A loft conversion turns unused roof space into a habitable room such as a bedroom, bathroom or office, with a proper staircase, insulation, fire protection and natural light from rooflights or a dormer.
Whatever type of house you own in Ashton-under-Lyne, we start by looking at how a loft conversion would fit it rather than offering a standard package. We cover M34, M43, OL6 and OL7 and neighbouring places such as Dukinfield, Stalybridge and Droylsden. One named person looks after you from survey to handover, and nothing is booked until you hold our figure in writing, fixed for the work described.
- Guide price
- £28,500–£62,000 inc VAT
- Time on site
- 6–10 weeks on site
- Postcodes
- M34, M43, OL6, OL7 and SK14
- Planning rules
- England
- Local area
- Tameside
- Survey
- Free, with a written quote
Loft conversions prices in Ashton-under-Lyne
These are guide costs, not quotes. For a loft conversion in Ashton-under-Lyne the range is £28,500–£62,000, VAT included, reflecting prices in the North West that are about 5% below the national guide. Once we have visited for a free survey, you get a firm figure for the scope you approve.
| Type of job | What it usually involves | Guide in Ashton-under-Lyne |
|---|---|---|
| Rooflight conversion | Rooflights in the existing slope, a new floor, staircase and insulation, where head height already works. | £19,000–£33,000 |
| Dormer conversion | A rear dormer adding headroom and floor space, often with a bedroom and shower room. | £30,500–£57,000 |
| Hip-to-gable or mansard | Larger structural changes to the roof for the maximum usable space. | £47,500–£81,000 |
Expect these to shape the final quote:
- Conversion type: rooflight, dormer, hip-to-gable or mansard
- Floor area, existing head height and roof structure
- Adding a shower room or en-suite in the roof
- Staircase layout, fire doors and the level of finishes
Scope of the work
- Structural calculations and steel beams where needed
- Dormer, hip-to-gable or rooflight structure as agreed
- Staircase designed to fit your landing and meet regulations
- Insulation to walls, roof slope and floor
- Fire doors, mains-linked smoke alarms and a protected escape route
- Plastering, internal doors and building control sign-off
Homes in Greater Manchester
Rows of Victorian red-brick terraces fill much of Manchester, Salford and the mill towns, with stone terraces in the Pennine fringes around Oldham and Saddleworth. South Manchester has Edwardian semis and villas, Wythenshawe was built as a large interwar garden suburb, and city-centre apartments and new estates continue to grow.
Rainfall is high, especially near the Pennines, so brickwork, gutters and roof coverings take a steady soaking and freeze-thaw over winter.
So when we survey a Ashton-under-Lyne property for a loft conversion, the first step is working out how it was built and what has been changed since.
Planning and building rules in Ashton-under-Lyne
Each UK nation sets its own consent rules, and Ashton-under-Lyne is in England. What follows is a plain summary; we check the specifics for your property with the council before pricing anything.
In England, many loft conversions are permitted development: up to 40 m³ of extra roof space on a terraced house and 50 m³ on a semi-detached or detached house, no dormer on the front roof slope facing a road, nothing higher than the existing roof, and similar-looking materials. Conservation areas, listed buildings and flats need planning permission.
Building Regulations approval is always needed for a loft conversion: floor strength, a proper staircase, insulation, fire-protected escape route and smoke alarms. The Party Wall etc. Act 1996 usually applies on attached houses.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
From survey to handover
We look at the job
We arrange a free site survey on a date convenient to you. We measure up, look at the existing structure and access, and discuss your plans for a loft conversion so the price reflects your home.
Quote in writing
Next you receive a written quote with a fixed price for the agreed specification. It lists what is included, what is not, and how payments are staged, so you can compare it properly.
Dates and permissions
Before anyone starts, we confirm the programme in writing, check whether consents are required and arrange deliveries. If a skip or scaffolding on the road needs a permit, we apply for it.
On site to finish
The job proceeds in the order set out in the programme, with dust and debris kept under control. Finally we tidy away, inspect the work together and pass the finished project over to you with its paperwork.
Why homeowners choose us
Frequently asked questions
How long will a loft conversion take?
On a typical home, allow 6–10 weeks on site. Larger projects, older buildings and extra work found once things are opened up can extend that, while simpler jobs may be shorter. Your quote includes an estimate of time on site, and your point of contact keeps you updated on the programme as the work progresses.
Do you cover Dukinfield, Stalybridge and Droylsden?
Yes. As well as Ashton-under-Lyne, we cover Dukinfield, Stalybridge and Droylsden and the rest of Greater Manchester. Our coverage is UK-wide, so the process is the same wherever you are: a free site survey, a quote in writing that fixes the price for the agreed scope, and one point of contact while the work is planned and carried out.
Where will the new staircase go?
The new staircase usually sits above the existing stairs, rising from the landing so it uses space that is already circulation. Sometimes it needs to come from a small bedroom or box room, which reduces that room's size. Building regulations set rules on headroom, step size and handrails, with some flexibility for lofts. We look at options at the survey and show you how each affects the floor below.
How much does a loft conversion cost?
A typical dormer loft conversion on a 3-bed semi costs £28,500–£62,000. A simple rooflight conversion costs less, while hip-to-gable and mansard conversions cost more because they change the roof structure. As a rough guide, allow around £800–£1,700 per square metre of new floor plus fixed costs for the staircase, steels and fees. Adding a shower room is the most common extra. We confirm a fixed price after surveying your loft.
Is my loft suitable for conversion?
A loft is usually suitable for conversion if there is enough head height, a roof structure that can be adapted and space for a staircase. A common rule of thumb is at least 2.2m from the top of the ceiling joists to the underside of the ridge, though dormers and mansards can create height where it is short. Modern trussed roofs need more structural work. We check all of this at the survey.
Near Ashton-under-Lyne
Homes across M34, M43, OL6 and OL7 in Ashton-under-Lyne are within our coverage, as are those in Dukinfield, Stalybridge and Droylsden. If you are just outside these areas, ask anyway, because we work right across the UK.

