give an honest feasibility steer before you spend a penny.
Concept drawings, structural calcs and a fixed-scope quotation. Planning & Building Control handled in-house.
A locked start date and week-by-week schedule. Materials ordered, trades booked, site set up clean.
Directly-employed team on site daily, named project manager, weekly progress photos to your phone.
Joint snag walk, full sign-off pack, warranties and a 12-month aftercare call. We don't disappear.
A few of the builds we've handed over across Bristol, Bath and the South West.
They turned our cramped galley kitchen into a double-storey extension we genuinely use every day. Hit the date to the week and the snag list was three items. Three.
The fixed quote held even when we found dodgy joists. No drama, no surprise invoice — they'd allowed for it. The weekly photo updates kept us sane while we lived elsewhere.
We interviewed four builders. Forge & Field were the only ones who drew it, costed it and warned us about the planning risk up front. The finish on the period detailing is faultless.
Plain-English guidance on planning, budgets and what actually happens when you build.
What you can build without full planning permission in 2026 — and the traps that catch homeowners out.
A line-by-line look at a £60k rear extension — and why the cheapest quote is rarely the cheapest job.
Head height, roof pitch, staircases — the five-minute checklist for whether a conversion is viable.
Book a free, no-obligation site visit. We'll tell you what's possible, what it'll cost and when we could start — straight, no sales pitch.