How to Measure Under Stairs Space Properly
People often assume measuring under stairs space is complicated. In most cases, it is much simpler than that.
If you are getting started with Pro Spaces, the key measurement is the length of the usable space under the stairs, from the stair post to the wall.
That one measurement is usually enough to show which layout options fit and what the fixed prices are.
The main measurement you need
Measure the length of the space under the stairs, from the front stair post to the back wall.
This gives the clearest starting point for deciding whether a 3 drawer, 5 drawer, or 6 drawer layout is likely to work.
Use a tape measure and keep the line as straight as possible along the base of the usable area.
What to watch out for
A few things can affect the usable space:
- skirting boards
- radiators nearby
- door frames
- toilet walls under the stairs
- meters or services inside the space
- any uneven boxing or trim already in place
That does not automatically mean storage is not possible. It just means the final fitted solution may need to work around those details.
Do you need perfect measurements?
No. You do not need survey-level measurements just to get started.
The goal at this stage is not to produce technical drawings. It is simply to get an accurate enough starting measurement so you can see what layouts and price points make sense.
That is one of the reasons the process is faster than traditional quote routes.
Common measuring mistakes
- measuring too high up the slope instead of along the usable base
- guessing rather than using a tape
- forgetting to allow for obvious obstructions
- assuming all under stairs spaces are effectively the same
Even a simple, honest measurement is better than trying to estimate it by eye.
The easiest next step
Once you have that length measurement, you can use the Pro Spaces configurator to see which options fit your staircase and what they cost.
It is the quickest way to turn “we should probably sort that space out” into something concrete. If you are not sure which layout suits your space, our guide to 3 drawer vs 5 drawer vs 6 drawer under stairs storage will help.
