Lot in question - what to research for

[George P.]

A large lot in question.
Specs:
* About 4 acres
* Zoned Multifamily/Apartments
* Highly populated and desired area of the suburbs
* Off major road, next to large apartment complex, Townhomes community
* The road that takes to the lot is narrow (no through-traffic), and has a dead end.

Given that the lot can be purchased (really) cheap, but there is no assistance from the seller and no land research experience on my part, what do I need to do for DD? What do I need to research to make sure the lot is in fact buildable, has communications and such?

Essentially, I would like to buy and hold for appreciation (less likely), or look for a partner to develop.

Any advise is highly appreciated.
Thank you in advance!