Smallest deposits in the market. Longest warranty available.
At Urban Spaces, we specialise in creating high-quality, sustainable, and beautifully designed modular garden rooms and annexes.
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.
At Urban Spaces, we specialise in creating high-quality, sustainable, and beautifully designed modular garden rooms and annexes.
Luxury garden rooms perfect for offices, gyms, garden bars and relaxation spaces. Designed to remain under the 30m² threshold, meaning building regulations are usually not required which helps keep costs lower and installation quicker. Bathrooms and storage can still be included within these designs. Typical sizes range from around 4m×3m to 6m×4m.
For larger garden buildings where more internal space is required, such as large family rooms, gyms, entertainment spaces or annexe-style accommodation. Buildings over 30m² generally follow full building regulations, allowing more flexible layouts and larger designs.
Free consultation and detailed quote within 48 hours.
Bespoke layouts, planning guidance, and architectural drawings handled for you.
Modular construction for speed, precision, and minimal mess.
Interiors, kitchens, bathrooms, electrics, plumbing, and landscaping, all carried out by professional and specialist tradespeople.
Certified, warrantied, and supported long after installation.
What sets us apart:
Fully customisable builds with luxury finishes inside and out.
Receive a tailored quote within 48 hours and enjoy faster delivery & installation.
Complex builds including kitchens, bathrooms and utilities — supported by our in-house carpenters, plumbers, and electricians.
From planning and design to installation and aftercare, our first-class professional and friendly service means fast responses and total peace of mind.
Pioneering the use of AI and modular construction tech for efficient, precise design and build.
With the UK’s longest structural warranty — 30 years — plus unrivalled after-sales care.
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.
Unlike most providers, we also offer a landscaping service to transform the surroundings — patios, planting, decking — so your new garden space feels truly complete.
Whether you’re expanding your living space, creating a private retreat, or investing in multi-generational living, our builds offer:
With property costs soaring and traditional extensions often expensive, slow, and stressful, our garden rooms and annexe builds offer a revolutionary alternative
