Grantham, Lincolnshire
Terraced house rear extension in Grantham
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Grantham and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Grantham is covered from our Lincolnshire round, including NG31. On a Grantham terrace both neighbours usually need party wall notices or agreement, so we talk to them early.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a terraced house rear extension cost in Grantham?
For Grantham we work from the East Midlands rate: £1,990–£3,200 per square metre of new floor, including VAT, standard specification. East Midlands prices sit a little below our West Midlands baseline.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £27,000–£43,000 |
| 3 m wide × 6 m deep (18 m²) | £36,000–£57,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a terraced house rear extension in Grantham?
Whether your terraced house rear extension in Grantham needs a planning application depends on its size, your house and any local restrictions.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Grantham like to extend?
Red-brick terraces and semis are typical of Grantham. Coal-mining legacy areas in parts of the East Midlands can need a Coal Authority check before foundations are designed.
How a terraced house rear extension in Grantham comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Terraced house rear extensions near Grantham
From Grantham, the nearest places we also cover are Sleaford (11.4 miles) and Newark on Trent (13.0 miles).
- Terraced house rear extension in Sleaford
- Terraced house rear extension in Newark on Trent
- Terraced house rear extension in Melton Mowbray
- Terraced house rear extension in Bourne
- Terraced house rear extension in Oakham
Other work in Grantham:
FAQ
Terraced house rear extension questions in Grantham
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Will my terrace be in a conservation area?
Many Victorian terraces are. Your council's map shows it; we check at the survey.
Do you handle building control in Grantham?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Do I need planning permission for a rear extension in Grantham?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
What postcode areas do you cover around Grantham?
Including NG31, and the surrounding Lincolnshire area.