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Summer House Design and Installation

Bespoke summer houses and garden rooms in Eastbourne and across East Sussex. Cranch Carpentry builds insulated timber garden buildings for offices, studios and relaxing spaces.

Why Choose Our Summer Houses?

A well-built summer house can transform your garden. It can give you extra space to work, relax or entertain without the cost and disruption of an extension.

Many off-the-shelf garden buildings are flimsy, hard to heat, and not built for long-term use. We design and build summer houses that solve these problems by being solid, insulated and tailored to your needs.
You get a skilled local team who handles everything from design to installation, creating a space that looks good and works perfectly in every season.
Custom garden rooms designed around your space and purpose
Fully insulated and weatherproof for year-round comfort
Durable timber construction that lasts
Clear, upfront pricing with no hidden extras
Careful, reliable work from start to finish
Covering Eastbourne, Seaford, Hailsham, Lewes, Bexhill, Polegate and nearby areas
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What We Do

We build a wide range of summer houses and garden rooms across East Sussex. Whether you need a peaceful retreat or a fully equipped workspace, we deliver spaces that are warm, secure and built to last.

Custom Garden Rooms and Studios

We design and build bespoke garden rooms tailored to your space and lifestyle, from small retreats to spacious family studios.

Outdoor Offices and Hobby Spaces

We create insulated, wired and weatherproof garden offices and hobby rooms that are comfortable to use year-round.

Timber-Framed Summer Houses

We construct sturdy timber-framed buildings that can be finished in a style that suits your home and garden.

Insulated and Weatherproof Structures

All our buildings are built with high-quality materials, weatherproof cladding and full insulation for warmth, comfort and longevity.

Garden Room Upgrades and Refurbishment

We can refurbish or upgrade older summer houses, adding insulation, new windows or doors, and modern finishes.

Bespoke Design Features

Need built-in storage, decking or exterior lighting? We can include custom details that make the space truly yours.

Our Process

We keep the whole process simple and stress-free.

1. Consultation and Site Visit

We visit your property to measure the space, discuss your ideas and understand how you want to use your new garden building.

2. Detailed Quote and Plan

We send you a clear written quote with timescales, materials and costs so you know exactly what is included.

3. Installation and Finishing

We build your summer house carefully, using durable materials and ensuring it is insulated, secure and weatherproof.

4. Final Check and Aftercare

We walk through the finished building with you and give simple guidance to help you maintain it for years to come.
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Where We Work

Cranch Carpentry is based in Eastbourne and builds summer houses throughout East Sussex. We regularly work in Hailsham, Seaford, Lewes, Bexhill, Polegate, Heathfield and nearby areas. Whether you want a small garden retreat or a fully equipped outdoor office, we provide reliable local service and lasting craftsmanship.

Frequently Asked Questions

Got a question about how we work, what we build or where we travel? Here are some quick answers.

How much does a summer house cost?

It depends on the size, design and features. We give clear, detailed quotes upfront so you know exactly what to expect.

Do I need planning permission for a summer house?

Most garden buildings do not need planning permission, but we can advise you based on your property and local rules.

Are your summer houses insulated?

Yes. All our buildings are fully insulated to stay warm in winter and cool in summer, making them comfortable year-round.

How long does it take to build a summer house?

Most summer houses take two to three weeks from start to finish, depending on size and design. We confirm timings as part of your quote.

Can you build a summer house for use as an office?

Yes. We often build garden offices complete with insulation, electrics and secure doors and windows.

Can you upgrade an existing summer house?

Yes. We can refurbish existing buildings with new insulation, cladding, flooring, windows and doors to improve comfort and lifespan.

Contact Your Local Summer House Builder

Looking for a trusted local team to build your summer house? Contact Cranch Carpentry today to talk about your project. We are happy to visit your property, share ideas and provide a clear, no-obligation quote.
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