CLM Projects

Building · Leeds

House Extensions Leeds

Single and double storey house extensions built end to end by one team.

5.0 / 5 · 21 Google reviewsFree, no-obligation quotesFully insured

Extension living space with a glazed roof lantern and bi-fold doors, completed in Leeds by CLM Projects
CLM Projects Leeds Ltd
Fully Insured
Workmanship Guaranteed
20 Years Experience

When your family outgrows your home, a well-built extension is often better value than moving. CLM Projects has 20 years' experience delivering house extensions Leeds families rely on — single and double storey, rear and side — adding real living space and lasting value to your property. One experienced team manages the whole project, from architectural drawings and planning support to structural work, groundworks, brickwork, roofing, glazing, first and second fix, plastering and a watertight handover. We buy from our regular trade merchants, coordinate Building Regulations, and keep your home clean and respectful throughout. Fully insured and Leeds-based, we're built on trust and built to last, and we keep you informed at every stage so there are no surprises. Whether you're adding a bedroom above, opening up the ground floor, or both, tell us what you have in mind and we'll arrange a free, no-obligation quote.

What's Included

Our House Extensions Service

  • Architectural drawings & planning support
  • Structural calculations and steel beams
  • Groundworks & foundations
  • Brickwork and blockwork to match your home
  • Roofing — pitched, flat or lantern
  • Glazing, doors and windows
  • First & second fix (electrics and plumbing coordinated)
  • Plastering, flooring and full internal finish
  • Building Regulations coordination and sign-off

Our Work

Building Work by CLM Projects

Extension living space with a glazed roof lantern and bi-fold doors, completed in Leeds by CLM Projects

Glazed Roof Lantern Living Space

Building
Open-plan kitchen extension with roof lantern and bi-fold doors, built in Leeds by CLM Projects

Open-Plan Kitchen Extension

Building

Why CLM Projects

What Our Building Customers Say

Real, verified Google reviews

“Great company — built my extension years ago and recently a garage conversion into an office, plus other building work. Respectful and quality finish, I highly recommend.”
Adam NuttallExtension & garage conversion · Google review
“Scott… has completed the groundworks and drainage for my wrap-around side/rear extension. Scott was professional from start to finish, he has great communication, and exceeded my expectations. He turned up everyday, rain or…”
Laura CoatesGroundworks & drainage for extension · Google review
“Great guys to work with, highly skilled and people you can trust to do work properly and leave to it. I would highly recommend to anyone wanting quality service.”
Graham JacksonGeneral building work · Google review

Local Project Notes

Where This Work Comes Up Locally

double storey extensions Wetherby

Double Storey Extensions in Wetherby

Wetherby homes often have the plot size for a proper two-floor extension, but the detail still decides whether it feels original or bolted on. We check access, drainage, boundaries, roofline, brick match and the planning route before pricing, then manage drawings, Building Regulations and the build under one team.

  • - Useful where you need bedrooms or a larger family bathroom upstairs as well as more living space below
  • - Brick, roof pitch and window positions planned so the extension suits the existing house
  • - Planning and neighbour impact checked early, especially on side and rear two-storey work
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home extensions Rothwell

Home Extensions in Rothwell

Rothwell has a real mix of older stone-built homes and newer estates, so a home extension here starts with the property rather than a template. We look at ground levels, access, drainage, where the existing services run and whether the right answer is single storey, two storey, side, rear or loft space.

  • - One team for drawings, planning support, groundworks, steels, roofing and finish
  • - Older homes checked for structure and access before anyone promises a simple build
  • - Newer estate homes planned around boundaries, drainage and how much garden remains
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home extension in Horsforth

Home Extensions in Horsforth

Horsforth extensions often have to work with sloping streets, split levels and tighter access than a flat suburban plot. We check how the existing house sits on the ground, where drainage and steels need to land, and whether the best answer is a rear, side, double-storey or loft-led extension before drawings go too far.

  • - Useful for Victorian terraces, semis and later family homes around Horsforth
  • - Levels, access and drainage checked early so the design is buildable
  • - One team for drawings, planning support, structure, roofing and finish
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house extensions Morley

House Extensions in Morley

Morley has older stone and brick houses as well as newer estate homes, so a house extension needs to be planned around the property rather than copied from a standard layout. We look at access, boundary position, roofline, structure and how the new space will connect to the existing rooms.

  • - Single and double-storey options planned around the existing house
  • - Brick, roof and window details considered before pricing the build
  • - Good fit for kitchen extensions, extra bedrooms and larger family living spaces
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house extensions Garforth

House Extensions in Garforth

Garforth is close to our base and has the kind of family homes where an extension can be a better move than moving. We plan around the plot, access, boundaries and existing services, then handle the drawings, Building Regulations coordination and build under one accountable team.

  • - Rear, side and larger house extensions planned around the actual plot
  • - Useful where the brief is a bigger kitchen, extra bedroom or family room
  • - Local team covering groundworks, structure, roofing, glazing and finish
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over-structure extensions in Wetherby

Over-Structure Extensions in Wetherby

Building over an existing garage, side structure or single-storey section in Wetherby can unlock upstairs space without taking more garden, but the existing foundations and walls have to be checked first. We confirm whether the structure can carry the extra load before anyone prices it as a simple add-on.

  • - Existing foundations, walls and roof junctions checked before drawings are fixed
  • - Useful for adding bedrooms, an ensuite or a larger landing above existing space
  • - Planning, structure and Building Regulations handled as part of the extension route
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How We Work

The CLM Process

01

Survey & written quote

We visit, measure and photograph the job, then send a clear written quote with exactly what's included.

02

A planned start date

Once you accept, we book your start date, order materials and handle drawings or building regs where needed.

03

Staged payments

A deposit to book, then agreed stages as the work progresses. Anything extra is priced and agreed with you first.

04

Sign-off & guarantee

We walk through the finished work with you, sort any snags, and our workmanship is guaranteed.

Why CLM Projects

  • CLM Projects Leeds Ltd, a registered company
  • Fully insured (public liability)
  • Written quotes, agreed before we start
  • Staged payments, extras agreed first
  • Workmanship guaranteed
  • 20 years in the trade across Leeds

FAQs

House Extensions — Your Questions

Do I need planning permission for a house extension in Leeds?

Some single-storey extensions fall under permitted development, but larger or double-storey extensions usually need full planning permission. It's always subject to conditions, so we recommend confirming with Leeds City Council — we handle the drawings and any application for you.

How long does a house extension take to build?

A single-storey extension is often 8 to 12 weeks, while a double-storey project typically runs 12 to 20 weeks depending on size and finish. We provide a clear programme with your quote.

Will you handle drawings, planning and Building Regulations?

Yes. We provide planning support, prepare the drawings and coordinate Building Regulations throughout, so you have one experienced team accountable from start to finish.

Can we live in the house during the extension?

In most cases, yes. We plan the works to minimise disruption and keep the majority of your home usable, and we leave the site clean and secure each day.

Do house extensions add value?

A quality extension typically adds both space and value, particularly extra bedrooms or open-plan living areas that are in demand across Leeds. Built to a high standard, it's usually a sound investment.

What about the party wall with my neighbour?

If the work affects a shared wall or boundary, the Party Wall Act may require you to serve notice on your neighbour. We'll identify this early and advise on the process so the project stays on track.

House Extensions Across the Region

Leeds-based and covering the wider region — click your area, or call us to check we reach you.

Free Quote

Get a Free House Extensions Quote in Leeds

Tell us about your project and we'll come back with a clear, no-obligation quote. Prefer to talk? Call or WhatsApp 07726 290864.

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Ready to start your project?

Free, no-obligation written quotes from CLM Projects Leeds Ltd. Fully insured, workmanship guaranteed, 20 years in the trade.

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