First-floor extensions in Rhosllannerchrugog
Our first-floor extensions service in Rhosllannerchrugog covers everything: measured survey, design, planning or permitted development checks, structural design, building control and the build itself.
The basics for Rhosllannerchrugog at a glance.
- Postcode districts
- LL14 and LL20
- County / area
- Clwyd, Wales
- Price region
- Wales
- Guide price
- £23,000–£33,500 (£1,660–£2,390 per m²)
- Approval route
- It may be permitted development if the ground floor goes no more than 4 m and the first floor no more than 3 m beyond the original rear wall, with the first floor 10.5 m from the rear boundary.
- Nearest towns
- Coedpoeth (3.1 miles), Wrexham (3.8 miles), Brymbo (3.9 miles)
- Distance to Wrexham
- about 3.8 miles
- First visit
- Free, no obligation
About a first-floor extension
A first-floor extension suits you if your house already has a single-storey extension and you need more space upstairs. You get a structural check of the existing walls and foundations, a design that ties the new floor into the house, the approvals your nation needs, building regulations approval and the build, managed by us and carried out by vetted teams working under S&K.
Around Rhosllannerchrugog we also work in Coedpoeth, Wrexham and Brymbo, and across the rest of Clwyd. Postcode districts in and near Rhosllannerchrugog: LL14 and LL20.
What it costs in Rhosllannerchrugog
In Wales, which includes Rhosllannerchrugog, we'd expect a first-floor extension to cost around £23,000–£33,500 for 4 m × 3.5 m of new first-floor space (14 m²), or £1,660–£2,390 per m² including VAT. Kitchens, bathroom fittings and flooring are priced separately so you can compare like with like.
| Spec | Per m² | 4 m × 3.5 m of new first-floor space (14 m²) |
|---|---|---|
| Essential | £1,520–£2,200 per m² | £21,500–£31,000 |
| Standard | £1,660–£2,390 per m² | £23,000–£33,500 |
| Premium | £1,990–£2,870 per m² | £28,000–£40,000 |
Planning and building regulations in Rhosllannerchrugog
In Wales, a first floor over a rear extension can be permitted development if it goes no more than 3 m beyond the original rear wall and stays at least 10.5 m from the rear boundary, with the ground floor within 4 m. Over a side extension, the 10.5 m, 1 m set-back and 50% width tests apply. Otherwise a householder application costs £585.
Approval in Wales: Householder planning application: £585. Councils normally decide householder applications within 8 weeks.
Building regulations: Building regulations approval under the Welsh Approved Documents, which differ from England's in places (notably energy efficiency).
Design points for Rhosllannerchrugog homes
Escape and fire safety
A new first-floor bedroom needs an escape window with a clear opening of at least 0.33 m², at least 450 mm wide and 450 mm high, with the bottom no more than 1,100 mm above the floor, unless there is a protected route to the stairs.
Replacing the flat roof
The existing roof usually comes off and is replaced by a new first-floor structure. The room below is exposed for a short time, so we plan temporary weatherproofing and sequence the work to keep the kitchen or living room usable for as long as possible.
How we'd run your project
Start at your house
We come to your home in Rhosllannerchrugog, measure up, check the ground floor walls and roof structure, and note anything near the boundaries.
Drawings, then consent
We draw the scheme, check it against the rules in Wales, and take it through the right consent with the council.
Fixed price in writing
With approved drawings and calculations, we give you a fixed build price and a programme you can plan around.
Build
Foundations, walls, floor, roof, windows, then first and second fix. We break through into the house as late as we can.
Questions about first-floor extensions in Rhosllannerchrugog
Do I need planning permission for a first-floor extension in Rhosllannerchrugog?
Rhosllannerchrugog is in Wales, so Wales planning rules apply. It may be permitted development if the ground floor goes no more than 4 m and the first floor no more than 3 m beyond the original rear wall, with the first floor 10.5 m from the rear boundary. If in doubt, a lawful development certificate or a planning application gives you certainty before you build.
Who handles building regulations for a project in Rhosllannerchrugog?
We handle it as part of the project. What's needed in Wales: building regulations approval under the Welsh Approved Documents, which differ from England's in places (notably energy efficiency). We prepare the drawings and the engineer's calculations, book the inspections and pass you the completion paperwork at the end.
Which postcodes do you cover around Rhosllannerchrugog?
We cover Rhosllannerchrugog (LL14 and LL20) and nearby places including Coedpoeth, Wrexham and Brymbo, plus the rest of Clwyd. The first site visit is free.
Can I build on top of my existing single-storey extension?
Often yes, but only after the structure has been checked. Foundations, walls and lintels built for one storey may not carry two. We dig trial holes, look for the original building control approval and ask the structural engineer to confirm what can stay, what needs strengthening and what must be rebuilt.
What happens to the room below while the first floor is built?
The old roof is removed, so the room below is exposed for a short period. We fit temporary weather protection, plan the work so the roof comes off only when the new structure is ready, and agree with you which rooms will be out of use and for roughly how long.
Nearby
We also cover places near Rhosllannerchrugog, including:
Other extensions in Rhosllannerchrugog
- Rear
- Side
- Wraparound
- Part two-storey
- Over a garage
- Semi-detached
- Detached
- Kitchen and bedrooms
- Bedroom and en-suite
All two-storey extension services in Rhosllannerchrugog · First-floor extensions across Clwyd
Send us your postcode and a few details. We'll get back to you to arrange a visit and talk through your options.