An HMO loft conversion adds one or two letting rooms, often with an ensuite, in the roof space. Landlords in Acton (W3) usually come to us with a council letter, a fire risk assessment or a house they have just bought. We price from whichever you have.
- Area
- Greater London, England
- Postcodes
- W3
- Location
- 6 miles west of London
- Council
- London Borough of Ealing
- Pricing region
- London
What do loft conversions for extra rooms in Acton involve?
- Feasibility and head-height check
- Dormer or roof windows
- Planning or permitted development check
- Building control sign-off
- Structural design and steelwork
Which rules apply in Acton?
Here is what usually applies to a Acton job of this kind. It is general information rather than legal advice, and the council’s written HMO standards have the final detail.
- 7 or more sharers is a sui generis large HMO and normally needs planning permission.
- A conversion can be a material change of use under the building regulations, so confirm with building control before work starts.
- Smoke alarms on every storey with living accommodation and CO alarms by fixed combustion appliances (other than gas cookers) are required by law.
- Licensed HMOs must meet national minimum bedroom sizes: 6.51 m² for one person aged 10 or over, 10.22 m² for two, and 4.64 m² for a child under 10.
London Borough of Ealing: local HMO schemes
| Article 4 (HMO) | In force across the council area Immediate direction for Perivale from 30 Oct 2024 and non-immediate direction for the rest of the borough from 2025. |
|---|---|
| Additional licensing | In force across the council area Borough-wide additional licensing 1 Apr 2022-31 Mar 2027; renewal consulted 15 Jul-24 Sep 2026. |
| Selective licensing | In force in part of the council area Two designations covering most wards: 1 Apr 2022-31 Mar 2027 (e.g. Southall, East/North Acton) and 3 Jan 2023-2 Jan 2028 (e.g. Greenford, Northolt, Perivale, Ealing Common). |
Schemes change. Check the council’s current pages for the exact address in Acton before you buy or start work. Source: London Borough of Ealing HMO licensing page, checked 2026-10-31.
How much do loft conversions for extra rooms cost in Acton?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Dormer loft conversion, about 30 m² | £40,000 – £60,000 | £51,200 – £76,800 | project |
| Rooflight loft conversion, about 30 m² | £22,500 – £30,000 | £28,800 – £38,400 | project |
Prices in Acton are shown with our regional adjustment for London (above the UK average). Your quote is itemised and fixed in writing once the scope and specification are agreed.
How long does it take?
Typical time on site: 6–10 weeks. We agree the programme with you before starting and send photo updates as the work progresses.
When do Acton landlords need it?
We usually get the call when:
- A house with usable roof space
- Moving to a larger HMO with the right consents
Questions about loft conversions for extra rooms in Acton
Does adding a loft room change the HMO planning position?
It can. Going from six to seven sharers moves a house into a large HMO in England, which normally needs planning permission. We check before design.
How far do you travel from Acton?
We cover the whole of Greater London and work UK-wide. For Acton the nearest towns on our list are Chiswick (1 miles), Shepherds Bush (2 miles), Willesden (2 miles).
Which council covers HMOs in Acton?
Acton is covered by London Borough of Ealing. We read the council’s written HMO standards before pricing, and you should check the licence position for the exact address.
How much do loft conversions for extra rooms cost in Acton?
Our guide ranges for London are in the table on this page, and the guide-price tool gives a figure for your house. A fixed written quote follows a free site visit.
Loft conversions for extra rooms near Acton
- Chiswick · 1 mi
- Shepherds Bush · 2 mi
- Willesden · 2 mi
- Barnes · 3 mi
- Notting Hill · 3 mi
- Wembley · 3 mi
- All of Greater London
Other HMO services in Acton
- Extensions for extra rooms in Acton
- Large HMO conversions (7+ sharers) in Acton
- Escape routes, emergency lighting and fire stopping in Acton
- Ensuite installation in Acton
- Layout changes and room reconfiguration in Acton
- Fire alarm and detection systems in Acton
- HMO fire safety upgrades in Acton
- Small HMO conversions (3–6 sharers) in Acton