An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Landlords in Harlow (CM17, CM18 and CM20) 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
- Essex, England
- Postcodes
- CM17, CM18 and CM20
- Location
- 21 miles north-east of London
- Pricing region
- East of England
What do extensions for extra rooms in Harlow involve?
- Heating, insulation and glazing
- Ensuite drainage and extraction
- Kitchen or bedroom fit-out
- Planning route check and drawings
- Building control completion
Which rules apply in Harlow?
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 Harlow 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.
- Fire precautions follow a risk assessment; the LACORS Housing – Fire Safety guide (2008) is guidance, not law, but many councils base their standards on it.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
How much do extensions for extra rooms cost in Harlow?
| 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 |
These are typical ranges including VAT, adjusted for East of England, where costs run above the UK average. The fixed price for a house in Harlow follows a site visit.
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 Harlow landlords need it?
Landlords in Harlow most often ask us for this when:
- A kitchen too small for the number of sharers
- Adding a ground-floor room
Questions about extensions for extra rooms in Harlow
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.
Do you cover all of Harlow?
Yes. We work across Harlow and the CM17, CM18 and CM20 postcode areas, plus the rest of Essex. Nearby places we also cover include Hoddesdon, Bishops Stortford, Waltham Abbey.
Where do I check the HMO rules for an address in Harlow?
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 Harlow?
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 Harlow
- Hoddesdon · 5 mi
- Bishops Stortford · 7 mi
- Waltham Abbey · 8 mi
- Cheshunt · 8 mi
- Hertford · 8 mi
- Chingford · 11 mi
- All of Essex
Other HMO services in Harlow
- Loft conversions for extra rooms in Harlow
- Communal kitchen refits in Harlow
- Layout changes and room reconfiguration in Harlow
- Large HMO conversions (7+ sharers) in Harlow
- Ensuite installation in Harlow
- House to HMO conversion in Harlow
- Small HMO conversions (3–6 sharers) in Harlow
- Full HMO refurbishment in Harlow