An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. For a house in Norwich we start with a measured survey, check the council’s written HMO standards for the number of sharers, and then price each item separately. With students as well as working sharers renting in Norwich, we plan bigger jobs for the gap between academic-year tenancies where we can.
- Area
- Norfolk, England
- Postcodes
- NR1, NR2 and NR3
- Location
- 58 miles north-east of Cambridge
- Council
- Norwich City Council
- Pricing region
- East of England
What do extensions for extra rooms in Norwich involve?
- Party wall coordination where needed
- Fire separation and detection extended to the new space
- Ensuite drainage and extraction
- Foundations, structure and roof
- Planning route check and drawings
Which rules apply in Norwich?
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 Norwich before we price.
- 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.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
Norwich City Council: local HMO schemes
| Article 4 (HMO) | Not confirmed: check with the council |
|---|---|
| Additional licensing | No scheme found |
| Selective licensing | Not confirmed: check with the council |
Schemes change. Check the council’s current pages for the exact address in Norwich before you buy or start work. Source: Norwich City Council HMO licensing page, checked 2026-10-31.
How much do extensions for extra rooms cost in Norwich?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £37,100 – £63,600 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,900 – £4,250 | m² |
Prices in Norwich are shown with our regional adjustment for East of England (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.
For student houses in Norwich, booking by spring is the safest way to make the summer gap.
When do Norwich landlords need it?
Typical reasons for this work in Norwich:
- Moving to more sharers with consent
- A kitchen too small for the number of sharers
Questions about extensions for extra rooms in Norwich
Do you handle building control?
Yes, from application to completion certificate.
Do you cover all of Norwich?
Yes. We work across Norwich and the NR1, NR2 and NR3 postcode areas, plus the rest of Norfolk. Nearby places we also cover include Bowthorpe, Great Yarmouth, Lowestoft.
Which council covers HMOs in Norwich?
Norwich is covered by Norwich City 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 Norwich?
Our guide ranges for East of England 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 Norwich
- Bowthorpe · 3 mi
- Great Yarmouth · 18 mi
- Lowestoft · 22 mi
- Thetford · 27 mi
- Stowmarket · 33 mi
- Bury St Edmunds · 36 mi
- All of Norfolk