We have an uncooperative tenant in our property who is  resisting re-signing an expired lease, moving out, or paying increased rent.

Figure 15k-20K You will want your own inspection during due diligence thats another 1200 or so.Does the 25K you put in the repair costs really yield 200K in immediate value increase?

We are see steady rental increase in both the Sfh and small multi space. 

He quoted me:Moving bathroom walls/adding dry wall: $3KReplacing door with window: $1KAdding island w/ stove and oven: $4.5KRelocating sink: $3.5KAdding dishwasher: $600Replacing door w/ Wall and W/D hookups: $3.5KAdding privacy fence: $1.5KAdding central A/C: $6KFloors: $8KI haven't gotten a second opinion yet from another contractor.

Some leases have built into them provisions whereby the landlord can increase rent in the event property taxes or other services to the property are increased. 

If you are at market you need to do a rent increase annually to keep up with the annual cost of living index/increased expenses.

Also, you did not factor your expenses will increase at all so that’s why your COC% go so much higher in future years.

With "Save Our Homes" caps on tax increases, the market is far out pacing those.

Instead get their phone numbers and call them and text them and increase your response rate to well above 50%.

May be it depends how the properties are located from the privacy and convenience aspect for two different owners?