Some of them are in the neighbor’s side of the property line, but that house is also vacant and we can’t get through to the owner to share costs.The property manager we are working with got a ridiculous quote of $8000 to hire a company to do the clean-up (that’s approx. 10% of the purchase price of the property!!)

Since it could be a bunch of money, I plan to let that fellow do the cleanup and hauling.

He'll remove all vents and roof jacks, and replace with new.Second contractor will remove existing roofing membrane down to wood deck substrate. clean, apply1 layer #15 lb base underlayment, install Malarkey Highlands laminated 30 year asphalt fiberglass shingles, seal all roof projections, ground clean up and haul away for $4524.( http://www.malarkey-rfg.com/PDFFiles/MRP%20WebFliers/HighlanderFlierWeb.pdf) Highlander-CS™ ~ Malarkey's 30 Year Laminated ShingleBuilt with the strength of a highland castle, the Highlander protects your home while providing distinction, security and value that is prized by today's homeowner.

I hired a gardener to come in an trim all the trees, install sprinklers, and clean up the backyard (lots of debris from previous owner).

this may help how to clean up a meth labhttp://www.co.pueblo.co.us/pcchd/environmental/hazmat/hazmat-02.php

I expect to get the mobile back with the buyer owing me money and the mobile in need of major cleanup and repairs.  

I had a landlord that would come by the apartment and clean up the yard, organize the kid's bikes, check the laundry room etc around rent time.

Clean-up the landscaping, powerwash everything on the exterior.OPTIONAL but RecommendedPaint all walls & ceilings unless it already looks like it's new paint.Replace any carpet that isn't new  with decent laminate flooring.  

There are decent long-term tenants as long as you put your criteria up front and provide a clean up-to-date place in a safe quiet area.

You may or may not be able to charge for administration in coordinating all this, you can usually include clean up costs, moving and storage expenses.When the unit is empty, we have a bio-cleaning company here who cleans the area, there may be bio hazards and you may be required by law to have the unit or immediate death are professionally cleaned.