High-quality, fully managed design & build across Cheshire — Alderley Edge, Wilmslow, Knutsford and Warrington.
The extension above your head.
High-quality, fully managed design & build across Cheshire — Alderley Edge, Wilmslow, Knutsford and Warrington. Fully managed design & build across Cheshire and the wider North West.
A significant structural renovation of our downstairs — removing internal walls to create a large open-plan living space, a new downstairs WC, new flooring throughout, a brand-new kitchen and patio doors. The quality of workmanship has been outstanding and the project was completed within the agreed timescales. Any minor snags were dealt with promptly, often almost immediately.
We started 2025 with a 2-storey chimney being taken out. The lads did such a good job we gave them the rest of our renovation — two small extensions, a new downstairs toilet and kitchen, upstairs bathroom, a bedroom move and renovation, finishing with a full back garden renovation. We've had many comments on how good the work looks, especially the brickwork.
We've recently had a knock-through between the lounge and dining room along with other internal and brick work. We're extremely pleased with the quality — everything finished to a high standard, the team were professional, tidy and clearly took pride in what they were doing. Communication with Craig was great throughout and they stuck to the agreed timeline.
After getting a few quotes for our kitchen, we chose Cheshire Design & Build NW and I'm glad we did. They turned up when they said they would, kept us updated, and got on with the job without any fuss. The finished kitchen looks fantastic. Reliable, respectful, and they clearly take pride in their work.
Excellent. Craig replied immediately and viewed the job. A detailed price and timeline was sent. Once the job was underway problems occurred — not Craig's fault — new plans were made and the job was done. Communication was 100%, that's important for me, and a cleaner is sent in at the end of the work. A great job done. Would definitely recommend.
Brilliant company, amazing team. Came to fit a lintel for me and brick up the outside of the house. The job was finished quickly and efficiently — very friendly and knowledgeable. Thank you so much, highly recommend.
This company has been the best to work with in terms of professionalism and quality — not like other companies I have worked with in the past. 10/10 service 👍
Highly recommend! Craig was very reliable and the quality of workmanship was outstanding! Thank you!
Great lads, very polite, showed up on time and did a great job.
A significant structural renovation of our downstairs — removing internal walls to create a large open-plan living space, a new downstairs WC, new flooring throughout, a brand-new kitchen and patio doors. The quality of workmanship has been outstanding and the project was completed within the agreed timescales. Any minor snags were dealt with promptly, often almost immediately.
We started 2025 with a 2-storey chimney being taken out. The lads did such a good job we gave them the rest of our renovation — two small extensions, a new downstairs toilet and kitchen, upstairs bathroom, a bedroom move and renovation, finishing with a full back garden renovation. We've had many comments on how good the work looks, especially the brickwork.
We've recently had a knock-through between the lounge and dining room along with other internal and brick work. We're extremely pleased with the quality — everything finished to a high standard, the team were professional, tidy and clearly took pride in what they were doing. Communication with Craig was great throughout and they stuck to the agreed timeline.
After getting a few quotes for our kitchen, we chose Cheshire Design & Build NW and I'm glad we did. They turned up when they said they would, kept us updated, and got on with the job without any fuss. The finished kitchen looks fantastic. Reliable, respectful, and they clearly take pride in their work.
Excellent. Craig replied immediately and viewed the job. A detailed price and timeline was sent. Once the job was underway problems occurred — not Craig's fault — new plans were made and the job was done. Communication was 100%, that's important for me, and a cleaner is sent in at the end of the work. A great job done. Would definitely recommend.
Brilliant company, amazing team. Came to fit a lintel for me and brick up the outside of the house. The job was finished quickly and efficiently — very friendly and knowledgeable. Thank you so much, highly recommend.
This company has been the best to work with in terms of professionalism and quality — not like other companies I have worked with in the past. 10/10 service 👍
Highly recommend! Craig was very reliable and the quality of workmanship was outstanding! Thank you!
Great lads, very polite, showed up on time and did a great job.
A third bedroom without the planning battle
In the right roof, a loft conversion gives you another bedroom — often with en-suite — for a fraction of what a rear extension costs, and without touching a blade of grass. Most rear dormers fall under Permitted Development, which cuts months off the timeline.
We've converted everything from hip-roof semis to truss-built detached houses. The constraint is always headroom and existing structure — and we'll tell you at the site visit whether yours is worth doing.
End-to-end loft delivery
From the party wall notice to the final piece of architrave. One team handles planning, structure, dormers, staircase and fit-out — so there's one accountable contract for the whole project.
- Feasibility Survey — Ridge-height measurements, truss assessment and sketch options — before you commit to a design fee.
- Planning & Party Wall — Full PD notifications or planning applications, plus party wall notices to adjoining owners.
- Structural Steelwork — Purlin-replacing steels, floor-spanning beams and ridge members — designed by our consultant engineer.
- Dormer Construction — Flat-roof or pitched dormers in matching brick, tile-hung, timber-clad or rendered finishes.
- Velux & Rooflights — Conservation-grade and standard Velux rooflights, plus larger in-plane glazed panels.
- Insulation & Airtightness — Warm-roof construction to latest Part L — no cold attic spaces, no condensation issues.
- Staircase Design — Bespoke timber staircases optimised for headroom and floor-plan impact — often a doubled-up scissor stair.
- En-Suite & Electrics — Full bathrooms with boosted hot water where needed, rewiring extended, mains-interlinked smoke alarms.
Benefits of Loft Conversions
How We Handle Loft Conversions
Consultation
An initial conversation about your project — scope, brief, budget framing, and the outcome you want.
Site Visit
We come to the property to understand the existing space, take measurements, and discuss feasibility on the ground.
Quotation
A detailed written quotation covering every element of the work, with no hidden costs.
Design & Planning
Where required, we handle architectural drawings, planning permission, and Building Regulations in-house.
Full Project Delivery
Our long-standing in-house team — supported by trusted specialist subcontractors — delivers the entire build.
Completion
Final walk-through, sign-off, and your workmanship guarantee.
Ready for Loft Conversions?
Get in touch for a free, no-obligation site visit and a detailed written quotation. Cheshire-led, with Greater Manchester covered for the right projects.
Loft Conversions FAQs
Do I need planning permission for a loft conversion?
Rear dormers and hip-to-gable conversions often fall under Permitted Development if the new volume is below the allowance (40m³ for terraced, 50m³ for semi/detached). Anything on the front elevation or in a conservation area needs a formal application. We check eligibility at the free site visit.
How much does a loft conversion cost in Cheshire?
Every loft conversion is individually quoted — the cost depends on roof type, dormer design and whether an en-suite is included. After a free site visit we provide a fully itemised written quotation with no hidden costs.
How long does a loft conversion take?
Lead times typically run from several weeks to several months, depending on the scope of the work. We confirm the programme as part of the written quotation following the site visit.
Is my loft actually suitable for conversion?
Minimum usable height is 2.2m at the ridge. Truss roofs need more structural work than cut roofs on older houses. We survey the existing structure on the first site visit and tell you straight if it's worth converting — or if a rear extension would give you more usable space for similar money.
Do I need fire doors and a protected staircase?
Yes. Building Regs require a 30-minute fire-resistant staircase enclosure from ground floor to loft, plus FD30 doors to habitable rooms. Mains-interlinked smoke alarms across all floors too. All handled as part of our build package.
Will I still be able to live in the house during the build?
Yes — the existing ceiling stays in place until we're ready to cut the opening for the new stairs, which is usually a few weeks into the programme. Noise and dust during structural weeks are real, but the house stays habitable.