- House Extensions
House Extensions Manchester
House Extensions – Rear, Side & Double-Store
Dunhil Constructions LTD specialises in high-quality house extensions that transform homes across the UK. Whether you need extra living space for a growing family, a new kitchen-diner, or additional bedrooms, our expert team delivers seamless rear, side, and double-storey extensions with minimal disruption.
- What We Offer
Types of House Extensions We Offer
Rear Extensions
Popular for creating open-plan kitchen and living areas that connect beautifully with the garden.
Side Extensions
Ideal for adding width to semi-detached or detached properties without losing valuable garden space.
Double-Storey Extensions
The most space-efficient option, adding both ground and first-floor rooms (e.g., extra bedrooms and bathrooms) while sharing foundations and roof structure for better value.
Benefits of Adding a House Extension
A well-designed extension can increase your property value by 10–30% depending on location and quality. It provides much-needed space without the cost and stress of moving house. Our extensions are built to current Building Regulations, with excellent insulation, energy-efficient glazing, and thoughtful design that blends with your existing home.
Our Proven Process
A well-designed extension can increase your property value by 10–30% depending on location and quality. It provides much-needed space without the cost and stress of moving house. Our extensions are built to current Building Regulations, with excellent insulation, energy-efficient glazing, and thoughtful design that blends with your existing home.
- What We Offer
What We Offer in Residential New Builds
We construct everything from individual custom homes to small and medium-scale residential developments. Our projects include 2–5 bedroom family houses, luxury detached properties, and multi-unit residential buildings. Every home is designed around your lifestyle, with open-plan living spaces, modern kitchens, luxurious bathrooms, ample natural light, and smart home-ready features.
We focus on creating homes that are not only beautiful but also practical, energy-efficient, and future-proof. From the foundation to the roof, every element is carefully planned and executed by our experienced team.
Our Groundworks Process
All groundworks comply with current Building Regulations (Part A – Structure) and NHBC standards where applicable.
Typical Costs in 2026
A typical 30–60m² double-storey extension ranges from £60,000 – £120,000+ depending on specification and location.
Single-storey rear/side extension
Double-storey extension: £1,800 – £3,200 per m² (often more cost-effective than two separate single-storey builds)
A typical 30–60m² double-storey extension ranges from £60,000 – £120,000+ depending on specification and location.
- our process
Reliable Service from Start to Finish
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- step 01
project planning
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- step 02
site execution
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- step 03
Quality Inspection
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Why Homeowners Trust Dunhil
With 25+ years’ experience, full insurance, and a strong track record of successful extensions in Manchester and beyond, we deliver projects on time and on budget. Our work includes structural alterations (RSJ installation where needed), high-quality finishes, and seamless integration with your existing property.
Whether you’re planning a modest side return or a substantial double-storey extension, we provide transparent fixed-price quotes and complete peace of mind.
- contact Us
Ready to expand your home?
Get in touch with Dunhil Constructions LTD for a free, no-obligation site visit and detailed quote. We proudly serve Manchester, Birmingham, London, and surrounding regions.