Could someone direct me to a script that will rez and delete a demo?

[Extraneousnomenclature]

I'd like prospective buyers to be able to rez one of my houses for a couple of minutes to inspect it.

Then the demo house should delete itself.

One caveat I foresee is the possibility that someone could pull the script out of the house while it was rezzed. Would making the demo house no mod prevent this?

[Rolig Loon]

Nobody can pull the script out of a house unless they own it.  So long as you are the owner, there's no problem.  If you want to sell a L$0 demo version of the house, though, they could well remove the script or at least disable it.  Making the house no mod will not prevent that. There are several ways around the problem, reasonably well known to scripters, but none is 100% foolproof.  If you hedge your bet by building a deliberate flaw into the demo, though, you reduce the chances that anyone will bother to steal it.  That's the strategy that people who design clothing, skins, and shapes use.    You may be able to buy a ready-made secure system in Marketplace, but I would advise hiring a scripter to write you something that meets your specific needs. Post in the InWorld Employment forum.  Do not trust a script that you find in some freebie bin and just pop into your build. 

[Lindal Kidd]

The usual way to display houses for sale is to either:

1.  Have enough land that you can plop down models of all your homes, or

2.  Have a big platform and a vendor that will temporarily rez a copy of the house.  It's removed when either someone makes another selection from the vendor, or after a set time period, say 15 or 20 minutes.