What is a rooflight loft conversion?
A rooflight loft conversion (sometimes called a roof window conversion) keeps the existing roof shape and adds roof windows that sit flush with the slope. The floor is strengthened, a staircase is added and the space is insulated and finished.
How much does a rooflight loft conversion cost in Smethwick?
In Smethwick, a rooflight loft conversion typically costs £29,000–£43,500 for a typical rooflight conversion, including VAT at 20% (standard rate). Prices in the West Midlands sit near the national average for this kind of work, and the range for Smethwick reflects that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| A typical rooflight conversion | £29,000–£43,500 |
| Higher specification | £43,500–£54,500 |
The biggest cost drivers are:
- Floor and roof strengthening
- Fire safety upgrades
- Number of roof windows
- Storage and finishes
For a figure based on your own measurements, try the guide price tool, then book a free home visit for a fixed quote.
Do you need planning permission for a rooflight loft conversion in Smethwick?
Here is how the rules work for a rooflight loft conversion in England. In England roof windows are permitted development if they project no more than 15 centimetres from the roof slope and side-facing windows are obscure-glazed. Listed buildings need consent.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
Handled as part of most rooflight loft conversions:
- Staircase and fire-safe escape route
- Head-height survey
- Insulation between and under rafters
- Electrics, heating and plastering
- Floor joists and any steel beams
- Drawings and structural calculations
How long does it take?
The build itself usually takes 4 to 6 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Smethwick
The West Midlands has large numbers of 1930s semis and Victorian terraces, which suit rear extensions, side extensions and dormer loft conversions.
Our Smethwick coverage includes postcode districts B66, and we also work in nearby places such as West Bromwich, Birmingham and Halesowen.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about rooflight loft conversions in Smethwick
What about fire safety?
The same escape rules apply as for any loft conversion, so a protected stairway and smoke alarms are typically needed.
How much does a rooflight loft conversion cost in Smethwick?
In Smethwick, a rooflight loft conversion typically costs £29,000–£43,500 for a typical rooflight conversion, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
How much head height do I need?
Around 2.2 metres or more from the top of the ceiling joists to the ridge is a good starting point. Insulation and new floor joists reduce the height.
Is it cheaper than a dormer?
Yes, usually, because the roof shape stays the same. But you gain less full-height floor space.
How long does a rooflight loft conversion take in Smethwick?
Typically 4 to 6 weeks on site. Design and approvals beforehand usually take 6 to 12 weeks.