One open room
The plan leaves the office as a single clear space, ready for a desk and storage chosen around the customer’s working routine.
+44 7966800519
costi@trj-construction.co.uk
BURY ST EDMUNDS, SUFFOLK · GARDEN OFFICE
A compact SIP office with cedar frontage, garden-facing glazing and air conditioning.
Costi and the TRJ team built Daniel’s garden office at the end of his garden in Bury St Edmunds. The 4 m × 2.5 m building combines a warm timber frontage with dark glazing and a rendered side elevation, creating a separate space for working from home.

01 / THE BRIEF
Daniel wanted a dedicated garden office. The compact footprint fits at the end of the lawn, while the glazed entrance looks back towards the garden and house.
The agreed finish pairs Western Red Cedar across the front with a rendered right-hand elevation. Anthracite external frames and black roof trim define the edges without competing with the garden setting.
Inside, the specification provides a simple open room with white walls, laminate flooring, power, lighting and an internet connection. A Wi-Fi-enabled LG air-conditioning unit was included for control of the room’s temperature.
02 / ORIGINAL FLOOR PLAN
The original dimensioned drawing shows the office at 4,000 mm × 2,500 mm externally, with an internal space labelled 3,650 mm × 2,150 mm.

The plan leaves the office as a single clear space, ready for a desk and storage chosen around the customer’s working routine.
The frontage combines 1,600 mm French doors with an 800 mm fixed glazed panel. The order specifies an overall frame height of 2,030 mm, with anthracite outside and white inside.

03 / SPECIFICATION & DETAILS
The signed specification sets out the structure, glazing, finishes and electrical installation. The photographs follow the build from its SIP shell through plastering and the exterior finish.
The white interior and garden-facing glazing keep the room light. The later fit-out photograph shows the wall-mounted air-conditioning unit installed.
The base, walls and roof are built from structural insulated panels. The order specifies screw-pile foundations at a standard depth of 1,250 mm.
Western Red Cedar finishes the front, with render on the right-hand side. The back and left-hand side were specified in cement-particle board. A membrane, battens and wall ventilation form part of the external wall arrangement.
A 1,600 mm set of uPVC French doors sits beside an 800 mm fixed frame. Both are specified at 2,030 mm high, with grey anthracite outside and white inside.
The agreed interior comprises plasterboard, skimming and white Dulux paint, with Howdens laminate flooring and white skirting. The gallery includes the interior during plastering and the final fit-out.
The specification includes an independent consumer unit with RCBO and surge protection, four double sockets, six internal downlights and three exterior downlights. Internet cabling and connection were also included.
A 2.5 kW Wi-Fi-enabled LG Standard Plus air-conditioning unit was specified. A black round gutter and downpipe manage roof rainwater, with the order locating the discharge behind the building.
04 / THE BUILD & COMPLETED EXTERIOR

01 · THE STRUCTURE
The early photographs show the base and SIP walls taking shape, followed by the roof structure and protective wall membrane.

02 · THE FIT-OUT
With the entrance glazed, the inside progresses through plastering and decoration, before the floor and final electrical fittings.

03 · THE FINISHED EXTERIOR
The completed exterior brings the cedar frontage, French doors, fixed glazing and dark roof trim together at the end of the lawn.
05 / CUSTOMER REVIEW
“Having Costi do our garden office was an excellent decision. From day 1 he was professional and incredibly timely with everything.”
Dan’s review praises the high standard of the garden office and says the project was completed within three weeks of first contact. He describes himself as delighted with the result.
Dan Heskett · Trustpilot · 1 November 2023
06 / PROJECT PHOTOGRAPHS
Select a photograph to see the complete image. Browse with the arrows, then choose Back to page to return.
07 / PROJECT QUESTIONS
This garden office was built in Bury St Edmunds, Suffolk.
The original dimensioned drawing shows an external footprint of 4.0 m × 2.5 m and an internal space of 3.65 m × 2.15 m.
The signed specification calls for a SIP base, walls and roof, Western Red Cedar on the front, render on the right-hand side, cement-particle board to the back and left side, and a 2.5 kW Wi-Fi-enabled LG air-conditioning unit.
In his Trustpilot review published on 1 November 2023, Dan Heskett describes the project as completed within three weeks of first contact and praises its high standard and the team’s professionalism.
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