Wrap-around extensions in Nottingham
A wrap-around extension extends your house across the back and down the side in one build, forming an L-shaped footprint around the original rear corner. It is usually chosen when a rear extension alone won’t give the kitchen, dining and living space a household needs, and there is a side return or side passage that can be brought into use.
Because it combines two extensions, it involves more planning checks, more structural steel, a more involved roof and more drainage work than a simple rear extension. This page explains what you gain, what makes it harder and how to decide whether it is the right route for your house.
What is a wrap-around extension?
A wrap-around extension is a rear extension and a side extension built as one connected structure. The side part infills the side return and the rear part extends across the back, so the two meet beyond the original rear corner of the house.
How it differs from a rear or side extension
A rear extension adds depth across the back. A side return extension widens the back of the house by filling the strip beside it. A wrap-around does both at once, which gives a wider and deeper room than either on its own and needs one set of foundations, one roof design and one build programme.
- Infills the side return or side passage.
- Extends across the rear to create full-width space.
- Opens up the original rear corner of the house.
Single-storey or two-storey
Most wrap-arounds are single-storey and focus on ground-floor living space. Two-storey versions add bedrooms or bathrooms above as well. They face stricter planning tests for neighbours’ light and privacy, and in practice they need planning permission. Our double storey extensions page covers building up in more detail.
- Single-storey: larger kitchen, dining, living and utility space.
- Two-storey: space upstairs as well as a larger ground floor.
- Two-storey designs need a householder planning application.
Is a wrap-around right for your house?
A wrap-around is not always the answer. Compare it with the simpler options before you commit to the extra cost and complexity.
A wrap-around may suit you when
- A rear extension alone would leave a long, narrow room.
- The side return is unused or only holds bins.
- You want kitchen, dining and living space plus a utility or WC.
- You can accept losing the side route to the garden.
A rear extension may be enough when
The house is already wide enough, there is no side return, or you want to keep the side passage. A single-storey rear extension is simpler to design, approve and build.
A side infill may be enough when
The main problem is a narrow kitchen rather than a lack of floor area, and the garden is small. Filling only the side return can widen the kitchen without taking any garden depth.
What a wrap-around layout can create
Adding space in two directions gives layout options a rear extension on its own can’t. Our L-shaped extension design guide goes into zoning, corner roof options and daylight in detail.
Full-width kitchen, dining and living
One connected room across the full width of the house and out into the garden, with space for an island, a dining table and seating.
Kitchen plus utility or boot room
The side part often holds a utility, boot room, pantry or WC, keeping laundry and clutter away from the main kitchen-diner.
Bedrooms above
A two-storey wrap-around can add bedrooms or a bathroom upstairs while enlarging the kitchen and living areas below, subject to planning permission.
Planning permission for wrap-around extensions
A wrap-around is assessed against both the rear and the side extension rules, and it has to satisfy both. That is why planning permission is commonly needed, although some single-storey designs may fall under permitted development depending on the property and any restrictions.
Single-storey wrap-arounds
Under the national permitted development rules for houses in England, the rear part and the side part are each checked against their own limits. Your property needs to be checked, but the main limits are:
- Rear: up to 3m deep on attached houses or 4m on detached houses (6m and 8m through prior approval).
- Side: single storey, no more than 4m high and no wider than half the width of the original house.
- No more than 3m to the eaves within 2m of a boundary.
- Extensions must not cover more than half the land around the original house.
- Side extensions are not permitted development in conservation areas and other Article 2(3) land.
Two-storey wrap-arounds
Two-storey side extensions are not permitted development, so a wrap-around with two storeys on the side needs a householder planning application. Two-storey rear extensions have their own limits too, including a maximum 3m depth and staying at least 7m from the rear boundary.
- Expect the council to look closely at neighbours’ light and privacy.
- Listed buildings, Article 4 directions and conditions on earlier permissions can remove or narrow permitted development rights.
- A lawful development certificate can confirm a single-storey design is permitted development before you build.
Which council decides
Applications go to your local planning authority: Nottingham City Council, Rushcliffe, Broxtowe, Gedling or Ashfield, or Erewash Borough Council for Long Eaton, which is across the county border in Derbyshire. Householder applications normally have an eight-week target for a decision once validated.
Building Regulations and party walls
Building Regulations approval is separate from planning and is needed either way. It covers structure, foundations, drainage, insulation, ventilation and fire safety. The side part often sits on or near the boundary, so the Party Wall etc. Act 1996 may mean serving notice on your neighbour before work starts.
What makes a wrap-around more involved to build
These are the parts of a wrap-around that add design time and cost compared with a simple rear extension. They are the questions to raise at the survey.
Steel at the old corner
Opening up both the rear wall and the side wall removes the original corner of the house. The load above is usually carried by steel beams and a post or column, designed by a structural engineer.
Roof junctions
Two roof areas meet each other and the existing house. Whether that is one flat roof, pitched roofs meeting in a valley or a glazed section, the junctions need careful detailing to shed water and fit below the upstairs windows.
Drainage in the side return
Side returns often hold soil pipes, gullies and inspection chambers. These may need diverting, and building over or near a public sewer usually needs agreement from the water company before work starts.
Garden and access
Filling the side return often removes the only outside route to the back garden. Bins, bikes and building materials may then have to come through the house, which affects both daily life and how the build is run.
Light to the original rooms
The middle room usually loses its side window. Rooflights, a lantern or a glazed roof section near the old house wall are the common ways to bring daylight back.
Neighbours and boundaries
Building close to the boundary brings in party wall matters, boundary wall heights and the effect on neighbouring windows, all of which shape the design.
How much does a wrap-around extension cost?
Wrap-arounds cost more than simple rear extensions because they cover two elevations, need more steel and a more involved roof, and often include drainage work. The figures below are indicative only.
Indicative guide range
Many wrap-around extensions at mid-range specification fall roughly in the £80,000-£140,000 band. This is a planning figure, not a quote. For single-storey projects, our L-shaped extension page shows guide ranges by footprint.
What moves the price
- Footprint, and single- or two-storey.
- Steelwork at the old rear corner.
- Roof type and the amount of roof glazing.
- Drain diversions and ground conditions.
- Kitchen, flooring and finish level.
- Fees: design, structural engineer, planning, building control and any party wall surveyor.
How we price it
After a free site survey you get a written, itemised quotation. Structure, roof, glazing, drainage and finishes are listed as separate lines, so you can see where the money goes and where there is room to adjust.
How long a wrap-around extension takes
The build is only one stage. Design and approvals take time too, and each stage depends on the one before.
Before work starts
- Measured survey and design drawings.
- Planning application, where needed. Householder applications have an eight-week target for a decision once validated.
- Structural design and Building Regulations approval.
- Party wall notices and any water company agreement for building near a sewer.
On site
Time on site depends on size, number of storeys, ground conditions and finish. Larger single- and two-storey wrap-arounds can take several months. We set out a realistic programme with your quotation, and it is an estimate rather than a guarantee.
What we do on a wrap-around project
Free site survey
We measure up and check the boundary, drains, window heights and access before suggesting a layout.
Design, planning and Building Regulations
We prepare the drawings, advise on the planning route and coordinate the structural design and Building Regulations submission.
Project management and a clear quotation
We manage the build and give you a written, itemised quotation so you know what each part of the work covers.
See the work before you decide
Our project gallery is organised by extension type, so you can look at finished work before booking a survey. Our reviews page explains how feedback is checked: a review is only published once it has been matched to a real job.
Ask for a reference
At your site survey, ask us for a past customer with a similar project you can speak to. It is the most direct way to hear how a build ran from someone who lived through it.
Wrap-around extension FAQs
Is a wrap-around extension permitted development?
Sometimes, but often not. A single-storey wrap-around may fall under permitted development if both the rear and side parts meet their limits and no restrictions apply. Many exceed at least one limit, and a wrap-around with two storeys on the side always needs planning permission, because two-storey side extensions are not permitted development. Your property needs to be checked.
How much does a wrap-around extension cost?
As an indicative guide, many wrap-arounds at mid-range specification fall between roughly £80,000 and £140,000. Size, storeys, steelwork, roof type, drainage and finishes all move the figure. You get a written, itemised quotation after a free survey.
Do I need Building Regulations approval as well as planning?
Yes. Building Regulations approval is needed for a wrap-around extension whether or not it needs planning permission. It covers structure, foundations, drainage, insulation, ventilation and fire safety.
Will I lose access to my back garden?
Often, if the side return is currently your only outside route. Some designs keep a gate or path elsewhere. Otherwise bins, bikes and garden equipment come through the house, which is worth thinking about before you decide.
What happens to drains in the side return?
They may need diverting or protecting. If the extension will be built over or near a public sewer, the water company usually needs to agree it before work starts. We check drain runs at the survey.
How long does a wrap-around extension take?
Design and approvals come first, and a householder planning application has an eight-week target for a decision once validated. Time on site depends on size and storeys, and larger projects can take several months. We give you a programme with your quotation.
What is the difference between a wrap-around and an L-shaped extension?
The terms overlap. An L-shaped extension is a single-storey wrap-around. This page covers the wider choice, planning and construction; our L-shaped extension page focuses on layout zoning, corner roof options and daylight.
Find out whether a wrap-around works for your house
Book a free site survey. We will check the boundary, drains and access, explain the likely planning route and give you a written, itemised quotation.