Side return extensions in Nottingham
A side return extension fills the narrow passage beside the rear wing of a terraced or older semi-detached house and makes the kitchen wider. Its roof, usually glazed or fitted with rooflights, also brings daylight into the middle of the house, which in many terraces is the darkest room.
We survey the passage, design the roof and boundary wall, coordinate planning checks, Building Regulations and party wall notices, then build it.
- Glazed, pitched or flat roof designs
- Party wall notices arranged where needed
- Written, itemised quotation after the survey
What is a side return extension?
Many Victorian and Edwardian terraces have the same layout: a front room, a middle room, and a narrow kitchen in a rear wing (often called an outrigger) that is thinner than the main house. The strip of ground between that wing and the neighbour’s boundary is the side return. It is usually a passage, a bin store or a dark gap outside the kitchen window.
A side return extension builds across that strip, so the kitchen gains the width of the passage. On its own it turns a galley kitchen into a room wide enough for a table or an island. Combined with a rear extension, it becomes an L-shaped kitchen-diner; our page on wrap around extensions covers that larger option.
If your house is semi-detached or detached with open ground beside it rather than a narrow passage, a full side extension is usually the better fit.
Best for
Victorian and Edwardian terraces, cramped galley kitchens, and homes with a narrow unused passage beside the rear room.
Typical timescale
Most side return builds take 8 to 12 weeks on site, plus design, approvals and any party wall process beforehand. This is a guide, not a promise.
Getting daylight into the middle of the house
Filling the side return usually covers the window that lit the middle room or kitchen. The roof has to replace that light, so its design matters more here than on almost any other extension.
Glazed roof along the return
A glass roof over the full length of the infill gives the most daylight and a clear view of the sky. It needs careful design for solar gain, insulation under Building Regulations, and cleaning access.
Pitched roof with rooflights
A roof that slopes down towards the boundary keeps the wall on the neighbour’s side low, which helps with the eaves height limit and with neighbour relations. Rooflights in the slope bring light down into the room.
Flat roof with a lantern or rooflights
A flat roof suits a combined side return and rear extension. A lantern or long rooflight positioned over the old middle-room wall lets light reach deep into the plan.
Opening up to the middle room
Removing the wall between the kitchen and the middle room lets light from the new roof reach the centre of the house. This needs steel beams designed by a structural engineer and approved by Building Control.
Glazed doors to the garden
Wider doors at the end of the new kitchen add light and a view of the garden. They also affect heat loss, so glazing is balanced against the rest of the design.
Floor levels
Rear wings in older houses are often a step down from the middle room. Levelling the floor as part of the build makes the space feel like one room.
The boundary wall and your neighbour
A side return extension almost always sits on or next to the boundary with the house next door. That affects the wall you build, where the rainwater goes and what you have to tell your neighbour.
- The garden wall usually comes down. The existing low wall along the passage is often shared. Replacing it with the new extension wall needs your neighbour’s agreement, or a wall built wholly on your side of the line.
- Party wall notices. Under the Party Wall etc. Act 1996, notice is usually required to build a new wall at the boundary, to work on a shared wall, or to dig foundations within 3 metres of your neighbour’s house and deeper than its foundations. Notices go out before work starts.
- Gutters and roof edges. Nothing can overhang next door without permission, so a boundary wall often has a parapet with a hidden gutter, or the roof falls back towards your side.
- If next door has already built. Where your neighbour has infilled their side return, your extension may be built against their wall, which is party wall work.
- Shared drains. Terraces often have drains and inspection chambers running down the passage, sometimes serving more than one house. They may need rerouting or a sealed cover, and a public sewer needs the water company’s consent to build over.
Talk to your neighbour early
A conversation before notices are served tends to make the party wall process simpler. We can explain the drawings to them at the same time.
Do you need planning permission?
Side return planning basics
A single-storey side return extension may fall under permitted development, depending on the property and applicable restrictions. Because it sits beside a rear wing, it is often assessed against both the side and rear extension limits in Class A, and how they apply to your layout needs checking.
- Width: an extension beyond a side wall must be no wider than half the width of the original house.
- Height: single storey, no more than 4 metres high, and eaves no higher than 3 metres within 2 metres of a boundary. Most side returns are within 2 metres.
- Depth: if the infill also extends beyond the back wall, the rear limit for a terraced or semi-detached house is 3 metres, or up to 6 metres through the prior approval process.
- Conservation areas: side extensions are not permitted development on Article 2(3) land, which includes conservation areas, so a planning application is needed. Article 4 directions and listed building status also change the position.
Where you rely on permitted development, a Lawful Development Certificate confirms it in writing. Building Regulations approval is needed either way.
Paperwork we coordinate
Permitted development checks or planning applications, Building Regulations approval and party wall notices, organised so they are in place before building starts.
Side return extension costs
Every house is different, but these indicative guide ranges give you a starting point for budgeting. They are not quotes. After the survey you receive a written, itemised quotation.
| Project type | Guide price range | Notes |
|---|---|---|
| Side return only (small) | £30,000 – £45,000 | Infill to widen an existing kitchen |
| Side return with rooflights | £40,000 – £55,000 | Adds roof lanterns and better glazing |
| Side return plus rear extension | £55,000 – £80,000 | Full open-plan kitchen-diner |
| Premium finish and bifolds | £70,000+ | High-spec glazing, flooring and joinery |
Prices are guide ranges only and exclude kitchen units and appliances. On a side return the cost is mostly driven by the roof glazing, the steelwork needed to open up the kitchen, drain alterations, party wall surveyor fees if needed, ground conditions and the finish you choose.
How we build your side return extension
Free survey
We measure the side return, check the boundary wall and drains, and discuss how you want to use the space.
Design and drawings
Plans and roof options that make the most of the width and light you can gain.
Planning and Building Control
We coordinate the permitted development check or planning application and Building Regulations approval.
Party wall notices
Where a shared boundary is affected, we arrange the notices with your neighbours.
Groundwork and build
Foundations, the boundary wall, steelwork and the new roof, made weathertight.
Fit out and finish
Glazing, plastering, flooring and decoration, ready for your kitchen fitters.
Handover
A final walk round, snagging, and the completion paperwork for your records.
See the work before you decide
Browse our project gallery for kitchen and side extension work, and read how we check feedback on our reviews page. At the survey you can also ask for a reference from a past customer with a similar house.
Worth asking at any survey
How will the roof be drained on the boundary side, who serves the party wall notices, and what is included for steelwork and drains?
Side return extensions across the area
Not sure if we cover your street? Give us a call and we will let you know.
Side return extension questions
A side return fills the narrow passage beside your rear room, making it wider. A rear extension pushes the back of the house further into the garden, making it longer. Many homeowners combine both for a larger open-plan kitchen-diner.
Not always. A single-storey side return may fall under permitted development if it meets the width, height and depth limits, but it is not permitted development in a conservation area, and listed buildings and Article 4 directions have their own rules. Your property needs to be checked, and Building Regulations approval is needed either way.
It can if the roof is solid. A glazed roof, or rooflights placed close to the old outside wall, brings light back into the middle of the house. Opening the kitchen up to the middle room lets that light reach further in.
Usually, yes, but it is party wall work. You serve notice under the Party Wall etc. Act 1996 before starting, and gutters and roof edges must not overhang their side without permission. Where the neighbour has already extended, the new wall may be built against theirs.
In most cases, because a side return is usually built on or close to the boundary. If your neighbour consents in writing, no surveyor is needed; if not, a party wall award sets out how the work is done. We arrange the notices as part of the project.
As an indicative guide, a small side return starts from around £30,000, and a side return combined with a rear extension is typically £55,000 to £80,000, excluding kitchen units and appliances. You receive a written, itemised quotation after we measure your home.
Most people do. You will be without a kitchen for part of the build, so many set up a temporary one in another room. The side wall of the kitchen is usually kept up until the new structure is weathertight.
Find out how much width and light your side return can give
At the free survey we measure the passage, check the boundary wall and drains, and talk through roof options before any drawings are prepared.