What Is It?
A site measurement sheet is a structured document used to record accurate on-site dimensions before fabricating or installing joinery — doors, windows, staircases, fitted units, wardrobes, or worktops. It captures room and opening dimensions taken at several points, floor and wall levels, plumb readings, diagonal measurements to check for square, the position of services and obstructions to avoid, and a sketch of the space. It is the reference document the workshop or installer relies on, so it must be unambiguous, dated, and tied to a specific job.
About This Template
Joinery is made to fit a space that is rarely square, level, or plumb — and a component fabricated to the wrong figures is scrap. A site measurement sheet is where a carpenter or joiner captures the real dimensions of an opening or space before anything is cut. It records widths and heights at multiple points, checks for level and plumb, takes diagonals to test for square, and notes the services and obstructions that affect the work. A disciplined measurement sheet, with a clear sketch, is the difference between joinery that drops straight in and an expensive return visit.
When to Use
- Before fabricating bespoke joinery in the workshop, where the component must fit an existing opening or space
- When templating for fitted furniture, wardrobes, or worktops that will be cut to the room
- Before ordering or hanging doors and windows, where opening sizes and squareness determine the fit
- When pricing a job, so the quote is based on real dimensions rather than assumptions
- When surveying a staircase, where rise, going, and headroom must be measured precisely
- Before second-fix or installation work, to confirm site conditions match what was assumed at fabrication
What to Include
- Job reference, customer or site name, address, and the date the survey was taken
- Name of the person who took the measurements
- Room or area identification, with each opening or space clearly labelled
- Width measurements taken at the top, middle, and bottom of each opening
- Height measurements taken at the left, centre, and right of each opening
- Diagonal measurements across openings and units to check for square
- Level and plumb readings for floors, walls, and reveals, noting the direction and extent of any deviation
- Position of services and obstructions — sockets, switches, pipework, radiators, vents — to be worked around
- Finished floor level, or a note if floor finishes are still to be laid, since this affects component heights
- A clear sketch or elevation of the space with dimensions marked, plus space for additional notes and assumptions
Tips
Always measure openings at three points across the width and three down the height — walls and reveals are rarely parallel, and the smallest dimension usually governs the component size
Check diagonals on every opening and unit: if the two diagonals differ, the opening is out of square and the joinery must be designed to accommodate it
Confirm whether finished floor finishes are down before measuring heights — measuring to a bare subfloor and forgetting the tile or timber finish is a common and costly error
Draw a clear sketch and mark every dimension on it; a labelled drawing is far harder to misread back in the workshop than a column of numbers
Note your assumptions explicitly — which way a door swings, whether a wall will be plastered, where a scribe is expected — so the workshop is not guessing
