Home extensions in Arnold
We plan and build rear, side, double storey and wrap around extensions, loft conversions and orangeries for homes in Arnold, Redhill, Daybrook and the surrounding area.
Arnold falls under Gedling Borough Council for planning. Many homes here sit on plots with room to grow, so the question is often not whether you can extend but which option gives the most useful space. We answer that at a free survey.
- Free, no-obligation site survey
- Planning and Building Regulations coordinated for you
- Written, itemised quotation
Gedling or Nottingham City?
Arnold is in the Borough of Gedling, so Gedling Borough Council decides planning applications, prior approval requests and Lawful Development Certificates. The catch is the postcode. NG5 stretches well beyond Arnold into parts of Nottingham such as Sherwood and Bestwood, which are handled by Nottingham City Council. If you are close to the boundary, don’t assume; we check which council covers your address.
Building Regulations are a separate approval. They cover how the extension is built, from foundations and steelwork to insulation and drainage, and apply whether or not you need planning. You can use local authority building control or a registered building control approver (formerly an approved inspector). Either way, you get a completion certificate at the end, and we coordinate the inspections.
At a glance
- Planning: Gedling Borough Council
- Some NG5 addresses: Nottingham City Council
- Building Regulations: local authority building control or a registered approver
Areas we cover in and around Arnold
Arnold town centre, Redhill, Killisick, Daybrook, Woodthorpe and nearby streets.
Going out, going up, or into the roof
Arnold has a lot of 1930s semis with long gardens, plus larger interwar and post-war detached homes. That gives more choice than on a tight terrace.
A kitchen extension across the back of a semi is the most common starting point. If you need a bedroom as well, a bedroom extension over a new ground floor room means one set of groundwork and one build period rather than two, though two storey work usually needs a planning application. A loft conversion adds a room without using any garden, and on semis a hip-to-gable conversion is often how enough headroom is created.
Corner plots need extra care. A side extension that would sit forward of a side wall facing a road isn’t permitted development, so it needs a planning application even if it’s modest in size.
National permitted development limits
- Single storey rear: 3m deep (semi or terrace), 4m (detached), 4m high
- Two storey rear: 3m deep and at least 7m from the rear boundary
- Loft: 40 cubic metres (terrace) or 50 (semi, detached), no higher than the ridge
- Building Regulations: needed in almost every case, planning or not
These rules have further conditions and don’t apply in the same way in conservation areas or where rights have been removed. Your property needs to be checked.
Extension types we build in Arnold
Rear extensions
A kitchen diner or family room across the back of the house.
Side extensions
Uses side space or a passage to widen the ground floor or add a utility.
Double storey extensions
Space above and below in one project, for plots that can take it.
Loft conversions
A bedroom, office or en-suite in unused roof space.
Wrap around extensions
Rear and side combined for a larger open ground floor.
Orangeries and conservatories
Light and garden views from a year-round room.
Typical extension costs in Arnold
| Extension type | Typical size | Guide price (2026) |
|---|---|---|
| Single storey rear extension | 3m x 4m | £42,000 – £58,000 |
| Side extension | 2.5m x 5m | £38,000 – £52,000 |
| Double storey extension | 4m x 4m over two floors | £75,000 – £105,000 |
| Wrap around extension | L-shaped ground floor | £68,000 – £95,000 |
| Loft conversion | Dormer, one room | £35,000 – £55,000 |
| Orangery / conservatory | 3.5m x 3.5m | £28,000 – £45,000 |
Indicative guide ranges only, not quotes. Specification, ground conditions, glazing and finishes all affect the price. We confirm it in a written, itemised quotation once we have surveyed the house.
Timescales, stage by stage
Design comes first, then any planning decision (councils aim for eight weeks on householder applications), then Building Regulations. On site, a single storey extension typically takes 10 to 14 weeks and double storey or wrap around builds 14 to 20 weeks. We agree a schedule before work starts.
What happens after you get in touch
Site survey
We measure the house and garden and talk about how you want to use the space.
Options and route
We compare the realistic options and confirm the council and planning route for your address.
Drawings and quotation
Drawings for approval and an itemised written quotation.
Approvals
Planning or prior approval where needed, Building Regulations and any party wall notices.
Build and handover
Construction with stage inspections, then a walk-through and completion certificate.
See what we’ve built
Our gallery of completed extensions shows finished rear, side, loft and double storey projects, and the reviews page explains how customer feedback is checked against real jobs. At the survey, ask us for a past-customer reference if you’d like to hear from someone directly.
Arnold extension FAQs
Gedling Borough Council. Some addresses with an NG5 postcode are in Nottingham City Council’s area instead, so if you are near the boundary we confirm the council for your address before anything is submitted.
Sometimes, but the limits are tight. Under permitted development a two storey rear extension can project up to 3m and must stay at least 7m from the rear boundary, with other conditions on materials and roof pitch. Most two storey and side-and-rear projects end up needing a householder application.
Yes. Where the side of your house faces a road, extending beyond that side wall isn’t permitted development, so a planning application is needed. Visibility for drivers and the look of the street also come into the council’s decision.
Many rear dormer and hip-to-gable conversions may fall under permitted development, within 40 cubic metres of extra roof space on a terrace or 50 on a semi or detached house, depending on the property. Dormers facing the road, or homes in a conservation area, need an application. Building Regulations approval is needed either way.
As an indicative guide, single storey extensions are roughly £42,000 to £58,000 and double storey projects £75,000 to £105,000. The final price depends on size, finishes and ground conditions, and you get a written, itemised quotation after the survey.
We do. Inspections happen at set stages, such as foundations, drainage and structure, whether you use local authority building control or a registered approver. The completion certificate is handed over at the end.
Also covering nearby
Gedling and Carlton share Arnold’s planning authority. Hucknall is in Ashfield District Council’s area.
Not sure which option suits your house?
Book a free survey. We’ll compare the realistic options for your plot, confirm the planning route and give you a written quotation.