Louth, Lincolnshire
Two-storey rear extension in Louth
Two-storey rear extension in Louth: a larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We measure the house, show you what the rules allow, price it in writing and build it.
Louth and its postcode districts LN11 are part of our Lincolnshire coverage. In Lincolnshire we check the neighbours' rear windows first, because the upper floor is where most two-storey schemes win or lose planning.
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 two-storey rear extension cost in Louth?
For Louth we work from the East Midlands rate: £1,750–£2,620 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 × 5 m footprint, two floors (30 m²) | £52,500–£78,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £84,000–£125,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a two-storey rear extension in Louth?
Here is how the rules in England apply to a two-storey rear extension in Louth.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
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 Louth like to extend?
Louth has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
How a two-storey rear extension in Louth comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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.
Two-storey rear extensions near Louth
Neighbouring places we cover include Mablethorpe (11.1 miles) and Cleethorpes (13.4 miles).
- Two-storey rear extension in Mablethorpe
- Two-storey rear extension in Cleethorpes
- Two-storey rear extension in Grimsby
- Two-storey rear extension in Immingham
- Two-storey rear extension in Skegness
Other work in Louth:
FAQ
Two-storey rear extension questions in Louth
What postcode areas do you cover around Louth?
Including LN11, and the surrounding Lincolnshire area.
How long does a rear extension take to build in Louth?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
What is the 45-degree rule?
Many councils check that a two-storey extension does not cross a 45-degree line drawn from the nearest habitable window of the neighbouring house. We test it at the first drawing.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Is the site visit in Louth free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can you match the brick or stone on my Louth house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.