I'm not looking to get rich or replace a W2, but I am looking to build a portfolio of properties that will eventually add to my income streams in retirement.

Investors purchase income streams, not real estate.What makes an investor agent?

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with zero or negative relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560, little to no good tradelines, lots of collections & chargeoffs, recent evictions.

I've recently had the roof replaced and fully updated the common areas.Here's a breakdown of the situation: The units are currently marketed as furnished rentals (cashflow well), and based on the current income of the 4 units I own, I anticipate that all 6 units combined will gross $182,400 annually.

Can I ask what your occupancy % is currently and where it has to be for you to break even or generate net income?   

(Someone to receive notices on your behalf)Residential income properties need a Transaction Privilege license in most locations (Rental Tax)Property Management is a specialty in the industry and it's very possible your sister has her license with a broker that doesn't allow her to do property management?

I learned that there are great opportunities to purchase low maintenance, fully remodeled homes in places where there are high quality management teams in place that can produce nearly passive income.

Kinda fun tbh.I ended up having 2 people just from talking and lifestlye (pets, kids, jobs), I picked one as they have a more consistent income and did a vetting on credit/background for around $40.Within 3 days, the vacancy was filled.RenovationNo property is perfect.

Typical rates are 8-12% of income either monthly or yearly depending on manager.

Nothing wrong with renting out rooms which is called (Boarder income).