Loft conversions
Dormer, Velux and roof-light schemes — expand upstairs without losing your garden. Structure, insulation, stairs and decoration handled as one job.
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London building specialists
Eastcoast Works Ltd is the contractor homeowners and landlords turn to for extensions, loft conversions, refurbishments and new-build work — with clear pricing, one point of contact, and workmanship you can inspect before you pay the final balance.
We specialise in loft conversions, house extensions, home refurbishment, flat conversions and new builds. If you need a builder in North London, East London, Central London or nearby parts of Essex, we will tell you honestly whether we are the right fit and when we can start.
From kitchen extensions to dormer lofts, we have delivered disciplined, well-run projects since 2020. Our reputation comes from showing up, sticking to agreed scope, and finishing to a standard we are willing to put our company name against.
Eastcoast Works Ltd offers a single pathway through your build so you are not chasing five different firms. We coordinate structure, first and second fix, and finishing trades under one programme — and you can reach your dedicated project lead in person, by email or by phone throughout.
That structure saves time and reduces the small misunderstandings that inflate cost. Below are the five main service groups we are most often commissioned for. If yours is not listed, contact us — we still may be able to help or point you in the right direction.
Dormer, Velux and roof-light schemes — expand upstairs without losing your garden. Structure, insulation, stairs and decoration handled as one job.
More infoMore space without moving. Rear, side-return and wrap-around options; we help you choose what earns its cost for your street and lifestyle.
More infoWhole-house renewal or targeted rooms — kitchens, bathrooms, decoration. Designers and decorators aligned to your brief and budget.
More infoSmarter floor plans and compliant splits for landlords and investors — maximising rentable space where regulations allow.
More infoQualified to take a new dwelling from groundworks to completion — staged payments, snagging lists and documented handover.
More infoWhy settle for less than a builder who answers the phone?
Full building services for most London homeowners within our coverage area. Unsure? Send a short email.
Contact usA snapshot of the types of schemes we deliver — locations illustrative of our London footprint. See the full portfolio for more examples.
Extension, renovation & landscaping
Side return extension
Extension, renovation & landscaping
Rear extension & home renovation
Rear extension & renovation
We are judged on how we behave on site as much as on the final photograph. Here is a sample of recent feedback.
The programme was realistic from day one. We always knew who was on site and what was happening next.— Homeowner, Tower Hamlets
Our side return was awkward on paper. They proposed a sensible sequence and the finish is exactly what we briefed.— Homeowner, Hackney
We let them refurbish between tenancies. Minimal void period and the flat let within a week of completion.— Landlord, Islington
Choosing a builder is about trust. Our core team has worked together across many projects — from single-room lofts to full-house renewals — so we recognise risk early: access, party walls, lead times on steel and glass, and the points where programmes usually slip.
That experience is how we protect your budget and your calendar. Clients tell us they value straight answers and a site that stays organised. Browse our portfolio for the standard of finish we aim for, and read testimonials for how it feels to work with us day to day.
Every client receives a written quality commitment on completion. Where appropriate, we can discuss extended warranty options with recognised providers so you have long-term peace of mind.
We can put you in touch with past clients who have agreed to speak about their project — so you hear an unfiltered view before you sign.
Design coordination, structure, electrics, plumbing, plastering and decoration routed through one contractor — fewer gaps, fewer excuses.
Quotes are broken into stages and line items where it helps. Variations are agreed before extra work starts — no surprise invoices.
We concentrate on Central London, North London, East London and well-connected parts of Essex so we are never too far from your site. That focus keeps quality high and response times short.
Headquartered at Arch 229a, Ratcliffe Cross Street, E1 0HS, we are natural partners for building work in East London, including loft conversions, house extensions, refurbishment and maintenance-style renewals. Explore all areas we cover.
A quote costs nothing and is often the fastest way to sense whether we are the right team. Ask for a call-back or email us with photos and plans.
Get in touchMon–Sun, 8am–8pm. We will respond as soon as we can — usually within one working day.
Get in touch