An HMO loft conversion adds one or two letting rooms, often with an ensuite, in the roof space. Chiswick is 6 miles west of London. We price loft conversions for extra rooms there against England’s HMO rules and the council’s written HMO standards, so work is planned to the standard an inspection looks for.
- Area
- Greater London, England
- Postcodes
- W4
- Location
- 6 miles west of London
- Pricing region
- London
What do loft conversions for extra rooms in Chiswick involve?
- Structural design and steelwork
- Feasibility and head-height check
- New stair within the protected route
- Ensuite where space allows
- Planning or permitted development check
Which rules apply in Chiswick?
Loft conversions for extra rooms in Chiswick must satisfy national law for England, the council’s written HMO standards and, where walls, drainage or fire separation change, the building rules. In short:
- 3–6 unrelated sharers is use class C4; changing from a family house is usually permitted development unless an Article 4 direction applies.
- Building regulations cover structural changes, new partitions, ensuite drainage, fire-resisting construction and notifiable electrical work.
- The Fire Safety Order 2005 applies to the common parts of HMOs, enforced by the fire and rescue authority.
- 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.
How much do loft conversions for extra rooms cost in Chiswick?
| 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 Chiswick 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 Chiswick landlords need it?
Typical reasons for this work in Chiswick:
- Moving to a larger HMO with the right consents
- A house with usable roof space
Questions about loft conversions for extra rooms in Chiswick
Does a loft room need a fire escape window?
In an HMO the main protection is usually a protected stair and fire doors. The building regulations and fire strategy decide the detail.
Do you cover all of Chiswick?
Yes. We work across Chiswick and the W4 postcode areas, plus the rest of Greater London. Nearby places we also cover include Acton, Barnes, Shepherds Bush.
Does a shared house in Chiswick need an HMO licence?
In England, a mandatory licence is needed for 5 or more people from 2 or more households. Smaller HMOs can need a licence where the council runs additional licensing, which is common in towns with many shared houses. Check the council’s website for the address.
How much do loft conversions for extra rooms cost in Chiswick?
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 Chiswick
- Acton · 1 mi
- Barnes · 1 mi
- Shepherds Bush · 2 mi
- Notting Hill · 3 mi
- Fulham · 3 mi
- Putney · 3 mi
- All of Greater London
Other HMO services in Chiswick
- Extensions for extra rooms in Chiswick
- Large HMO conversions (7+ sharers) in Chiswick
- Escape routes, emergency lighting and fire stopping in Chiswick
- Ensuite installation in Chiswick
- Layout changes and room reconfiguration in Chiswick
- Fire alarm and detection systems in Chiswick
- Shared bathroom and shower room refits in Chiswick
- Commercial and above-shop to HMO in Chiswick