Re: Storage under stair steps
In a prior residence, I removed a stair tread and installed hinges between the riser and that tread. I opened it with pressure on the nose of the tread, but it made for kind of a noisy step (it was an old house so not unexpected to have a noisy step). This particular staircase was between two walls; if the stair is open on one side and the balusters meet the tread this probably won't work.
A better latching mechanism would be to install a spring and a hidden latch. Slide a thin object into the gap between the tread and the riser above to release the latch; the spring lifts the tread open.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.