@Austin M Kauth, these kinds of deals tend to be messy and are often unlikely to conclude with a completed sale.

During the time we lived there we made some minor upgrades/repairs- renovated upstairs bathroom, replaced carpet on 1st floor with LVP flooring, added artificial turf to the backyard, replaced pool pump, and replaced the HVAC system.

Lastly, there were a few small (but very visible) stains around the carpet.

I would feel safe using the security deposit on smoke mitigation on turnover which might include kill/paint purchase of ozone machine steam cleaning or replacing carpet etc. remember to account for useful life if replacing.

My house was built in 2005 - I don't have new white cabinets (like almost every upgraded kitchen now) or granite/quartz countertops but the cabinets are an upgrade from 2005, bathrooms are an upgrade from 2005 base model, no LVP floors, has carpet and linoleum (that looks like tile from a distance).

Paint the outside, painted the units, replaced carpeting, new fixtures...

If you have carpet consider a cleaning clause if you don't have one. 

Even in the best scenario you would have spent $1,500-$2,000 to update the smoke detectors and C02 testers, cleaned the carpet, re-glaze the bathtub, update any leaks and light paint and wall repairs.  

Get you some Kilz and strip out all the carpets.

Looking at my first property and there is a severely intense odor in the basement (concrete) and some slight orders on the other levels of the house as well (hardwood floors and carpet).