That would also allow access to mechanicals in case of a maintenance issue.

I reserve the right to be wrong, but I think if you push that piece in, it will release the mechanism.

I'm not so familiar what the steps are to do that, or the detailed mechanics.   

New mechanicals, roof is 3yrs old.

@Jacob Breazile - Make sure to account for the following expenses:1) Mortgage2) Mortgage insurance (PMI or MIP) or FHA Risk base3) Property Taxes4) City Taxes5) HOA (Home Owner’s Association) Dues and Fees and Assessments6) Insurance Property Hazard InsuranceFlood InsuranceEarthquake InsuranceUmbrella Insurance7) Vacancy Rate (usually 8% - the equivalent to one month a year, or 5-6% if multifamily and/or if experienced, if not use 8%)8) Utilities (you’ll have these if your tenant is not covering them and/or during vacancy) Water § Sewer § GarbageElectricityNatural GasPropane9) General Maintenance (usually 5%) Upkeep § LandscapingSnow removalRepairsNew Appliances10) Capital Expenditures (usually 5%, higher is the property is old and obsolete, less if fully rehabbed and all mechanicals and roof are new)11) Property Management (8%, even if you self manage, your time still has value and there might be a time when you'll want to be completely hands off or you'll not be able to do it, vacation, retirement, etc.)

Also I'm not looking for electronic or wifi connected, just a mechanical unit. 

My opinion is ultimately the PM company should be held liable to make sure this vendor gets paid.The PM agreement states: (21) hire contractors to repair, maintain, redecorate, or alter the Property provided that Broker does not expend more than $ for any single repair, maintenance item, redecoration, or alteration without Owner’s consent; Leasing & Management Agreement concerning: (TAR-2201) 6-1-10 Initialed for Identification by: Broker/Associate and Owner , Page 3 of 11 (22) hire contractors to make emergency repairs to the Property without regard to the expense limitation in Paragraph 4A(21) that Broker determines are necessary to protect the Property or the health or safety of an ordinary tenant;3) Should/Could the vendor file a mechanics lien at this point?

The only things that don't show are the back-due real estate taxes (step #2 above), back due utilities, and any possible lien that hasn't been filed but there is a statute of limitations on those (think mechanics lien).I hope this helps. 

The purchase is said to be made subject to the underlying financing, hence the name.You can search for forum and blog posts on "subject-to" (or "subject to" or "sub2") using the BiggerPockets search icon (the "magnifying glass") at the top right of every page.For the record, the exact mechanics of Sub2 vary from state to state.

I okayed this appointment to avoid any sort of mechanic’s lien or legal action.The property is located in North Carolina.Thank you in advance.