Draw a simple plan with fixed reference points
Sketch the room from above. Label the walls A, B, C and D and put the entrance at the bottom of the page if that makes the drawing easier to follow. A rectangle is a convenient starting point, but draw alcoves, boxing and changes of direction rather than hiding them in an overall measurement.
Write your unit at the top. A drawing marked “230” is ambiguous; “230 cm, measured between the current finished walls” tells the next person much more. Use the same unit throughout, and add the date so the drawing cannot be confused with a later version after work begins.
Measure only what you can reach safely from the floor. Do not remove panels, open electrical covers or stand on bathroom fittings. Your role at this stage is to give context for a professional survey, not expose concealed services.
Add the doors, windows and obstacles
For each door or window, record its width and its distance from a named corner. Draw the direction in which the door opens. A small room may have enough floor area on paper but still have a collision between a cupboard drawer and the entrance door.
Show radiators, pipes that are already visible, sloping ceilings, boxed-in sections and deep window sills. Note the height of an obstruction if you can measure it safely. A basin or mirror choice may be affected by an obstacle that is invisible on a simple floor rectangle.
| Record | Helpful label | Question to keep open |
|---|---|---|
| Room width | Wall A to C, current wall finish | Will preparation or new finishes change this? |
| Door | Opening on wall D; swings inward | Does the proposed layout keep it usable? |
| Window | Distance from corner B; sill height | Will furniture or a mirror obstruct it? |
| Boxing | Width, depth and visible position | What is inside, and can it be altered? |
Check the sketch for contradictions
Read each wall as a sequence. If a wall is 240 cm long and you have marked 70 cm to a window, a 100 cm window and 90 cm after it, the parts add up to 260 cm. Recheck the labels or measurement before passing it on. This arithmetic does not prove a wall is straight or square; it catches an obvious transcription problem.
For an approximately rectangular room measuring 240 × 180 cm, the footprint is 2.4 × 1.8 = 4.32 m². That is floor area, not a tile order and not usable standing space after fittings. The brief builder can do this limited calculation.
Take photographs that show the same wall labels and attach a short note if the room shape is difficult to understand. Keep the original measurements rather than replacing them with rounded numbers that fit your preferred layout.
Pass on observations without turning them into specifications
Label the drawing “preliminary homeowner measurements”. Ask who will verify the dimensions before products are ordered and before installation begins. In particular, furniture recesses, shower enclosure openings and bath positions need product-specific checks.
Bring the sketch to the design conversation alongside your priorities. A good first outcome is a list of feasible layouts and unanswered questions, not a basket of products chosen solely because their advertised widths add up.
If you already have a proposed drawing, use the layout review guide. It deals with how the room will work, rather than repeating the measurement exercise.
Sources & further reading
Prepared with AI assistance from the linked sources and Elegant Haven’s published service information. This guide helps you prepare decisions; product suitability and installation details need confirmation for your own room. It is not a record of a completed Elegant Haven installation or an expert sign-off.