Create a bespoke garden annexe for family accommodation or guests, subject to the necessary planning and building regulation approvals. Pecasa designs, manufactures and installs bespoke garden annexes for parents, grandparents, adult children and long-term guests, with layouts planned around the people who will live in them.
A garden annexe is a separate building in the grounds of your home that provides additional accommodation linked to your household. Depending on the approved design, it can include a bedroom, living space, shower room, kitchenette, storage, heating or air conditioning and a private entrance.
We design around how the occupant will move through the space: low or level thresholds, wider doorways, easy-access showers, non-slip flooring, well-placed sockets and switches, good daylight and a straightforward route to the main house. These features can be built in discreetly.
Annexes use the same core system as our garden rooms: SIP walls, floor and roof made in our Watford factory, a 1.5 mm EPDM Flex-Proof roof, Cortizo aluminium doors and windows, and plasterboard walls with a tape-and-joint finish. Radix ground screws are our standard foundation system, subject to ground conditions and site suitability. Shower rooms, kitchenettes, air conditioning and other services are designed into each project and priced in your quotation.
A garden annexe typically takes 14–16 working days on site. Your quotation confirms the installation period for your project.
Bathrooms and kitchens need water supply, hot water, drainage, extraction and dedicated electrical circuits. The position of your existing drains affects the layout and cost, so we plan services at the survey. Site clearance, electrical supply connections to the building, water and drainage connections, skips and parking permits are priced separately.
Permitted development rights for household outbuildings do not cover separate, self-contained living accommodation or primary living accommodation such as a bedroom, bathroom or kitchen. Most annexes therefore need planning permission. The outcome depends on the proposed use, size, relationship with the main house and local policy.
Pecasa does not submit planning applications, but we can recommend an external planning consultant. Every application handled through our recommended consultant so far has been approved.
An annexe with sleeping accommodation needs Building Regulations approval. Drawings and approval are handled by an external specialist, either one we recommend or one you appoint, and you choose the building-control route.
An annexe may be assessed separately for council tax, and discounts or exemptions can apply in some circumstances. Pecasa does not give council tax advice; please check your position with your council and the Valuation Office Agency.
Every annexe is priced individually, because size, layout, bathroom and kitchen facilities, services and site conditions vary widely. You will also receive a free 3D design and a written, VAT-inclusive quotation, normally within seven days of your survey.
Usually, yes. Standard outbuilding rights do not cover self-contained living accommodation. The position for your property should be confirmed with your local planning authority.
Yes, if it includes sleeping accommodation. An external specialist prepares the drawings, and you choose the building-control route.
Yes, subject to the necessary approvals. These are designed in from the start because they affect drainage, ventilation and electrics.
Typically 14–16 working days on site. Your quotation confirms the installation period for your project.
Yes. Layouts can prioritise accessibility, easy-access showers, good lighting and a convenient route to the main house.
Contact us to book your free design consultation. A member of our survey team visits, measures your garden, checks access and discusses how you will use the room. It usually takes 10–30 minutes. You will also receive a free 3D design and a written, VAT-inclusive quotation, normally within seven days of your survey.