Each year we have them cleaned throughout because they do collect dust underneath causing poor performance and electric costs.

Raw land usually won't have much of an inspection period, there isn't anything to inspect unless you want an analysis of soils or other aspects, not customary with residential type lots or small parcels. 

You do not have to share your Phase I findings with the seller, so if it winds up being relatively free of potential soil and ground water pollution or contamination, you may be able to get a below market deal. 

Loopnet, BP's marketplace, Linkedin, fb, banks, r.e. agents... guess it also depends on if you want hotels(flagged or not), office bldgs, mixed-used commercial and if it matters if its off-market, within U.S. soil or overseas.

If the seller has an existing site survey and soils report, these should help give you more info on the dirt (and save you some $ if you were to subdivide and/or develop further).Let's connect offline if you think it'll help--happy to chat anytime.

If there is mold underneath, the wood underneath may need to have some spots replaced.

It is a very slow leak only when the soil is severely saturated with water. 

If it doesn't come through, I'll edit this post (or post underneath) with all the data.Thank you

It's foundation, I've done 5k on one and 30k on another, exact same issue, it's all about code and soil.

No on that side is a tiny hill so it looks like the water underneath washed the dirt out which is causing it to sink a little.