An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Landlords in Morden (CR4 and SM4) 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
- CR4 and SM4
- Location
- 8 miles south of London
- Pricing region
- London
What do extensions for extra rooms in Morden involve?
- Heating, insulation and glazing
- Planning route check and drawings
- Party wall coordination where needed
- Foundations, structure and roof
- Fire separation and detection extended to the new space
Which rules apply in Morden?
Here is what usually applies to a Morden job of this kind. It is general information rather than legal advice, and the council’s written HMO standards have the final detail.
- 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.
- Smoke alarms on every storey with living accommodation and CO alarms by fixed combustion appliances (other than gas cookers) are required by law.
- National rules ask for an adequate number of bathrooms, WCs and basins and suitably located kitchens; numeric ratios are set by each council.
How much do extensions for extra rooms cost in Morden?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £44,800 – £76,800 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £2,300 – £5,100 | m² |
Prices in Morden 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: 8–14 weeks. We agree the programme with you before starting and send photo updates as the work progresses.
When do Morden landlords need it?
Typical reasons for this work in Morden:
- Adding a ground-floor room
- Moving to more sharers with consent
Questions about extensions for extra rooms in Morden
Do you handle building control?
Yes, from application to completion certificate.
Do you cover all of Morden?
Yes. We work across Morden and the CR4 and SM4 postcode areas, plus the rest of Greater London. Nearby places we also cover include Mitcham, Wimbledon, Carshalton.
Where do I check the HMO rules for an address in Morden?
With the local council for the address. Councils in England can add additional licensing and Article 4 directions on top of the national rules. Check the council’s website for the exact address before you buy or start work.
How much do extensions for extra rooms cost in Morden?
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.
Extensions for extra rooms near Morden
- Mitcham · 1 mi
- Wimbledon · 2 mi
- Carshalton · 2 mi
- New Malden · 3 mi
- Wallington · 3 mi
- Sutton · 3 mi
- All of Greater London
Other HMO services in Morden
- Loft conversions for extra rooms in Morden
- Communal kitchen refits in Morden
- Layout changes and room reconfiguration in Morden
- Large HMO conversions (7+ sharers) in Morden
- Ensuite installation in Morden
- House to HMO conversion in Morden
- Escape routes, emergency lighting and fire stopping in Morden
- EPC and energy upgrades in Morden