An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. In Daventry, a town of about 28,000 people in Northamptonshire, the work is planned around the HMO rules for England and the council’s written HMO standards.
- Area
- Northamptonshire, England
- Postcodes
- NN11
- Location
- 18 miles south-east of Coventry
- Council
- West Northamptonshire Council
- Pricing region
- East Midlands
What do extensions for extra rooms in Daventry involve?
- Building control completion
- Fire separation and detection extended to the new space
- Ensuite drainage and extraction
- Kitchen or bedroom fit-out
- Foundations, structure and roof
Which rules apply in Daventry?
Extensions for extra rooms in Daventry 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:
- 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.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
West Northamptonshire Council: local HMO schemes
| Article 4 (HMO) | In force in part of the council area Article 4 directions cover several areas of Northampton (from 2011 onwards). |
|---|---|
| Additional licensing | In force in part of the council area Additional licensing in 20 wards across Northampton and Daventry 24 Feb 2025-23 Feb 2030 (replaced 2020-2025 scheme). |
| Selective licensing | No scheme found |
Schemes change. Check the council’s current pages for the exact address in Daventry before you buy or start work. Source: West Northamptonshire Council HMO licensing page, checked 2026-10-31.
How much do extensions for extra rooms cost in Daventry?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £33,950 – £58,200 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,750 – £3,900 | m² |
Use these as a starting point for budgeting. Access, condition and the council’s requirements in Daventry can move the figure either way, which is why we quote after seeing the house.
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 Daventry landlords need it?
Typical reasons for this work in Daventry:
- A kitchen too small for the number of sharers
- Moving to more sharers with consent
Questions about extensions for extra rooms in Daventry
Is a kitchen extension worth it?
Often, when the existing kitchen limits how many people the council will allow. A bigger kitchen can unlock an extra room.
Do you cover all of Daventry?
Yes. We work across Daventry and the NN11 postcode areas, plus the rest of Northamptonshire. Nearby places we also cover include Rugby, Northampton, Royal Leamington Spa.
Which council covers HMOs in Daventry?
Daventry is covered by West Northamptonshire Council. 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 Daventry?
Our guide ranges for East Midlands 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 Daventry
- Rugby · 9 mi
- Northampton · 12 mi
- Royal Leamington Spa · 15 mi
- Banbury · 15 mi
- Warwick · 18 mi
- Coventry · 18 mi
- All of Northamptonshire
Other HMO services in Daventry
- Loft conversions for extra rooms in Daventry
- Communal kitchen refits in Daventry
- Layout changes and room reconfiguration in Daventry
- Large HMO conversions (7+ sharers) in Daventry
- Ensuite installation in Daventry
- House to HMO conversion in Daventry
- Full HMO refurbishment in Daventry
- Void and between-tenancy refurbs in Daventry