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Timber-frame extension

Architecture & construction

A timber extension.
From drawing to site.

A new room opening onto the garden, extending the existing house. A project connecting spatial design, structure, the building envelope and interior works.

Timber frameBio-based insulation · passive approachNo concrete foundations
Cladding and windows installed · work in progress
Cladding and windows installed · work in progress

Four stages, from drawings to finishes.

Project drawings and site photographs · click to enlarge

Project elevation drawing.

01Planning permission & drawings

Define the footprint, volumes and elevations. Prepare the drawings and planning application, taking the existing building into account.

3D model of the timber structure.

02Technical design

Translate the architecture into construction details: timber structure, connections, wall build-ups, insulation and service routes.

Timber frame assembly on site.

03Structure & building envelope

Prepare the supports, assemble the floor and frame, then build the roof. Coordinate the enclosure with the installation of external windows and doors.

Floor tiling, with finishes in progress.

04Interior works & finishes

Integrate insulation, services and heating. Install interior linings and finishes to turn the structure into a living space.

A closer look — 5 more construction photographs
Timber joists before the floor is closed.

The floor

Timber joists before the floor is closed.

Membrane installation, with edges and upstands in progress.

The roof

Membrane installation, with edges and upstands in progress.

Insulation between the timber studs.

The walls

Insulation between the timber studs.

Plasterboard and surface preparation.

The interior

Plasterboard and surface preparation.

Heating runs being installed before covering.

Underfloor heating

Heating runs being installed before covering.

Exterior: current stage and proposed finish.

Current construction stage

Current construction stage

Supplied photograph, retouched to remove people and temporary clutter.

Proposed exterior

Proposed exterior

Timber terrace and landscaped surroundings: an illustration of the intended result.

Final interior design visualisation

The envisioned finished space.

A living space opening onto the garden, with a lounge, dining area and kitchen alongside the large windows.

Final interior design visualisation — Lounge and dining area
Lounge and dining area
Final interior design visualisation — View towards the kitchen
View towards the kitchen

Design visualisations showing the intended interior, not photographs of completed work.

3D view: design intent. Construction photographs, with finishing work in progress. The facade, frame and tiling photographs have been retouched to remove people and temporary clutter.