In general - Unless you know the property has only skin-deep stuff you can fix FOR SURE - I'd hire an inspector to look for stuff like foundation issues, moisture invasion, everything is to code, major mechanical stuff, life on expensive stuff like HVAC/roofs.MHs a little easier though, but don't know the level of rehab you want to do.

Also if you have a guy that knows, look for edges like joints and chimneys for potential for moisture invasion6) Crawl space and moisture and barriers.  

The main thing with any kind of pavement treatment is to keep surface moisture from the soil beneath.If the paving is in good shape (i.e. no alligatoring or potholes) and looks like it's graded OK (no standing water after heavy rain), a seal coat can add life to the property.   

Plan for replacements3) Look at major structures, your biggest issue is moisture invasion. 

They make moisture testers if you need one.  

My main concern, possibly because of my lack of experience, is this moisture in the basement.

(As an aside, I would also order a mold/moisture check to make sure there really isn't a problem.)Two caveats, though:I'm not an attorney, nor am I giving you legal advice; This is what I'd do.We rent in the great State of Georgia, where the laws are decidedly landlord-friendly.

Well, if I was seller, I wouldn't allow an inspection without an accepted offer.However, you should see it in person to look at things that are expenses like:1) Siding and paint2) Roofs3) Windows4) Paving and grading5) Any evidence of moisture invasion like warped boards.6) Is it sited well and have curb appeal?

If they are laid on a cement slab, some moisture might be present under the slab and being pushed up through the cement and seams.

@Heather Schmidtknecht I know that moisture in basements can be a common problem in a few states but it is still a big deal.