Bespoke Garden Rooms in Billericay
Make room for work, exercise or time to yourself. We design and build bespoke garden offices, gyms, studios and garden rooms in Billericay and nearby areas, with the layout, glazing and finishes tailored to your space and how you want to use it.
Free site visit · 3D design before we build · Planning handled · Fully insured
Prefer to talk? Call Martin on 07989 446768
Designed around you
Start with a free, no-obligation design consultation. Tell us how you want to use your garden room and we’ll discuss the size, layout and finishes that suit your garden. From the first ideas to the finished build, we’ll guide you through the next steps. Before anything is built, you’ll see your garden room as a realistic 3D model, so you know exactly what you’re getting.
Included as standard
High-performance PIR insulation and award-winning aluminium doors and windows
Our vented roof design, which stops condensation and protects against damp and rot
Fully plastered and decorated walls with laminate flooring, ready to use on handover
Energy-efficient heating and cooling from a heat pump or Q-rads
Built to a standard closer to a house than a shed, with a life expectancy of 30+ years
What does a garden room cost?
Most of our garden rooms range from 3m x 3m to 10m x 5m, and typically cost between £15,000 and £60,000 depending on size and specification. Your free consultation gives you a detailed, itemised quotation. See products and pricing
Your local garden room builder
Molyneaux Design and Build is run by founder Martin Molyneaux here in Billericay. After 20 years in engineering and project management, Martin set up the business to design and build garden rooms properly: well engineered, compliant with building regulations, and finished to a high standard. You’ll deal with Martin from the first conversation to handover.
Do garden rooms in Billericay need planning permission?
In many cases, garden rooms in Billericay can be built under permitted development and do not require planning permission, provided they meet size, height, and usage rules. However, factors such as location, listed buildings, or intended use can affect this. We assess planning and building regulations as part of the design process and advise you clearly before any work begins — see our garden room regulations guide for more detail.
Areas we cover
We cover most of Essex, including Billericay, Brentwood, Shenfield, Ingatestone, Chelmsford, Wickford, Basildon, Stock and Rayleigh.
Ready to talk about your garden room?
Book a free, no-obligation design consultation and site visit, or call Martin on 07989 446768.