There are companies such as Cover that offers a full service ADU deliverable from design through construction completion.

Happy to be of service.

But her company, like so many, has whittled down their actual service to the point that they aren't really doing useful work, just enriching the CEO.

Quote from @Jeffrey Hill: There are a couple of challenges with financing the difference. 1) The current servicer has to approve it. 2) Finding a lender to do a 2nd mortgage at 100% CLTV is almost impossible.

New Roof, New Windows, Paint interior/Exterior, New Appliances, New Garage Door, New Fascia, New Fixtures (Bathroom and Ceiling fans), Electric Service Upgrade, 1204 Sqft, built 1960.

From sourcing turnkey rental properties to finding long-term residents, and comprehensive property management, our expert team offers a full-service solution for a truly stress-free investing experience.

Also go through a servicing company for payments to the seller, escrow can probably help you out with a recommendation for that. 

However, there is no way to do so without risk.The Internal Revenue Services issues three (3) Private Letter Rulings (PLRs) that allowed the taxpayers to do just this.

I'm a full time agent and have clients that request cleaning services oftenSent you a message 

You'd think 60 years would have cleansed all that but it hasn't.You might target social service and local agencies since this property was in the past a half way house or similar and was only converted to market housing to make the sale to you.