Modern Garden Rooms for Stevenage Homes
As Stevenage continues to grow, homeowners are increasingly looking for ways to maximize their outdoor space. Whether you live in a post-war terrace with a narrow garden or a detached property in one of the newer developments, an Adacon garden room provides a versatile, year-round solution. Our P600 system is a professional-grade modular building, manufactured in our specialist facility and delivered to your site in Hertfordshire.
We do not sell shipping containers. Our buildings are purpose-built steel-framed modules, roughly 13 square metres each, designed specifically for thermal efficiency and longevity. Because they are modular, they can be joined side-by-side or stacked, allowing you to create anything from a compact 3.8m x 2.4m office to a substantial multi-module garden annexe.
Typical Garden Room Configurations
Our modular approach means your building can grow with your needs. Common configurations for residential sites in Stevenage include:
- Single Module (13m²): Ideal for a dedicated home office, a nail salon, or a small treatment room. These fit comfortably into most suburban gardens in areas like St Nicholas or Pin Green.
- Double Module (26m²): A spacious layout often used for home gyms or large hobby rooms. By joining two modules, you create a wide-span interior that feels like a permanent house extension.
- Large Multi-Module (40m²+): For those with significant garden space, four or more modules can be combined to create a garden lodge, complete with internal partitions for a WC, kitchenette, and lounge area.
If you are unsure which layout fits your plot, you can use our free P600 configurator to arrange modules in 3D and see how they look with different window and door placements.
What Is Included as Standard?
Every Adacon building is delivered with a high-quality internal finish, meaning no messy plastering or painting is required once the unit is on-site. Standard features include:
- Fully insulated steel-frame structure (walls, floor, and roof).
- Plastered and painted internal walls.
- Durable laminate flooring throughout.
- Double-glazed uPVC windows and external doors.
- LED lighting and multiple power sockets.
- Exterior cladding in a range of colours, which can be selected wall-by-wall to suit your garden's aesthetic.
We also offer optional extras such as air conditioning for climate control, internal partitions for bathrooms or storage, and bespoke decking to finish the exterior look.
Indicative Pricing for Stevenage Projects
While every project is unique based on the number of modules and chosen finishes, most garden rooms in the Stevenage area fall within a price band of £15,000 to £35,000 (excluding delivery and VAT). A single-module garden office is at the lower end of this scale, while larger, multi-room configurations with added plumbing will sit at the higher end. We provide transparent, itemised quotes so you know exactly what you are paying for.
Delivery and Access in Hertfordshire
Stevenage is ideally located for our logistics team, with excellent access via the A1(M). Most deliveries reach the area via the A1 or the A602, allowing for straightforward transit of our P600 modules. However, the final stage of delivery requires careful planning.
In older parts of Stevenage with narrower terraced streets, we may need to coordinate specific crane requirements to lift the modules over existing structures or garden fences. For more open sites in areas like Symonds Green, a standard hiab delivery is often possible. It is the customer's responsibility to provide a level, prepared base (such as a concrete slab or ground screws) and to arrange the final electrical connection to the home's consumer unit.
Planning Permission and Building Regulations
Many garden buildings fall under "Permitted Development," meaning they do not require full planning permission if they meet specific height and placement criteria. However, rules can vary significantly depending on whether you live in a conservation area or if your property has had its permitted development rights removed. We always recommend checking with Stevenage Borough Council or your specific local authority before commencing work. Similarly, if the building exceeds 30 square metres or includes sleeping accommodation, Building Regulations will likely apply.
Why Choose Adacon?
Homeowners choose Adacon because we bridge the gap between flimsy timber sheds and expensive traditional brick builds. Our lead times are typically measured in weeks, not months, and because the majority of the work is done in our factory, on-site disruption is kept to an absolute minimum. We are established suppliers of modular buildings in Stevenage, offering a professional service that prioritises structural integrity and thermal performance.
Whether you are looking for garden offices to improve your work-life balance or a hobby room for the family, our system provides a permanent-feeling space that adds value to your home.
Related modular buildings
Design yours online — free
You can lay out a garden rooms in Stevenage yourself in a few minutes with the free Adacon P600 configurator: arrange the modules in 3D, pick your windows, doors and cladding colours wall by wall, and see an estimated price straight away. There is no obligation and no salesperson — save the design and we will pick it up from there.
Prefer to talk it through? Request a free quote and we will come back with a specification and price for your project.