How to Measure Your Space for a Custom Wardrobe | Derdi
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How to Measure Your Space for a Custom Wardrobe

A custom wardrobe is only as good as the measurements it's built from. Get them right, and your new built-in wardrobe fits like it was born in the room — because it was. Here is the exact 20-minute checklist we use before every quote.

Measuring a bedroom wall with a tape measure for a custom wardrobe installation

Twenty minutes with a tape measure now saves weeks of corrections later.

The good news about custom furniture: you don't need to be precise to the millimetre to get started. You need to be honest about your numbers — and the best way to be honest is to measure in more than one place, because rooms are never as square as they look.

What You'll Need

  • A metal tape measure — 5 m / 16 ft or longer
  • A notepad and pen — you will not remember the numbers
  • A spirit level, or a level app on your phone
  • A step ladder if you're measuring floor-to-ceiling
  • A helper to hold the other end (optional, but very helpful)

Step 1 — Measure the Height

Floors and ceilings are rarely perfectly level, so a single height measurement is never enough.

  • Measure in at least three points: left, centre and right of the wall
  • If the readings differ — and they usually will — write down all three
  • Use the smallest reading as the safe height for a floor-to-ceiling design
  • If the ceiling is sloped, measure the lowest point and note the slope

Step 2 — Measure the Width

Walls bow, and corners are rarely perfect 90-degree angles. Width gets the same three-point treatment:

  • Measure at the top, middle and bottom of the wall
  • Note all three readings — the smallest is your safe width
  • If you're filling a full wall, measure wall-to-wall at every point you can reach

Step 3 — Measure the Depth

  • Measure from the wall out to where you want the front of the wardrobe to sit
  • Leave a comfortable walkway: at least 70–90 cm (28–35 in) in front
  • Standard built-in depth is about 60 cm (24 in) with hinged doors, or 55–60 cm for sliding doors — but we build to your number, not the standard
Tape measure, pencil and wardrobe floor plan sketch on a desk

Write every reading down. Three numbers per wall, not one.

Step 4 — Check the Details People Forget

The things that ruin a perfect measurement are usually small:

  • Skirting boards / baseboards — they stick out 1–2 cm from the wall
  • Ceiling cornice / crown molding — reduces usable height at the edges
  • Door frames and the way doors swing open
  • Light switches, sockets, vents and heating pipes on the wall
  • Radiators or underfloor heating controls
Pro tip: take photos of the wall from 2–3 angles and include them with your measurements. A photo of the skirting board and ceiling line tells our designer more than a paragraph ever could.

Common Measuring Mistakes to Avoid

  • Measuring once and trusting it
  • Forgetting to include the skirting board depth
  • Ignoring a sloped ceiling
  • Measuring over thick carpet and guessing at the floor
  • Mixing centimetres and inches in the same drawing

What to Send Us

When you're ready, send our team:

  • Height, width and depth — three readings each, if possible
  • 2–3 photos of the space from different angles
  • Notes on anything you spotted: switches, pipes, cornice, sloped ceiling
  • Your preferred interior layout: hanging, shelves, drawers, shoe racks
  • The finish and colour you have in mind

Send these to our team and a designer will come back within 24 hours with a 3D drawing and a factory-direct quote — free and without obligation.

Get your free wardrobe quote

Send your measurements and photos — we'll come back within 24 hours with a drawing and a factory-direct price.

Request a Free Quote