Every state has a department that is responsible for issuing and managing contractors licenses.

We are finding from the department of building whether C of O is still there and needs to be closed. 

Since this is an investment property Department of Consumer Affairs stated they cannot help me.. 

@Tom ONeil Tom you would be well advised to select a firm that has first hand experience with the planning department that you’ll be working with to secure permits and entitlements.Having the experience is a core requirement.

@Andy S. contact the department that runs Section 8 where your rental is located and ask some questions.

My job has become stressful to me as I'm the only AR Bookkeeper in my department and I feel like I'm growing more bitterness towards it than knowledge. 

I cannot answer your last question, but assume there is no way to increase the pressure rating of the glass.As for how do you find out what kinds of windows for various sized house in specific markets: talk with building department or read the building code before you begin ordering materials.  

And also the rental income from your departing property, if needed to qualify.For example, if you were buying FHA, and you need to use rental income from your departing property to qualify, getting a heloc over 75% LTV would shoot you in the foot because you will need an appraisal to prove you have 25% equity in your departing property in order to use rental income to offset the payment. 

Check with economic development department for what the plans are for the immediate and surrounding areas.

I don't have your exact numbers because I don't know the following expenses.Trash removalWaterElectric for the house meterSewer Use FeesBusiness LicensesAnnual fire department feesAnnual County Housing Inspection FeesProperty management costs.Property insurance plus annual increaseWith today's high prices I don't think properties will appreciate more than 2% annually, or may go down.I don't know exactly what property taxes are in San Francisco, but in Los Angeles the property taxes are 1.25% of the purchase price plus property taxes increase by 1% every year.