+44 7966800519
costi@trj-construction.co.uk
GARDEN ROOMS · PROJECTS BY PURPOSE
A garden room with the facilities to make it work for you.
Explore completed garden buildings with showers, WCs and bathrooms alongside their main living, working or training space. See how the layout and services fit together in real TRJ projects.
ROOM WITH BATHROOM · CASE STUDY
Explore an 8.3 m × 4.02 m cedar SIP garden office in Watford, with shower room, kitchenette, rooflights and underfloor heating. View original plans and build photos.
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ROOM WITH BATHROOM · CASE STUDY
Independent living close to family, with practical access and bathroom facilities. Building work by TRJ Construction Ltd for Garden Spaces in Berkshire.
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ROOM WITH BATHROOM · CASE STUDY
A separate place for a teenager to relax and spend time with friends. Building work by TRJ Construction Ltd for Garden Spaces in Barnet, London.
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ROOM WITH BATHROOM · CASE STUDY
Family games, a kitchenette and a shower room in one generous studio. Building work by TRJ Construction Ltd for Garden Spaces in Dulwich Village, London.
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ROOM WITH BATHROOM · CASE STUDY
Explore an 8 m × 5 m garden gym and office with ensuite in Tunbridge Wells. Building work by Costi and the TRJ team for Garden Spaces.
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ROOM WITH BATHROOM · CASE STUDY
Treatments by day. Family time in the evening. Building work by TRJ Construction Ltd for Garden Spaces in Borehamwood, North London.
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ROOM WITH BATHROOM · CASE STUDY
Explore a bespoke SIP garden gym in Chessington, Surrey, with sauna, shower room and a 5 m roof lantern. A direct TRJ Construction design-and-build project.
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ROOM WITH BATHROOM · CASE STUDY
A separate living space that keeps a young adult close to family. Building work by TRJ Construction Ltd for Garden Spaces in West Sussex.
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ROOM WITH BATHROOM · CASE STUDY
A dedicated workspace with the everyday facilities close at hand. Building work by TRJ Construction Ltd for Garden Spaces in Lymington, Hampshire.
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ROOM WITH BATHROOM · CASE STUDY
A garden workplace for a business and its staff. Building work by TRJ Construction Ltd for Garden Spaces in Englefield Green, Surrey.
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ROOM WITH BATHROOM · CASE STUDY
A SIP garden office in Ongar with a separate kitchen, shower room, Thermowood frontage and LG air conditioning. Explore the original plan and finished photos.
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ROOM WITH BATHROOM · CASE STUDY
A poolside retreat with a shower room and sheltered deck. Building work by TRJ Construction Ltd for Garden Spaces in Essex.
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ROOM WITH BATHROOM · CASE STUDY
A Havering garden room with an ensuite shower, cedar frontage and composite deck. Building work by Costi and the TRJ team for Garden Spaces.
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ROOM WITH BATHROOM · CASE STUDY
A separate treatment room, a welcoming entrance and facilities for appointments. Building work by TRJ Construction Ltd for Garden Spaces in Finchley, North London.
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ROOM WITH BATHROOM · CASE STUDY
A yoga studio and a private treatment suite within one bespoke building. Building work by TRJ Construction Ltd for Garden Spaces in Tunbridge Wells, Kent.
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ROOM WITH BATHROOM · CASE STUDY
A substantial SIP barn built to the client’s own design. Building work by TRJ Construction Ltd for Garden Spaces in Hertfordshire.
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ROOM WITH BATHROOM · CASE STUDY
A courtyard transformed into a cookery classroom. Building work by TRJ Construction Ltd for Garden Spaces in Bedmond, Hertfordshire.
Explore this project ↗Water, waste drainage, ventilation, electrical provision and access all form part of the brief. Tell us how you will use the room and which facilities you need, with photographs of the garden and access.
Discuss your garden room ↗Bathroom & shower-room options ↗ · All garden-room uses ↗ · Our build process ↗
TRJ Construction Ltd is a specialist Structural Insulated Panel (SIP) construction company delivering high-performance garden rooms and granny annexes across North London, Hertfordshire, Buckinghamshire and surrounding counties.
Garden rooms use 125 mm SIP walls with 150 mm SIP roof and floor panels. Granny annexes use 150 mm SIP panels for the walls, roof and floor. Our buildings are finished with your chosen cladding or render for durability and long-term use.
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