Walthamstow · E17 · E10 · Waltham Forest
House extensions, loft conversions and full renovations for E17's Victorian terraces and Edwardian semis. Waltham Forest planning, party wall and Building Regulations handled — under a written JCT contract with staged payments.
Walthamstow's housing stock rewards builders who know it: steep-pitched Victorian terraces off Hoe Street and Wood Street that suit rear dormers, Edwardian semis towards Lloyd Park built for hip-to-gable conversions, and the Walthamstow Village Conservation Area where the planning rules change completely. We know what Waltham Forest Council approves and what it refuses.
Whether you are extending the kitchen, converting the loft or renovating the whole house, you get the same process: a free survey, a plain-English assessment of what your house allows, and an itemised quote under a written JCT contract.
Indicative ranges for E17. Every house is different — a free site survey gives you an accurate, itemised figure.
Want a personalised range first? Try our free Extension Cost Calculator or Loft Conversion Cost Calculator.
We assess your house, confirm which project types it supports, and check whether you fall in an Article 4 or conservation area.
Drawings, structural calculations and either a Certificate of Lawfulness or a full planning application to Waltham Forest Council, managed for you.
Party Wall Notices served on neighbours at least two months before work starts. Building Control applications and inspections handled throughout.
Work runs under a written JCT contract with staged payments tied to milestones. We finish with a full snagging walkthrough.
Leave your details and we will send you honest advice on what your house allows and what it should cost. No obligation, no pressure.
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House extensions (rear, side return and wraparound), loft conversions (dormer, L-shaped, hip-to-gable and mansard) and full house renovations — for the Victorian terraces and Edwardian semis that make up most of E17's housing stock. We work regularly in E17, E10 and across Waltham Forest.
Ask for references from completed projects in E17 or E10 specifically — not just "London". Confirm public liability insurance, insist on a written JCT contract for anything over £5,000, and never pay more than 20% upfront. Payment should be staged against completed milestones, not calendar dates.
Yes. We manage Waltham Forest planning applications and Certificates of Lawfulness, serve party wall notices, and run Building Control applications and inspections as part of every project.
Typical 2026 ranges: a rear dormer loft £45,000–£70,000, an L-shaped dormer £60,000–£80,000, and extensions from £2,000–£2,600 per sqm at standard spec rising to £3,400+ per sqm at high spec. Every house is different — a free survey gets you an itemised figure.
Three comparable, itemised quotes is the standard advice — comparable being the key word. Make sure each builder is pricing the same drawings and specification, otherwise the numbers tell you nothing. Read our guide on comparing quotes before you decide.
Want the deep dive? Read our guide to choosing a builder, the guide to comparing quotes and our Walthamstow loft conversions page.
Free survey, honest advice, no pressure. If the numbers do not stack up for your house, we will tell you.
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