Indicative loft conversion prices

Question

Was just looking for indicative prices for a loft conversion for a mid terrace house with pitch roof please. Just to be turned into a third bedroom. Not sure if we'd go for Dorma or Velux style. At the moment we're not fully sure that it's something we want but would really appreciate some information on costings to help us with our decision.
Loft is 3.62m wide, 9.1m deep and 3.1m high.

Donald · Accepted Answer

As a rough guide I would say you would be looking at £20 - £30k depending the exact specification you went for.

Louis · Answer

We would suggest a range from £25k up to £35k to include dormer, stairs and the cost of scaffolding, completed up to second fix.

Jeevan · Answer

The cost of a loft conversion for a mid-terrace house with a pitched roof typically depends on whether you opt for a Velux (rooflight) conversion or a dormer conversion. Based on your dimensions (3.62m wide, 9.1m deep, 3.1m high), here are the estimated costs:

1. Velux (Rooflight) Loft Conversion – £25,000 - £40,000
Cheapest option as it requires minimal structural changes.
Windows are installed into the existing roof slope.
Best suited if you already have good head height (which you do at 3.1m).
No major external alterations, making planning permission unlikely to be needed.
2. Dormer Loft Conversion – £40,000 - £60,000
Adds more usable floor space by extending the roof vertically.
Allows for full-height walls rather than sloped ceilings.
Increases natural light and makes the room feel more spacious.
More costly due to structural work but provides better long-term value.
Likely requires planning permission depending on local regulations.

David · Answer

Hi there

You looking around the 45k mark with a dormer

Kind regards

David Price

Danielle · Answer

Anywhere from £15,000 to £25,000 if it’s a full loft conversion depending on certain aspects give me a call if you need more information

Craig · Answer

I’d say without dorma and velux I say about £24000 with about £28000-£30000

Peter · Answer

As a rule use a square meter build cost for a loft conversion at 1200 base price 3.62  9.1  33 square meter 40k  larege loft hope this helps 
regards peter

Amjid · Answer

Hi
    I need to have a look first. Roughly it will be about £ 15000.
Thanks.

Asad · Answer

As a rough guide price will be around £20 - £30k depending on the exact specification you went for.

Sidrit · Answer

Based on your loft’s dimensions (approximately 32.94 m²), here are indicative cost estimates for converting it into a third bedroom:

Velux Loft Conversion:
	•	Description: Involves installing roof windows (Velux) into the existing roof slope without altering its structure. ￼
	•	Cost per m²: Approximately £920.  ￼
	•	Estimated Total Cost: 32.94 m² × £920/m² = £30,305

Dormer Loft Conversion:
	•	Description: Entails extending the existing roof to add vertical walls and a flat roof section, increasing headroom and usable space. ￼
	•	Cost per m²: Approximately £1,670.  ￼
	•	Estimated Total Cost: 32.94 m² × £1,670/m² = £55,010

Additional Considerations:
	•	Planning Permission: Velux conversions typically fall under permitted development rights and may not require planning permission, whereas dormer conversions often do. It’s advisable to consult your local planning authority. ￼
	•	Location Factors: Costs can vary based on regional factors, with areas like London potentially incurring higher expenses.
	•	Structural Integrity: Ensure your existing roof structure can support the conversion type you choose.
	•	Professional Consultation: Engage with a structural engineer or architect to assess feasibility and obtain accurate quotations.

These estimates provide a general guideline. For precise costings tailored to your specific situation, consulting with local professionals is recommended

32.942001

3.62 * 9.1=32.942001

Indicative loft conversion prices

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