Greenwich runs from the Thames path at Woolwich and Charlton, through Blackheath and Westcombe Park, out to the 1930s Tudor-style streets of Eltham and the newer estates around Kidbrooke and Thamesmead. It is also home to a World Heritage Site, which shapes what can happen on streets nearby.
London Building Contractors
Builders in Greenwich Trusted from First Survey to Final Handover
What We Do
Building Services from Greenwich Builders
Every service below is delivered by our own in-house tradespeople, fixed-price and fully insured, so you get dependable builders in Greenwich from survey to handover.
Loft Conversions in Greenwich
Transform your home with expert loft conversions in London by Alpha London Builders. From design and planning to construction, we deliver quality loft conversions tailored to your needs.
Learn more →House Extensions in Greenwich
Rear, side return, wraparound and double storey extensions designed and built to fit seamlessly with your London home.
Learn more →Basement Conversions in Greenwich
Cellar conversions, basement lowering and full new excavations, engineered and waterproofed to BS 8102 by our in-house team.
Learn more →Garage Conversions in Greenwich
Integral, attached and detached garage conversions into bedrooms, offices and annexes, most without planning permission.
Learn more →Property Refurbishment in Greenwich
Cosmetic updates through to full structural refurbishments, managed under one dedicated site manager from start to finish.
Learn more →General Building in Greenwich
Repointing, roof repairs, damp treatment, brickwork and small structural alterations, carried out by our own trades.
Learn more →Design & Build in Greenwich
One team, one contract, one fixed price for design, planning, structural engineering and construction on your project.
Learn more →New Builds in Greenwich
New homes and replacement dwellings built from foundation to final finish, with zero-rated VAT on construction costs.
Learn more →Commercial Building in Greenwich
Office, retail and restaurant fit-outs across London, delivered around your trading hours with minimal disruption.
Learn more →Residential Building in Greenwich
The full range of residential building work, from a single repair to a new build, delivered by one London contractor.
Learn more →Building Demolition in Greenwich
Safe, fully licensed demolition work across London, from internal wall removal to complete house demolition ahead of a new build.
Learn more →Why Choose Us
Why Choose Our Greenwich Builders
Heritage-aware planning
Around Maritime Greenwich, Blackheath and Charlton Village we check conservation area and listing status before any drawing is started.
Eltham semis understood
Hipped interwar roofs and rear gardens suit hip-to-gable lofts and rear extensions, and we price them from your survey.
Riverside checks
Near the Thames we look at flood zones early, so the design and the paperwork match from the start.
One site manager
A named person runs your Greenwich job from start to finish, with our own trades on site.
Local Knowledge
Building & Planning Considerations in Greenwich
Maritime Greenwich is a UNESCO World Heritage Site, and the area around it, along with Blackheath, Charlton Village, Eltham and other parts of the Royal Borough, is covered by conservation areas, so external changes there are looked at more closely than in an ordinary suburban street. Listed buildings need listed building consent for almost any alteration. Houses close to the Thames may sit in a tidal flood zone, which can add a flood risk assessment to an application. Away from those areas, most houses keep standard permitted development rights for rear extensions and rear dormers, though flats and maisonettes never do.
As Greenwich builders, every quote we provide for a Greenwich property starts with a check against Royal Borough of Greenwich's conservation area maps and Article 4 register, so you know exactly which route your project needs before any design work begins.
Local Guide
Building in Greenwich: what to know before you start
Four kinds of housing in one borough
Blackheath and Westcombe Park have Victorian villas and larger terraces, many with period features worth keeping. Charlton and Woolwich are a mix of Victorian terraces and former council estates. Eltham is largely interwar: semi-detached houses with hipped roofs and decent gardens. Kidbrooke and Thamesmead are newer, and a lot of homes there are flats, where the freeholder and the lease decide what you can do before planning ever comes into it.
Which job fits which street
In Eltham, a loft conversion in Greenwich usually means a rear dormer with a hip-to-gable on the semis. Victorian houses in Blackheath and Charlton often suit a rear or side-return extension. Where there is a tall lower-ground floor, a basement conversion may be possible, and older houses that need everything done are covered by our refurbishment service.
Before you commit to a design
Find out whether your street is in a conservation area or the setting of the World Heritage Site, and whether the house is listed. Near the river, ask about flood zones. If you share a wall, serve party wall notices early. We check these during the free survey and tell you what each one means for your timeline.
What we do in Greenwich: Loft conversions in Greenwich · House extensions in Greenwich · Basement conversions in Greenwich · Garage conversions in Greenwich · Property refurbishment in Greenwich
Worth reading first: Do you need planning permission for a loft conversion? · Building Regulations vs planning permission
Nearby: Builders in Bexley · Builders in Southwark
Ready to talk? Book a free site survey and we will tell you in writing which planning route your address needs.
Areas We Cover
Areas We Cover in Greenwich
Greenwich Town Centre
Blackheath
Charlton
Eltham
Woolwich
Westcombe Park
Kidbrooke
Plumstead
Don't see your street listed? Our builders in Greenwich cover the whole borough and the surrounding area — get in touch to check.
Our Work
Recent Greenwich Projects
A look at recent work carried out for clients in and around Greenwich.
Full House Rewire & Consumer Unit Upgrade
A complete rewire and 18th Edition consumer unit upgrade for a London flat, tested, certified, and signed off with a full Electrical Installation Certificate.
View Project →
Full Flat Refurbishment
A complete top-to-bottom refurbishment of a London flat — new kitchen, new bathroom, rewired, replastered and redecorated throughout.
View Project →What Clients Say
Reviews from Greenwich
“Our extension took exactly as long as they told us it would, which after two quotes from other builders felt like a small miracle. Would use them again without hesitation.
”
Amara Okafor
Rear Extension, Leyton
Common Questions
FAQs About Builders in Greenwich
Does living near the World Heritage Site in Greenwich limit what I can build?
It can. Maritime Greenwich is a World Heritage Site and parts of the surrounding area are conservation areas, so the council looks harder at changes that are visible from the street. Rear work often has more room to move than front work. Your address decides, and we check it first.
Can I convert the loft of an Eltham semi without planning permission?
Often yes, if the house is not in a conservation area and the added volume stays within the 50 cubic metre limit for semi-detached houses. A rear dormer is the usual form. Building Regulations approval is required either way.
Do I need a flood risk assessment for an extension near the river?
Possibly. Homes close to the Thames can sit in a flood zone, and in those areas an application may need a flood risk assessment. The Environment Agency's flood map and the council's planning team will confirm your zone, and we check it at survey.
My Greenwich flat needs work, what do I need first?
Your lease. Flats and maisonettes have no permitted development rights, and most leases require the freeholder's written consent for structural or external changes. Get that before you spend on design. We can price the work in parallel.
Ready When You Are
Get a Free Quote from Our Greenwich Builders
Free site survey, a fixed-price quote within 48 hours, and one team from first fix to final handover.
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