info@hccconstruction.co.ukQuantity surveying and building across London
Home CareConstruction

Main contractor, London

Builders in London for Extensions and New Builds

One building contractor carrying the whole job, from groundworks and steels through plastering and joinery to building control sign-off.

Excellent
Builders

Builders

  • A written price before work starts
  • One team from plan to handover
  • Working across London

Clients value one builder answering for every trade on site

Client reviews

Excellent
  • “Tidy and well organised”

    The loft went in with the house still lived in. Dust sheets every day, the stairs finished before the steels were boxed in, and clear updates each Friday.

    Homeowner, loft conversion

  • “Thought about every detail”

    The wet room was planned around my mother’s wheelchair, from the door width to where the rails sit. She can use it on her own now.

    Family member, accessible bathroom

  • “Clear valuations”

    Monthly valuations were measured properly and explained line by line. Having the numbers checked independently made the whole job calmer.

    Developer, refurbishment

  • “Straight answers”

    Every question about the basement got a straight answer, including the ones about party walls and drainage we had not thought to ask.

    Homeowner, basement

  • “Kitchen fitted properly”

    Units level, worktop joints you can barely see, and the old boxing moved so the extractor could run straight out. Very happy with it.

    Homeowner, kitchen

  • “Cost plan we could trust”

    The cost plan broke every stage down so we knew what the extension would need before a single quote came in. No surprises at the final account.

    Homeowner, extension

A building project in London usually involves a dozen trades, a building control inspector, a structural engineer and often a neighbour’s party wall surveyor. Someone has to hold all of that together. As a main contractor, Home Care Construction takes on that role: running the site, ordering materials, sequencing the trades and taking responsibility for the finished work under a single contract.

We work as builders on the full range of residential jobs, including rear and side extensions, loft conversions, whole-house renovations, internal remodelling and new builds on infill and backland plots. The same site structure applies whether the job is a kitchen extension on a Victorian terrace or a new house built from the slab up. Only the scale changes: more trades, longer programmes and more inspection points on the larger jobs.

What stays constant is the way a job is run. There is a written programme, a single point of contact on our side, a priced schedule the work is measured against, and inspections booked at the right stages so nothing is covered up before building control has seen it. It also means one contract, so there is never a question about which trade is responsible when something needs putting right.

Home Extensions by a London Building Contractor

Extensions make up a large share of our building work, and the shape of the job is similar each time: footings, a new slab or suspended floor, walls, steelwork to open up the existing house, a roof and then the fit-out. The detail changes with the property. A side return on a Victorian terrace means building tight against a neighbour’s boundary wall, usually under the Party Wall etc. Act 1996. A wraparound on an Edwardian house combines the side return and the rear. A 1930s semi often has room for a side extension on its own foundations.

Our crews handle the groundwork, brick and blockwork, steels and roof, then carry on through first and second fix. Rooflights, sliding or folding doors and underfloor heating are fitted within the same programme, so nobody waits for a separate firm to turn up. The planning and layout side of this work is covered on our home extension page.

Loft Conversions Within a Wider Build

A loft conversion is often one part of a bigger programme: a rear dormer added while the ground floor is extended, or a mansard built during a full renovation. Running them together under one builder means one scaffold, one set of skips and one building control application rather than several.

The structural sequence is well established. New floor joists are laid clear of the existing ceiling joists, steel beams go in on padstones to carry the new floor and the dormer, and the roof is opened in stages to keep the house weathertight. Once the house gains a new storey, Part B calls for a protected escape route, fire-resisting doors and interlinked mains-powered smoke alarms.

  • Rear and L-shaped dormers on terraces
  • Hip-to-gable conversions on semis and end-of-terrace houses
  • Mansards where planning allows
  • Rooflight conversions with little external change

Our dormer loft conversion page goes into planning and design in more depth.

House Renovations and New Builds

Renovating an older London house starts with finding out what is really there. Lifting floorboards, opening chimney breasts and stripping back plaster shows us the condition of the joists, any old lead or iron pipework, lime mortar, and past alterations that were never signed off. We price the full renovation once that picture is clear, keeping provisional sums for things that genuinely cannot be seen yet. A typical scope includes rewiring to Part P, new heating and plumbing, replastering, sash window repair or replacement, and new kitchens and bathrooms.

New builds follow a different pattern. On an infill or backland plot the work begins with site set-up, service connections and foundations designed for the clay, then moves through the superstructure and roof to a weathertight shell before fit-out. We build to the approved drawings and the engineer’s design, arrange building control inspections at each stage, and hand over with the completion certificate and the records a new home needs for sale or mortgage.

Refurbishment and Remodelling

Remodelling changes how the existing house works without necessarily adding floor area. Knocking the front and back reception rooms together, moving the kitchen to the rear, forming a utility room under the stairs or turning a box room into a family bathroom are common changes on London terraces. The work is mostly internal, but it still involves structure, services and regulations.

Taking out a load-bearing wall needs a beam designed by an engineer, sitting on padstones with proper bearings, with temporary propping while the wall comes down. Moving a bathroom affects waste runs and the fall to the stack. Opening up a kitchen may mean re-routing pipework and upgrading the consumer unit.

Refurbishment is a lighter touch: new floors, plastering, joinery, decoration, and upgrades to insulation and ventilation to meet Part L and Part F where they apply. Many jobs mix the two, so we plan the sequence to finish the dusty structural work before new finishes arrive on site.

Builder laying blockwork for a new wall

Structural and Internal Building Work

Much of what a builder does disappears once the house is finished. Underpinning a failing corner, replacing a rotten bressummer over a bay, inserting a steel frame to open up the back of a house, rebuilding a leaning chimney stack or tying in a bowing flank wall are all structural jobs that end up behind the plaster.

  • Removal of load-bearing walls and chimney breasts with engineered support
  • Steel beams on padstones and new brick piers
  • Floor strengthening and new joists hung on joist hangers
  • Stud partitions, fire-rated boarding and acoustic insulation
  • New staircases and stair alterations to Part K

Each of these needs calculations from a structural engineer and inspection by building control. Where the work touches a party wall, such as a steel bearing into a shared wall, notice is served on the neighbour before anything starts. We keep the calculation packs and inspection records together so they can be handed over at the end of the job.

Specialist Trade Work on Building Projects

Some parts of a build need trade-specific skill rather than general building. We carry these trades within the main contract, so they work to the same programme and sit under the same agreement instead of being arranged separately by the client.

That includes electrical work to Part P, heating and plumbing including unvented cylinders, flat roofing in single-ply or GRP, leadwork to dormers and chimneys, tanking to damp walls, plastering and skim, tiling, and finish joinery such as staircases, fitted storage and skirtings. Brickwork on a London frontage is its own skill as well: matching yellow London stocks, using lime mortar and copying the original pointing profile is what makes an extension look planned rather than bolted on.

Coordinating the trades is where many projects lose time. A plasterer arriving before first fix electrics are finished, or a screed poured before the underfloor heating has been pressure tested, costs days. The trade sequence is written into the programme and checked every week on site.

Project Management and the Build Process

Every job starts with a site survey and a priced schedule of works based on the drawings. Once it is agreed, a programme sets out the order of trades and the inspection points: foundations, damp-proof course, drainage, structural steel, insulation and completion. The programme is updated as the work moves and shared with the client.

On site, the job is run by a site lead who manages trades, deliveries and safety, and who leaves the house secure and watertight at the end of each day. Where the family is living in the property, we agree protected routes, dust screens and working hours in advance, and let neighbours know about skip deliveries and noisy work.

Changes are handled in writing. If the client asks for an extra run of sockets or a different tile, the cost and any effect on the programme are agreed before the work is done. At handover we walk the house with the client, list any snags, and pass over the building control certificate, test certificates, drawings and manuals for new equipment.

How it works

How a build runs with us

Four stages that take a building job from the first site visit to the day the keys come back.

  1. Plans and cost figures being reviewed at a desk

    Survey and scope

    We visit the property, review the drawings and check access, existing structure and services. The scope is written up as a schedule of works so both sides agree what is included before any price is fixed.

  2. Bright finished interior after building work

    Price and programme

    The schedule is priced trade by trade, with provisional sums only for items that cannot yet be seen. A programme sets the order of works and the points where building control will inspect.

  3. House under construction with new block walls

    Build and inspect

    The site team works through groundworks, structure, first fix, plastering and second fix in sequence. Inspections are booked before anything is covered up, and changes are priced and agreed in writing.

  4. London terraced houses with building work under way

    Snag and hand over

    We walk the finished work with the client, clear the snag list and hand over the completion certificate, test certificates, manuals and drawings, so the house has a full record of what was built.

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Areas covered

Building work across London

The age of a London street shapes how a builder approaches it. Victorian terraces in Walthamstow and Peckham sit on shallow footings in clay, with party walls on both sides and access only through the front door, so every steel and every bag of plaster is carried through the hall. Edwardian houses in Streatham often have larger back additions that suit a wraparound extension. Semi-detached and detached homes in Wimbledon offer room for side extensions and, with planning, new build plots at the end of long gardens. Across all of them we arrange skip licences and parking suspensions with the borough before work starts.

  • London
  • City of Westminster
  • Islington
  • Chelsea
  • Battersea
  • Holloway
  • Brixton
  • Peckham
  • Fulham
  • Archway
  • Shepherds Bush
  • Kilburn
  • Canary Wharf
  • Stamford Hill
  • Willesden
  • Cricklewood
  • Putney
  • Greenwich
  • Streatham
  • Stratford

Plus 61 more towns listed on the areas we cover page.

FAQ

Builders: questions people ask first

Builders
Do builders arrange building control and party wall notices?

We make the building control application, book inspections at each stage and obtain the completion certificate as part of the contract. Party wall notices are the building owner’s legal responsibility, but we identify where the Party Wall etc. Act 1996 applies, advise on timing, and carry out the work in line with any award agreed between the surveyors.

Can you build a new house on a garden plot in London?

Yes, once planning permission is in place. Backland and infill plots bring their own issues: access for plant and deliveries, drainage connections, tree root protection and neighbours close on several sides. We build from the approved drawings and the engineer’s design, and coordinate service connections and building control through to completion.

What happens if the builder finds something unexpected?

Older London houses often hide rotten joist ends, undersized lintels or old alterations that were never approved. When we find one, work on that area pauses, we show the client what has been uncovered, and we price the repair before carrying on. Items that cannot be seen at quotation stage are listed as provisional sums, so they already have a place in the budget.

How long does building work take?

It depends on the scope. A loft or single-storey extension is measured in weeks, a whole-house renovation or new build in months. The programme issued with the quote sets out each stage and inspection point, and it is updated as the job moves. Lead times on steel and glazing, weather and design changes are the usual reasons for movement.

Do you work from an architect’s drawings or help with design?

We build from drawings prepared by the client’s architect or designer, together with the structural engineer’s calculations. If a project has not reached that point yet, we can explain which drawings and approvals will be needed and in what order, so the design arrives on site with the information a builder needs to price and build it properly.

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Excellent
  • A written price before any work starts
  • Cost planning and building from one team
  • London and the towns around it
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