An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. In Dagenham, a place of roughly 110,000 people in Greater London, the work is planned around the HMO rules for England and the council’s written HMO standards.
- Area
- Greater London, England
- Postcodes
- RM7, RM8 and RM10
- Location
- 13 miles east of London
- Council
- London Borough of Barking and Dagenham
- Pricing region
- London
What do extensions for extra rooms in Dagenham involve?
- Party wall coordination where needed
- Ensuite drainage and extraction
- Kitchen or bedroom fit-out
- Foundations, structure and roof
- Heating, insulation and glazing
Which rules apply in Dagenham?
The rules below are the England-wide position for this kind of work. Councils add their own standards and schemes on top, so we always check the address in Dagenham before we price.
- 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.
- The Fire Safety Order 2005 applies to the common parts of HMOs, enforced by the fire and rescue authority.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
London Borough of Barking and Dagenham: local HMO schemes
| Article 4 (HMO) | In force across the council area Borough-wide Article 4 Direction (C3 to C4) since 14 May 2012. |
|---|---|
| Additional licensing | In force across the council area Borough-wide additional licensing launched 9 Jan 2025 for five years (to 8 Jan 2030). |
| Selective licensing | In force across the council area Selective licensing across the borough in three designated areas from 6 Apr 2025 for five years (to 5 Apr 2030). |
Schemes change. Check the council’s current pages for the exact address in Dagenham before you buy or start work. Source: London Borough of Barking and Dagenham HMO licensing page, checked 2026-10-31.
How much do extensions for extra rooms cost in Dagenham?
| 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 Dagenham 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?
Allow 8–14 weeks on site for a typical job. Drawings, approvals and long-lead items such as kitchens or fire door sets are booked before we start.
When do Dagenham landlords need it?
Landlords in Dagenham most often ask us for this when:
- Moving to more sharers with consent
- A kitchen too small for the number of sharers
Questions about extensions for extra rooms in Dagenham
Will the extension affect neighbours?
Possibly, if it is on or near a boundary. Party wall procedures may apply in England and Wales.
How far do you travel from Dagenham?
We cover the whole of Greater London and work UK-wide. For Dagenham the nearest towns on our list are Becontree (2 miles), Romford (2 miles), Hornchurch (2 miles).
Which council covers HMOs in Dagenham?
Dagenham is covered by London Borough of Barking and Dagenham. We read the council’s written HMO standards before pricing, and you should check the licence position for the exact address.
How much do extensions for extra rooms cost in Dagenham?
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 Dagenham
- Becontree · 2 mi
- Romford · 2 mi
- Hornchurch · 2 mi
- Barking · 4 mi
- Thamesmead · 4 mi
- Ilford · 4 mi
- All of Greater London
Other HMO services in Dagenham
- Loft conversions for extra rooms in Dagenham
- Communal kitchen refits in Dagenham
- Layout changes and room reconfiguration in Dagenham
- Large HMO conversions (7+ sharers) in Dagenham
- Ensuite installation in Dagenham
- House to HMO conversion in Dagenham
- Fire alarm and detection systems in Dagenham
- Professional and co-living HMO refurbs in Dagenham