Check for local stone yards or fabricators too, sometimes they have remnant deals.Appliance-wise, focus on durable, easy-to-clean brands.

cleaning fee should be a pass through .

Stay squeaky clean with the IRS and local government agencies like code enforcement, sales tax, etc.

Cities are routinely requiring inspections of all sewer lines as part of the sale of all houses. 

For example, I have a connection in Dallas, TX who purchased multiple STRs in Miramar Beach, FL and claims to only be breaking even, which I found extremely difficult to believe because I also have a connection who owns a one bed, one bath condo in Destin, FL who made $78K in rental income, including the lodging tax and cleaning fees, and was still able to net approximately $35K in 2023.

For example, you find a space with good floors (LVP, tile, pretty good carpet - can be cleaned), but needs a paint job and some granite/new counters.

I know white appliances are cheaper, but I know they can be stained and pretty gross looking after some time (if they're not being taken care of and continuously cleaned). 

Take a picture for evidence. 72 hours later, go empty the place, clean it, and get it rented.

Do you charge for small cleaning items, like windows weren't cleaned, oven needed a quick cleaning and kitchen cabinets needed wiped out?  

Cleaning.