rehabing for BRRR is different than rehabing a straight rental property. its a lot more like rehabing for a fix and flip. It takes experience (im still learning myself) to learn which areas to focus on for the most cost efficient rehab. My thought is, almost all SFR appraisers are used to looking at a house through the eyes of residential buyers. So the same thing that a buyer in that area would want to see the appraiser is going to like.
1. learn your comps. If you ARV is 290K, look at 290K homes nearby that are similar and sold recently. This makes the job easy for the appraiser and you. if these homes have stainless appliances, granite counters, etc, you need to do that as well to get that ARV.
2. Focus on Kitchens and baths: just like selling a home, this are the big ticket areas, so spend your extra budget her. I use new stainless appliances and granite countertops even though it will be a rental. i have had several appraisers positively comment on that, and i have found i attract a higher end tenant for the market. Also, granite is more durable (tenant proof) than Formica.
3. make sure the "cosmetic rehab" is complete. if plumbing and lighting fixtures look old or out of date, replace them. this is a relatively small expense for a 290K house. You dont have to go expensive here, just something that is new and in style. i go with low end oil rubbed bronze fixtures. a faucet runs $30-50 but makes a big difference in a bathroom.
4. Flooring - i use Luxury Vinyl Plank flooring throughout the entire house, bathrooms and closets included. its durable, tenant resistant, in style and looks great. and its affordable compared to other hard surface flooring options.
5. spruce up the landscape - dont spend much money here - your tenants will most likely not keep up an expensive landscape. your goal is to get curb appeal for the appraiser and initial tenants. Trimming bushes, mowing grass, and having pinestraw and mulch can go a long way to making a property look nice from the outside.
6. pressure wash - speaking of curb appeal, any cheap way to make sure a house looks good is to wash it. a pressure washing runs about $200, but can make a property look new.
I definitely spend more on my BRRRs than other landlords do in the same area, but I do spend less than I would if I were flipping the same property.