Single-storey rear
Open up the back of the house — kitchen-diners, garden rooms, side-returns merged into one continuous space.
- Build time
- 10–14 weeks
- Investment
- From £55k
Extensions
House extensions in Stratford-upon-Avon, Solihull and across the West Midlands.
At Aspro Contractors, our team of expert builders provide tailored house extensions for customers based in Stratford-upon-Avon, Solihull and around the West Midlands. With extensive experience in construction, we manage every extension from start to finish — focusing on the finer details of each project and bringing the same level of passion to every build.
Types of extension
Pick the footprint that suits your home.
We'll tell you on the first visit which option gives you the best return — not just the biggest invoice.
Double-storey rear or side
Add a bedroom and en-suite above a new kitchen or living space — the most cost-efficient way to add square footage.
- Build time
- 16–22 weeks
- Investment
- From £95k
Wraparound / L-shaped
Combine a side-return and rear extension into one footprint — transformative for Victorian and Edwardian terraces.
- Build time
- 14–20 weeks
- Investment
- From £85k
— Property extensions to suit your needs —
Whether you want to increase the living space or redesign the interior of your Solihull or Stratford-upon-Avon property, there are many reasons why our customers hire us for house extensions. Our builders offer an initial design consultation to gain a clear understanding of the vision you have for your home before we set about bringing it to life.
We construct a range of different home extensions, including:
- Rear Extensions
- Side Extensions
- Single-storey Extensions
- Two-storey Extensions
- Kitchen Extensions
- Wraparound Extensions
Whether it's rear extensions, side extensions or wraparounds, each type of extension project can bring excellent value to our clients.
If you feel uncertain about which extension is right for you, our builders are happy to offer recommendations based on the unique specifications of your home.
— Bespoke home extensions
A one-stop-shop approach to your extension.
At Aspro Contractors, our builders do everything they can to provide a 'one-stop-shop' approach to domestic and commercial construction. We offer a knowledgeable service for all aspects of our house extensions. This involves completing the following works commonly associated with extension projects:
- Brickwork
- Carpentry & Joinery Services
- Excavation & Groundworks
- Flooring Installation
- Foundation Installation
- New Doors
- New Windows
- Roofing Services
- Structural Work
As part of our commitment to achieving ultimate customer satisfaction, Aspro Contractors can source all requested equipment and materials for your house extension. If you want us to use certain brands for your project, our team is happy to facilitate that. Thanks to our detail-orientated approach, we produce amazing results for clients in Stratford-upon-Avon, Solihull and the surrounding Midlands.
Send an enquiry today
Planning & design
The bit most builders try to skip.
We'd rather spend an extra fortnight at drawing stage than find out at first-fix that the steel won't sit on the wall. Our process front-loads the boring decisions so site stays calm.
- 01
Permitted Development check
We confirm whether your scheme falls under PD or needs a full householder application — and what the realistic outcome is in your council.
- 02
Architect coordination
We work alongside trusted Midlands architects (or yours), feeding back buildability and cost as the drawings evolve.
- 03
Structural engineering
Padstones, beams, raft details and lateral restraint specified in writing before bricks are ordered.
- 04
Building Regulations
Full plans submission to your local Building Control or an Approved Inspector — inspection schedule agreed upfront.
- 05
Party Wall surveying
Notices served, surveyors instructed and award in place before any line is dug closer than 3m to a boundary.
- 06
Fixed-price quote
A line-item proposal with provisional sums clearly flagged so there are no nasty mid-build surprises.
Build timeline
A typical 4-bed rear extension, week by week.
Week 0
Site visit & feasibility
We walk the property with you, sketch the brief, give honest cost ranges and flag planning risks before you spend a penny on drawings.
Week 1–6
Architect & approvals
We coordinate with our architect partners on planning drawings, structural calcs, and Building Control submissions. Party Wall notices served where needed.
Week 7
Mobilisation
Welfare, hoarding, scaffold, skip and material call-offs scheduled. Neighbours informed in writing before the first vibration.
Week 8–10
Substructure
Excavation, foundations, drainage diversions and oversite. Building Control inspect at trench, oversite and DPC stages.
Week 11–14
Superstructure & roof
Brick and block to wall plate, steel installed and padstones bedded, roof structure on, watertight before second-fix trades start.
Week 15–18
First fix to handover
MEP first fix, plaster, second fix, decoration, snag, deep clean. You get a handover pack with certificates and warranties.
Project example
Wraparound extension, Solihull semi.
A 1930s semi with a dark galley kitchen and a disconnected utility. We delivered a 38m² wraparound under Permitted Development with a Lawful Development Certificate, opening the rear into a kitchen-diner with a 6m steel goalpost and a flush rooflight running the spine of the new roof.
- 16-week programme — handed over 4 days early
- Origin OB-49 bi-folds with bonded grey aluminium
- Underfloor heating on insulated screed, 75mm PIR
- Firestone EPDM warm-deck flat roof, 25-year guarantee
- Full Building Regs sign-off + 10-year workmanship guarantee
Footprint added
38 m²
Value uplift est.
+22%
FAQs
Extensions, asked & answered.
Everything we get asked at the first site visit.
Do I need planning permission for an extension?+
Many single-storey extensions fall under permitted development, but it depends on size, position and your property. We'll tell you honestly at the consultation whether you need a full application.
How long does a typical extension take?+
A single-storey rear extension is usually several weeks to a few months depending on size, groundworks and finish. We give a realistic programme with your quote.
Will you handle building regulations?+
Yes — we manage building-control sign-off as part of the project.
Can you match the existing brick and finish?+
Yes. We source materials to match your existing property so the extension reads as part of the original build.
Thinking about an extension? Let's walk the site.
Free site visit across Solihull, Stratford-upon-Avon and the wider Midlands.
FMB-approved ContractorsPublic Liability CoverageEmployer Liability CoverageWorkmanship GuaranteesLevel 3 NVQ Carpentry
Also from Aspro
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Full property refurbishments delivered to a high standard.
Renovations
Complete home renovations, room by room or whole-house.
New Homes
Bespoke new build houses from foundations to finish.
Building Services
Bricklaying, plastering, carpentry, roofing and groundworks.
Plant Hire
Diggers, dumpers and site machinery — with or without operator.
Areas we cover