We expect construction to cost 400k.

If you are a first time BRRR investor I suggest you outsource to trusted professionals and temper your expectations of infinite returns.  

How much should I expect to invest in a triplex or quadplex?

@Corey BlakeRecommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.So, when investing in areas they don’t really know, investors should research the different property Class submarkets.

I would also check rents, do some mystery shopping and see if your expectation is correct.

I recently placed in a class a unit (almost $2k/ft value) because it is beach unit and expect higher water contact (normally class a gets real wood).Carpet in common areas in short run is cheap but long run will cost more than concrete stain or LVF.  

I expect economic activity to slow, rate cuts to deepen, housing activity to accelerate and USD purchasing power to continue weakening.  

The only way to tell is by a careful review of your current situation and your expectations of your future situation.

@Pete TarinIf you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy a Class D property in a Class A area, what type of tenant will you get?

However, you can expect to recover about 50-55% of your investment when selling the home.Improve curb appeal, clean up the exterior, add landscaping, and make minor improvements to enhance the property's first impression.