An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. In Swindon, a place of roughly 200,000 people in Wiltshire, the work is planned around the HMO rules for England and the council’s written HMO standards.
- Area
- Wiltshire, England
- Postcodes
- SN1, SN25, SN26 and SN38
- Location
- 36 miles west of Reading
- Council
- Swindon Borough Council
- Pricing region
- South West
What do extensions for extra rooms in Swindon involve?
- Party wall coordination where needed
- Heating, insulation and glazing
- Fire separation and detection extended to the new space
- Building control completion
- Foundations, structure and roof
Which rules apply in Swindon?
Extensions for extra rooms in Swindon 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.
- 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.
Swindon Borough Council: local HMO schemes
| Article 4 (HMO) | Not confirmed: check with the council |
|---|---|
| Additional licensing | Not confirmed: check with the council |
| Selective licensing | Not confirmed: check with the council |
Schemes change. Check the council’s current pages for the exact address in Swindon before you buy or start work. Source: Swindon Borough Council HMO licensing page, checked 2026-10-31.
How much do extensions for extra rooms cost in Swindon?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £36,400 – £62,400 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,850 – £4,150 | m² |
Prices in Swindon are shown with our regional adjustment for South West (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 Swindon landlords need it?
Typical reasons for this work in Swindon:
- Moving to more sharers with consent
- Adding a ground-floor room
Questions about extensions for extra rooms in Swindon
Can I extend an HMO under permitted development?
Some extensions to houses are permitted development, but rules differ for HMOs and by nation and council. We check the address before design.
How far do you travel from Swindon?
We cover the whole of Wiltshire and work UK-wide. For Swindon the nearest towns on our list are Cirencester (14 miles), Chippenham (16 miles), Witney (20 miles).
Which council covers HMOs in Swindon?
Swindon is covered by Swindon Borough 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 Swindon?
Our guide ranges for South West 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 Swindon
- Cirencester · 14 mi
- Chippenham · 16 mi
- Witney · 20 mi
- Stroud · 22 mi
- Newbury · 22 mi
- Abingdon · 23 mi
- All of Wiltshire
Other HMO services in Swindon
- Loft conversions for extra rooms in Swindon
- Communal kitchen refits in Swindon
- Layout changes and room reconfiguration in Swindon
- Large HMO conversions (7+ sharers) in Swindon
- Ensuite installation in Swindon
- House to HMO conversion in Swindon
- EPC and energy upgrades in Swindon
- Escape routes, emergency lighting and fire stopping in Swindon