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York, North Yorkshire

Glazed rear extension in York

Full-height glass, slim frames and big rooflights for the most open rear room. If you live in York 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.

York is covered from our North Yorkshire round, including YO1, YO10, YO23 and YO24. Glass-led rear extensions in York 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 York?

For York we work from the Yorkshire and the Humber rate: £2,600–£4,460 per square metre of new floor, including VAT, standard specification. Yorkshire prices sit below our West Midlands baseline; matching natural stone is the main variable.

Glazed rear extension prices in York
SizeGuide price inc VAT
3 m wide × 4 m deep (12 m²)£31,000–£53,500
4 m wide × 6 m deep (24 m²)£62,500–£107,000

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 glazed rear extension in York?

Here is how the rules in England apply to a glazed rear extension in York.

Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is 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 York like to extend?

York has through terraces and some back-to-backs as well as later semis; back-to-backs have little or no rear space, so we look at side or loft options there.

How a glazed rear extension in York comes together

  1. Free site visit

    We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.

  2. Design and guide price

    Two or three layout options with a guide price for each, so you choose the design knowing what it costs.

  3. Planning and regulations

    We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.

  4. 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.

Glazed rear extensions near York

Close by, we work in Haxby, about 3.9 miles away, and Selby, about 12.1 miles away.

Other work in York:

All rear extensions in York

FAQ

Glazed rear extension questions in York

What postcode areas do you cover around York?

Including YO1, YO10, YO23, YO24, YO30 and YO31, and the surrounding North Yorkshire 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.

Is a glass box a conservatory?

No. It is built to Building Regulations as part of the house, with insulated floor and roof, so it is usable all year.

Is the site visit in York free?

Yes. We visit, measure up and talk through the options with no cost and no obligation.

How long does a rear extension take to build in York?

Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.

Can you match the brick or stone on my York house?

We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.

Next step

See what your rear extension would cost

Get a guide price online in a couple of minutes, or book a free site visit and we'll measure up and talk you through the planning route.

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