Supply vs demand.Tenants do not hesitate to fight back demand a rent reduction.

Not demand a “killer deal”.In summary and to truly answer your question (i know you just asked about costs but I digress. also these thoights might be useful for others starting out).

@Brett Dawson market strategy matches current market demand as well as demand for the foreseeable future based on population growth factors including economic development and redevelopment in the area.

@Colleen Prescott with all due respect and whatever to the author of that article, I think they should go back to whatever school they attended and demand a refund.  

Should an unauthorized occupant refuse to be bound by this lease, or refuse to leave on our demand, as the case may be, you agree to pay, as additional monthly rent, the sum of $25.00 for each day the unauthorized occupant remains on the Premises.It won't help you this time, but I always try to make each mistake only once.

Because the rental rates for a unit where the tenant pays all utilities will demand a lower rent than a unit where the owner pays all utilities.Base you rent on the $/sqft of these like-properties.

Do a research to see if MH's are in demand as rentals in your area, talk to local MHP investors and take it from there.

Do you you think I would have a tougher time selling this house or would it demand a lower price because of this unusual addition...

@Jake Stuttgen rent is typical, but definitely more than the place would normally demand as is.

It is intended to prevent price gouging anywhere in the state where there is increased consumer demand as a result of the declared emergency.“ As for what is the worst case scenario that could happen, I suppose being criminally charged like the landlord in this story: Novato landlord charged with price gouging as prosecutors scour for cases after firesIt’s too bad the Housing Authority didn’t catch it before they approved your request for the rent increase.