I need a granite counter top supplier & installer.

Of course, you can always spend more $$$ on upgraded features: New cabinets, granite/quartz, flooring, etc. 

I had my contractor basically fit the whole house, create an open concept for the whole first floor and put in a nice kitchen with granite countertops and new appliances.

I'm looking at adding granite countertops to one of my duplexes in OKC.

It has a one BR ADU with class B type construction (granite counters, nice cabinets, indoor laundry, nice flooring). 

My last multi sale I put in the best appliances and granite in the worst neighborhood and sold it the highest ever in neighborhood within 1 hr on mls.

If all the rentals have laminate, don't do hardwood floors and granite counters.

She just replaced the air conditioner, and water heater and has done nice upgrades through the house-epoxy garage floor, granite countertops, crown molding.

If your comps have granite/quartz kitchen counters and ceramic tile floors, don’t install Formica countertops and linoleum sheet flooring expecting to get the same number.

I can fill units easily and retain tenants at that rate but any higher than that I'd be competing directly with much newer and nicer buildings that have gyms, pools, granite, etc. so you'll have a hard time fetching any more than $1,200/side on an older duplex IMO.