I'm down in LA, so same problem as up where you are, so I've always bought out-of-state.

If 1 of your neighbors does not want to buy, you may have a problem as 1 would equate to 25% of the occupants.Now all of this is true and accurate from my experience having done this in the city - BUT, I never tried with less than 16 units.

For me it’s not a problem as I can price aggressively and still cash flow well.

A hairdresser would be a problem as they'll have customers.As to zoning, my dad had a mixed used property in a residential zone, a zone with properties before zoning laws went into effect, and commercial use is grandfathered for him.

Short term solution but will create a longer term problem.  As

If your lender is resistant and you are not able to get the draws in a timely manner then there is a problem. A

We are applying for the new California Rebates on Adding Electric vehicle Charging to our Garages this attracts higher-income tenants and solves the old Gas problem as it cost a tenant only $3 per day for a 300-mile charge lots of Tesla owners are happy to pay and extra $50 in rent to have the circuits already installed. a tenant with a large gas-guzzling truck that costs them $120 to fill up twice a week will not likely be able to afford the rent. plus with the new $8,000 Rebate on buying an Electric Vehicle, i only want upwardly mobile tenants. https://www.sce.com/evbusiness...

If not, I have a referral for a mortgage broker in FL who does both residential and commercial and could probably solve your problem as well. 

Cat urine smells can be a mold problem as well... so check closets, cabinets, etc.

In just 8 months the replacement dryer is no longer working properly (sounds like same problem as last time- the clothes aren’t drying completely).