From £30k–£55k+
Single-Storey Extensions in the West Midlands
Open up the back, side or wrap-around at ground level to create the kitchen-diner, family room or utility your home is missing.
Benefits
Why homeowners choose single-storey extensions
- Open-plan flow and far better daylight
- Often achievable under permitted development
- Most common extension type — well-understood programme
- Typically less disruption than double-storey work
Who it suits
- Families wanting a true kitchen-diner
- Period homes with awkward galley kitchens
- Anyone needing utility, WC or playroom space
- Homes where bedrooms upstairs are sufficient
Cost guidance
What a single-storey extensions typically costs
Planning-stage range: from £30k to £55k+. What pushes a project up or down:
- Size and structural complexity
- Amount of glazing — sliders, bifolds, rooflights
- Kitchen specification and appliances
- Ground conditions and drainage
- Finish level — flooring, joinery, ironmongery
- Planning and design fees (separate from build cost)
Householder planning fees and professional design costs are separate from build cost. We make these visible from the start, not buried in the build.
Planning & regulations
Planning and building regs
Many single-storey rear and side extensions fall within permitted development, but eligibility depends on the property, site and proposal. Even where planning is not required, building regulations approval is needed.
Useful reading:
Process
How a single-storey extensions project runs with us
1
Free initial chat
Postcode, brief and rough budget. We come back with a planning-stage estimate and next steps.
2
Survey and concept design
On-site measure, brief workshop and concept tied to the budget.
3
Planning and building regs
Applications, structural calcs and building control sign-off coordinated end-to-end.
4
Build
One site team, weekly updates, kitchen and glazing coordinated for you.
5
Handover and aftercare
Snagging, certificates and a workmanship warranty issued at completion.
Recent work
Featured single-storey extensions projects
FAQs
Frequently asked questions
How much does a single-storey extensions cost?
Indicative planning-stage range: from £30k to £55k+. Final pricing depends on size, structure, glazing, kitchen spec, ground conditions, drainage and finishes. Full cost guide.
Do I need planning permission for a single-storey extensions?
Many single-storey rear and side extensions fall within permitted development, but eligibility depends on the property, site and proposal. Even where planning is not required, building regulations approval is needed. Read the planning guide.
How long does a single-storey extensions take?
Most single-storey projects take 10–14 weeks on site. Double-storey and wrap-around projects typically take 16–22 weeks. Planning and design lead in usually adds 8–14 weeks.
Will you handle planning and building regs?
Yes — applications, structural calcs and building control sign-off are coordinated as part of our design-to-build process.
Do you cover my area?
We work across the West Midlands including Birmingham, Solihull, Wolverhampton, Dudley, Walsall and Coventry.
Next step
Get a planning-stage estimate
Tell us about the project. We will come back with realistic budget guidance and likely process — no hard sell.