Innovative, Sustainable and Affordable Modular Garden Rooms & Annexes

At Urban Spaces, we specialise in creating high-quality, sustainable, and beautifully designed modular garden rooms and annexes.

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Smarter, Faster, Sustainable Living Spaces Luxury Garden Rooms & Annexes Built for Life

At Urban Spaces, we design and build high quality garden rooms and annexes that redefine what’s possible for your home. Whether you need a stylish home office, a gym, a creative studio, or a fully self-contained annexe with kitchen and bathroom, we’ll deliver a bespoke solution that’s functional, beautiful, and built to last.

From our base in Hertfordshire, we serve homeowners across the UK — helping families unlock the full potential of their outdoor space with garden outbuildings designed for year-round comfort.

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A look at our range Our Bespoke Garden Rooms

At Urban Spaces, we specialise in creating high-quality, sustainable, and beautifully designed modular garden rooms and annexes.

Urban Space

Up to 30m² from £23,000

Extended living area up to 30m² to be used as a gym, office, bar, teen hangout or however you choose. Prices starting from £23,000.

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Urban Space Plus

Larger than 30m² from £37,500

For a larger living area (over 30m²). Similar to an Urban Space but gives you the extra space for additional uses - such as a bathroom, kitchen, sauna or store room. This space could also be designed as a private self-contained living space or annexe for a loved one. Prices start from £37,500, including planning and building regulations application fees and services.

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Our Process

From Design to Delivery

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Step 1 Consultation & Quote

Free consultation and detailed quote within 48 hours.

Step 2 Design & Planning

Bespoke layouts, planning guidance, and architectural drawings handled for you.

Step 3 Groundworks & Build

Modular construction for speed, precision, and minimal mess.

Step 4 Finishing Touches

Interiors, kitchens, bathrooms, electrics, plumbing, and landscaping, all carried out by professional and specialist tradespeople.

Step 5 Handover & Aftercare

Certified, warrantied, and supported long after installation.

Why Choose Urban Spaces?

What sets us apart:

Quality

Fully customisable builds with luxury finishes inside and out.

Quick

Receive a tailored quote within 48 hours and enjoy faster delivery & installation.

Specialists in Annexes

Complex builds including kitchens, bathrooms and utilities — supported by our in-house carpenters, plumbers, and electricians.

Premium Service

From planning and design to installation and aftercare, our first-class professional and friendly service means fast responses and total peace of mind.

Technology-Led

Pioneering the use of AI and modular construction tech for efficient, precise design and build.

Trust

With the UK’s longest structural warranty — 30 years — plus unrivalled after-sales care.

Sustainable Materials

We use recyclable ground screws instead of concrete foundations and SIPs (structured insulated panels) for the walls, floor and roof, meaning less disruption, faster builds, and a greener choice.

Landscaping

Unlike most providers, we also offer a landscaping service to transform the surroundings — patios, planting, decking — so your new garden space feels truly complete.

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Annexes and garden rooms Garden Rooms & Annexes – Built Around You

Whether you’re expanding your living space, creating a private retreat, or investing in multi-generational living, our builds offer:

40% faster build time than traditional extensions
30% more cost-effective 
Minimal disruption to your home and garden
No messy building site or long planning delays
Boosts property value by up to 20% 
Ideal for multigenerational living, home working, or generating rental income

With property costs soaring and traditional extensions often expensive, slow, and stressful, our garden rooms and annexe builds offer a revolutionary alternative

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Contact Us Get in Touch Today

Are you ready to transform your outdoor space with a stylish, sustainable, and cost-effective modular garden room or annexe? Contact Urban Spaces today for a free consultation and quote.

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