Between the two, they pick up most everything.

Since they were single families (condo and detached single family home), they will sell for prices too high to be picked back up by an investor, thereby getting sold to an owner occupant Buyer, thereby restricting supply, thereby increasing demand for my investment properties, thereby increasing the rental rates and my cash flow. 7 - Thank you for the shout out @James Carlson.

Need to pick your expert brains.

Pick a market where VERY few people live and a TON of people visit.

I'm a digital marketer and investor that has helped several agents dominate their markets and then grow to have their own brokerage.A few things I noticed between the successful and unsuccessful brokers are:The successful brokers found a niche whether by location, housing type, or by client type (i.e. they only work with investors like those on BP; really the best niche because investors don't usually need hand holding and we don't care what a place looks like.)They work with agents that also pick a niche.

The next step will be to pick a market that you want to invest in and do some market research in that area.

Also with a duplex, you may need to hire someone for lawn maintenance, snow removal and garbage pick up.

Pick your battles : ) 

I picked up a duplex that's currently occupied Sept 1st and I'm currently closing on a vacant unit.

Especially if I am OOS and trying to pick a market to invest in.