Mobi Property Solutions

The all-in-one
building team
for your extension.

Plan, build and finish your London extension with one connected team, structure, trades and finishing all handled in-house.

Get a Free Quote What We Do

Built for how extensions actually work

Every trade, one connected team

We bring structure to your project: every trade your extension needs, coordinated by people who have actually built extensions across London, not just quoted them.

  • One Team, All In-House

    Building, roofing, electrics, plumbing, gas, carpentry and decorating, coordinated by us, not sub-contracted out and forgotten.

  • Over 20 Years' Experience

    Two decades in London construction, across terraces, semis and detached homes, in every kind of borough and building type.

  • Every London Borough

    Central, North, East, South East, South West and West, wherever your home is in London, we come to you.

  • Clear, Written Quotes

    You get a detailed written quote that explains exactly what is included, before any work begins.

  • House Extensions
  • General Building
  • Electrical Services
  • Plumbing & Heating
  • Gas
  • Roofing
  • Carpentry
  • Painting & Decorating
  • Floor Laying

Nine trades, one team. Nothing sub-contracted out and forgotten about.

How it works

From first call to handover

A straightforward road map, with you kept informed at every stage.

  1. 1

    Consult

    Free site visit, measurements and a talk through what is possible in your home.

  2. 2

    Quote

    A clear, detailed written quote, so you can compare and decide with confidence.

  3. 3

    Approve

    We advise on building regulations and, where needed, planning permission.

  4. 4

    Build

    Groundworks through structure, services and finishing, with the site kept tidy.

  5. 5

    Handover

    A full walkthrough of the finished space, and any snags put right.

A closer look

The work behind the extension

Every extension is really several trades working as one. Here is a closer look at the parts that go into it, from groundworks to the final fix.

Structure & Groundworks

  • Bricklayer building a cavity wall in front of a scaffolded house extension

    Structural Brickwork

    Solid groundwork and brickwork, built to last.

  • A new steel-supported opening formed in a rear extension, with insulation boards and brickwork exposed

    Structural Openings

    Steels and lintels, sized and installed to open up a space safely.

  • New window and door openings formed in a brick rear elevation, supported on scaffold towers

    New Window Openings

    Openings formed and supported properly while the brickwork above is built up.

  • Groundworker laying a new patio in a rear garden, with stacks of paving slabs ready to lay

    Groundworks & Patios

    Foundations, drainage and patios, finished as part of the same build.

Roofing

  • Timber roof frame on a new brick extension

    Roof Carpentry

    Timber roof frames cut and fitted on site, ready for felting and tiling.

  • Roofer fitting breather membrane and battens to a newly framed roof, with a chimney stack behind

    Weatherproofing

    Breather membrane and battens fitted correctly before a single tile goes on.

  • View along a stripped roof structure showing new rafters and insulation between them

    Roof Structure

    Rafters replaced and insulated properly, not just patched over.

Kitchens & Open-Plan Living

  • Modern extension kitchen with dark cabinets, oak details and large windows onto the garden

    Kitchen Extensions

    Bigger, brighter kitchens, with structure, services and joinery all handled by us.

  • Large open-plan kitchen and dining extension nearing completion, with a roof lantern and bifold doors to the garden

    Open-Plan Extensions

    Kitchen, dining and living space combined under one roof lantern.

  • Modern glass-fronted brick house extension glowing at dusk, with a dining space visible inside

    Glazed Rear Extensions

    Full-width glazing and clean lines for a bright, modern extension.

Electrical

Not every electrical job is inside a house extension. This was a lighting upgrade for a local church, bringing feature lighting to a nave that previously relied on daylight alone.

Church nave lit only by daylight through the rose window, before the new lighting was installed
Before
The same church nave with new feature lighting installed along both side aisles
After

Bathrooms, Plumbing & Heating

  • Finished shower room with a glass enclosure, tiled walls and a thermostatic shower valve

    Shower Rooms

    Glass enclosures, tiling and shower valves, plumbed and finished properly.

  • Finished ensuite bathroom with grey metro tiles, a vanity unit and a chrome heated towel rail

    Bathroom Refits

    Full bathroom and ensuite refits, from first fix plumbing to final tiling.

  • Newly installed column radiator on a decorated wall, with tools laid out for the final fix

    Heating & Radiators

    Central heating and radiators installed and finished as part of the wider job.

Flooring, Carpentry & Trades On Site

  • Oak stair treads meeting a herringbone floor

    Flooring & Carpentry

    Oak stair treads and engineered flooring, cut and fitted with care.

  • Fitter laying herringbone flooring on site wearing an MPS branded shirt

    Trades On Site

    Our own team on site, from first fix to the final finish.

  • A stripped-out room mid-renovation, with floor and ceiling joists, wiring and blockwork exposed

    First Fix & Strip-Out

    The unglamorous stage, done properly, so everything after it goes smoothly.

Also On Site

  • Temporary steel propping supporting a first-floor extension during structural work

    Temporary Works

    Floors and walls properly propped and supported while the structure changes underneath.

  • A large rear extension nearing completion, scaffolded with tiled roof and rendered walls

    Extensions, Start to Finish

    From scaffolding and render to the finished elevation.

  • Open-plan extension living room with a vaulted ceiling and glazed doors onto the garden

    Vaulted Extensions

    Exposed beams and vaulted ceilings for a striking finished space.

On site

Every trade, handled by us

All the work your extension needs, carried out by our own trades, not passed between separate sub-contractors.

  • Building & Structure

    Groundworks, brickwork, roofing and structural carpentry, built to last.

  • Electrical & Gas

    Wiring, consumer units, boilers and gas pipework for new extensions and existing homes.

  • Plumbing & Heating

    Central heating, radiators, hot water and plumbing for kitchens and bathrooms.

  • Finishing

    Carpentry, flooring and painting & decorating for the final coat.

For you

What it feels like to work with us

Building work in your home should feel controlled, not chaotic. Here's what we keep on top of throughout.

  • One Point of Contact

    You deal with our team directly, not a rotating cast of sub-contractors.

  • A Tidy, Protected Site

    Your home and belongings are protected, and the site is kept tidy day to day.

  • Regular Updates

    You always know what stage the build is at and what happens next.

  • A Finish That Lasts

    Careful, considered finishing, not a rush to hand back the keys.

A recent project

One Extension, Start to Finish

A tired 1930s semi in Kingston, taken back to a shell and rebuilt with a new rear and side extension, re-wired, re-plumbed and finished in black timber cladding and brick.

The house stripped back before the extension, with the old timber gable exposed and a pile of rubble by the front door
Before
The finished house at dusk, with a new first floor in black timber cladding and a new block-paved driveway
After
The extension mid-build, scaffolded with the new first floor and roof structure taking shape The build viewed from the driveway, scaffolded with the new gable and window openings formed A different finished extension: an open-plan living room with a vaulted ceiling and glazed doors onto the garden Newly laid herringbone floor next to sliding glass doors

Where we work

All London boroughs, including the South East

We're based in London and cover every borough of the capital, from Central London out to the South East, South West, North, East and West.

Central

  • City of London
  • Westminster
  • Camden
  • Islington
  • Kensington & Chelsea

North

  • Barnet
  • Enfield
  • Haringey

East

  • Barking & Dagenham
  • Hackney
  • Havering
  • Newham
  • Redbridge
  • Tower Hamlets
  • Waltham Forest

South East

  • Bexley
  • Bromley
  • Croydon
  • Greenwich
  • Lambeth
  • Lewisham
  • Southwark

South West

  • Kingston upon Thames
  • Merton
  • Richmond upon Thames
  • Sutton
  • Wandsworth

West

  • Brent
  • Ealing
  • Hammersmith & Fulham
  • Harrow
  • Hillingdon
  • Hounslow

Client feedback

What our clients are saying

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    Add a real client review here: a couple of sentences about the project, the team and the finished result.

    Client nameBorough · Rear extension

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    Client nameBorough · Side-return extension

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    Client nameBorough · Flooring

Read our reviews on Google (opens in a new tab)

Get a free quote

Let's plan your extension

Tell us a little about your project and we will come back to you, usually the same working day.

For example: type of extension, rough size, and when you would like to start.

We only use your details to reply to your enquiry. Enquiries are emailed to our office via FormSubmit.