You will want to consult with a lawyer.In regards to your last two questions here's some background on what makes a contract valid and enforceable:Offer: A promise to do or not do something within a certain time period Acceptance: A clear and direct statement that all terms and responsibilities are accepted Consideration: A legal and adequate inducement given in exchange for the promise Capacity: The parties to the contract must have the legal capacity and competency to contract Awareness: A party must be aware of the contract Legality: The contract must be legal in the jurisdiction it will be operating in***Not legal advice*** Steps I would take: -Review contract in detail to understand each counterparties responsibilities (if you are not aware)- Email a copy of the lease to each of the tenants listed on the lease and reiterate lease expectations for termination notice, rent payment etc. - If the lease was signed via Docusign (other esign may have same ability) - you can go to the envelope, go to history and view the IP addresses for each action taken.

There are some legal considerations as well as practical considerations 1.  

Owner ended up settling with the tenant, but then we had to threaten to sue our own client to get them to pay our legal fees.- Owner must sign a Hold Harmless to indemnify us against any potential tenant lawsuits relating to the work their contractor is doing.--- Another lawsuit resulted from owner's contractor taking down basement handrail to get supplies down the steps, then they didn't put it back and tenant fell down the stairs.- We also negotiate a reasonable completion date, depending on the Scope Of Work (SOW). --- Who gets all the phone calls and wastes time calming a tenant down because the owner's contractor doesn't show up as scheduled after they took time off from work or a 3 day job takes 3 weeks?

TIAOne can walk away, or file legal actions.

Well anyone can write anything into a contract, but whether it is legal and enforceable is for the courts to decide...It is State law here that a contractor must call 811 or they are liable for the costs.

In case someone has been successful please share the methodology that is legally approved.thanks,Ananth

If you need financial help, ask under the "Finance, Tax, and Legal" forum.

Hiring a PM can save you time and headaches by handling tenants, maintenance, and legal stuff.

I think there is value in ADU as long as it is legally done and can be legally rented.On the sale side a benefit can always be an in law suite.

Whatever is closest to "Legal".