Design | Build | Sustain

SIP Garden Annexes

Purpose-designed annexe accommodation for independent living, multigenerational households, guests or long-term care.

Comfortable independent accommodation

A garden annexe usually needs more coordination than a simple garden room because it may include sleeping, cooking, bathing, drainage and permanent residential use. We design each proposal around its relationship to the main house, planning policy, accessibility, privacy and future household needs.

Granny annexes

Self-contained accommodation that keeps family close while maintaining independence.

Accessible annexes

Layouts planned around level access, circulation, adaptable bathrooms and long-term usability.

Guest accommodation

High-quality extra space for visiting family, friends or live-in support.

Independent living spaces

Compact homes with coordinated kitchens, bathrooms, storage and energy systems.

Design and approvals

We can coordinate measured information, concept options, planning drawings, supporting statements, Building Regulations design, structural calculations, energy assessments and SIP manufacturing information. The exact approval route depends on the site and proposed use.

Package options

Choose design-only support, a supply-only SIP kit, supply and structural installation, a weatherproof shell or a more complete turnkey package.

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Room Beyond AssistantAI-powered initial guidance
Welcome to Room Beyond. I can help with initial questions about SIP garden rooms, annexes and extensions. What space are you hoping to create?

AI responses may be inaccurate. Project-specific design and approvals require professional review.