Hello Peace and welcome to the wonderful world of renting
Just some thoughts on your post:
a) Zero tolerance of griefing.
good luck with that. Griefing comes in many ways. The obvious stoppers are having anything other than resident plots turned off for object entry and build. But you'll still get low level stuff like people harrassing your tenants, using their prim/poseballs, using their house etc as a meeting place (all of which I've had)
b) No truck with the fiction that land buyers own anything -- this would be rental-only.
Too true, but leasing (as I prefer to call 'buying') is separate from 'renting' - you will need to make clear distinction between the two. In my experience, without some major draw, expect more renters than lessees
c) A clear and unambiguous covenant that applies to all residents without fear or favor.
Others have already commented. All I would say is that there are plenty of gray areas in whatever anyone writes, so leave yourself a loophole - "subject to the owner's final decision" or some such
I would be happy to break even on tier -- not looking for profit.
Land use -- residential, light commercial, educational.
OK, assuming no local taxation, you have to have an income of $295 a month. Reckon on about 50-60% occupancy, and do the math on prims allowed vs cost. Bear in mind you will have to factor in landscaping prims etc which is an overhead. Please avoid the 16 etc squares surrounded by narrow canals as plot edges - there's thousands of such estates like that.
Then I had the thought that I might be biting off more than I can chew -- and that I should try to pick the brains of residents with more knowledge and experience (probably everybody reading this).
Some things I am wondering about --
1. What is the condition of the land rental market in SL?
Hard. There are peaks and troughs of course - I'm experiencing a peak at the moment, but I know very well there'll be a downside at some point. So ensure you keep a tier reserve - I work on three month's worth
2. What rate of occupancy do estate owners expect?
Antthing over 60-70% is good; price accordingly but recognise that renters tend to drop out all the time
3. What is a reasonable rental rate per sq m?
I work on L$ per prim, but that's because of the way our sims are set up
4. Is is possible to be an estate owner, and not come in to SL every day?
Yes, but you will still spend a lot of time servicing your tenants' needs, marketing, landscaping etc. My partner and I spend a good 60-70% of opur time sorting out residents' issues
5. What can go wrong?
lol Just about everthing
6. Am I being stupid?
No.