Double Storey Rear Extension Nottingham
A double storey rear extension adds space to the back of your home across two floors at once. It is one of the most cost effective ways to gain a bigger kitchen or living area downstairs and an extra bedroom or bathroom upstairs.
Our Nottingham team handles the whole build, from first drawings and planning to the final coat of paint, with clear pricing and a fixed timeline you can plan around.
- Two floors of space in one build
- Structural design and building control handled
- Local team with 15+ years of experience
A two floor extension across the back of your home
A double storey rear extension projects out from the rear wall of your house and rises to two full storeys. Downstairs you gain room for an open plan kitchen and dining space, a larger living room, or a utility and study. Upstairs you gain a new bedroom, a bigger master suite, or an extra bathroom.
Because both floors are built on the same foundations and under one roof, you get roughly double the floor area for a much smaller jump in cost than building two single storey extensions. It suits terraced, semi detached, and detached homes across Nottingham where there is enough garden depth to build into.
This option is best for growing families who need more of everything at once, homeowners planning to stay long term, and anyone who wants to add real value rather than move house. It works especially well when your existing layout feels cramped both up and downstairs.
Best For
Families needing extra bedrooms and a bigger kitchen, homes with a decent rear garden, and owners looking to maximise value per pound spent.
Typical Timeline
Most double storey rear extensions take 12 to 18 weeks on site, plus planning and design time beforehand.
Why choose a double storey rear extension
- Double the space for less – two floors on one set of foundations gives far better value than two separate builds.
- Bigger kitchen and living area – open up the ground floor for a modern kitchen diner that opens onto the garden.
- Extra bedroom or bathroom – add the master suite or family bathroom your home has been missing.
- Strong return on investment – adding usable floor area on two levels is one of the best ways to raise your home’s value.
- Avoid the cost of moving – stamp duty, agent fees, and removals often cost more than the space you gain by moving.
- One disruption, twice the result – a single build project delivers changes on both floors at the same time.
How your project runs from start to finish
Free Survey
We visit, measure up, and talk through what you want from both floors and your budget.
Design and Drawings
Our architect prepares plans for the layout, elevations, and structure across both storeys.
Planning and Approvals
We submit for planning permission or a lawful development certificate and handle building control.
Fixed Quote
You receive a clear itemised quote and an agreed start date with no hidden extras.
Groundwork and Structure
Foundations, walls, steels, and roof go up, weatherproofing the shell before we move inside.
Fit Out
Plastering, electrics, plumbing, flooring, and decoration bring both floors to a finished standard.
Handover
We complete a final walk round, hand over certificates, and sign off the works with you.
Double storey rear extension prices
| Size and Type | Approx Floor Area | Guide Price (2026) |
|---|---|---|
| Small double storey rear (single width) | Up to 20 sqm total | £60,000 – £80,000 |
| Medium double storey rear | 20 – 35 sqm total | £80,000 – £110,000 |
| Large full width double storey rear | 35 – 50 sqm total | £110,000 – £150,000 |
| Premium finish or complex site | Varies | £150,000+ |
Guide ranges only. Your final price depends on size, ground conditions, spec, and finishes. We provide a fixed written quote after your free survey.
Planning and building regulations
What you need to know
Double storey rear extensions usually need planning permission, as permitted development rights for two storey rear builds are limited and often restricted on semi detached and terraced homes. There are rules on how far you can project, the 45 degree rule protecting neighbours’ light, and boundary distances.
All work must meet building regulations for structure, insulation, fire safety, and drainage. If you build near a shared boundary, a Party Wall agreement with your neighbour will normally be required. We manage the full planning and approvals process for you, and our 100% planning success rate means you are in safe hands.
📋 We Handle Everything
Drawings, planning submission, building control, and Party Wall notices are all managed by our team so you can relax.
Double storey rear extensions across the local area
Not sure if we cover your street? Give us a call and we will let you know right away.
Double storey rear extension gallery
What our customers say
We added a double storey rear extension for a new kitchen and a bedroom above. The team kept us informed the whole way and finished on schedule. The extra space has completely changed how we live.
Great value compared with moving. We got a huge open plan living space and an extra bathroom upstairs. Planning was all handled for us and the brickwork matches the original perfectly.
Professional from survey to handover. The fixed quote gave us confidence and there were no surprise costs. Our home feels twice the size for a fraction of what a bigger house would have cost.
Double storey rear extension questions
In most cases yes. Permitted development rights for two storey rear extensions are limited and are often restricted on semi detached and terraced homes. We assess your property and manage the full planning application for you.
As a guide, most projects fall between £60,000 and £150,000 depending on size, ground conditions, and finish. You gain roughly double the space for a much smaller jump in cost than two single storey builds. We provide a fixed quote after your free survey.
Most double storey rear extensions take 12 to 18 weeks on site, plus design and planning time beforehand. We agree a clear timeline with your fixed quote so you always know what to expect.
Yes, most homeowners stay put throughout. Because the new structure is built onto the rear, we only break through to the existing house at set points. We keep dust and disruption to a minimum and tidy up each day.
If you build close to or on a shared boundary, a Party Wall agreement with your neighbour is normally required. We handle the notices and paperwork as part of managing your project.
Adding an extra bedroom and a bigger living space on two floors is one of the best ways to raise a property’s value. The exact figure depends on your area and finish, but the gain often covers a large share of the build cost.
Ready to double your space?
Book a free site survey and get a clear, no obligation quote for your double storey rear extension.