Haslingden, Lancashire
Glazed rear extension in Haslingden
Full-height glass, slim frames and big rooflights for the most open rear room. If you live in Haslingden and want to know what a glazed rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Haslingden is covered from our Lancashire round, including BB4. Glass-led rear extensions in Haslingden are planned around which way the garden faces, because that decides the glass specification.
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 glazed rear extension cost in Haslingden?
In Haslingden, our guide for a glazed rear extension is £2,630–£4,510 per square metre including VAT for a standard specification. North West prices sit below our West Midlands baseline; access on terraced streets is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £31,500–£54,000 |
| 4 m wide × 6 m deep (24 m²) | £63,000–£108,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a glazed rear extension in Haslingden?
Planning for a glazed rear extension in Haslingden follows the English householder rules.
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.
New fabric must meet Approved Document L (2021 edition incorporating 2023 amendments): walls 0.18, roof 0.15 and floor 0.18 W/m²K, windows 1.4 W/m²K or Band B. Under the simple route, new windows, doors and rooflights should not exceed 25% of the extension floor area plus any openings removed; more glass is possible with a whole-house calculation.
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 Haslingden like to extend?
Stone and brick terraces are common around Haslingden. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier.
How a glazed rear extension in Haslingden 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Glazed rear extensions near Haslingden
Neighbouring places we cover include Rawtenstall (1.6 miles) and Accrington (3.8 miles).
- Glazed rear extension in Rawtenstall
- Glazed rear extension in Accrington
- Glazed rear extension in Ramsbottom
- Glazed rear extension in Bacup
- Glazed rear extension in Darwen
Other work in Haslingden:
FAQ
Glazed rear extension questions in Haslingden
Can you match the brick or stone on my Haslingden house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How long does a rear extension take to build in Haslingden?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Does glass need planning permission?
The same rules apply as any rear extension; glass does not change the depth or height limits.
What postcode areas do you cover around Haslingden?
Including BB4, and the surrounding Lancashire area.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Do I need planning permission for a rear extension in Haslingden?
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.