Specifically, I'm looking at Joshua Tree and Borrego Springs.Does someone here have experience in these two markets? 

My understanding as to the reason talking to local inspectors was the updated building codes made them uneconomical; specifically requiring that buildings with more than 2 units have to have fire sprinklers.

It is a situation where no lease exists, and you must comply with state and local law as specific to your locationIn my case I would give them a 30-day notice of rent increase and to sign a new lease.

When people mention "investor-friendly" real estate agents, they're referring to agents who have a deep understanding of the real estate invesment market and the specific needs of investors.

That way you get specific advise from fellow investors in your area.

Key determinants include the percentage of owner-occupied units, contribution percentage for the HOA budget towards reserves, and a clean record without litigation, delinquencies, or major issues.

Not too sure what specifics you are looking for but happy to help anyway.

Are there specific sites or processes to get into the list for  Fort Worth and McKinney to to list your property as a rental for section 8 tenants?

According to the Fair Housing Act and the Americans with Disabilities Act:Even if a landlord has a no pet policy in place, the law does not consider service animals as pets and therefore the service animal is exempt from such a restriction.Service animals are allowed anywhere a person would go, including food areas that would normally restrict an animal’s presence.Landlords cannot charge a pet deposit or pet fee for service animals, however the tenant is liable for any damage that the service animal may cause.Landlords can require written verification from the tenant’s health care provider that they are disabled but cannot ask for any specifics about the disability.Landlords can require written verification from the tenant’s health care provider that the service animal is needed.Landlords can request copies of the animal’s health records to prove the animal is in good health, parasite-free and immunized/vaccinated.Landlords can write warnings or even evict a tenant with a service animal if the animal is disturbing others, posing a threat to others or causing considerable damage to the property.In other words, you can ask for appropriate paperwork concerning the tenant’s need for the service animal and to verify the animal’s health. 

Can't find you specifically in our database though, do you have a partner that this property would be under?