I've walked their properties in-person, and their build quality is good.

Quote from @Cathy Li: It's a white label software built on go high level.

@Ezra Avery you might want to read below to understand Classes of Property/Tenants.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.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.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

@Mattin Hosh first, most cities in Metro Detroit have some type of rental property inspection every 2-3 years.It's not really a big deal 99% of the time - especially for owners who are NOT slumlords:)Also, a quick Google search will show that several states/cities are passing/considering similar legislation.One of the biggest mistakes we see newer investors making is NOT properly understanding Neighborhood/Property/Tenant Classes and naively assuming that any rental they buy will deliver Class A results.Read our copy & paste thoughts below and DM us if you'd like to dicuss more about the Detroit market:)-------------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.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.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

Investors aren’t avoiding the work, they’re just focusing on higher returns and leveraging their experience.That said, even the high-level investors we work with still BRRRR single-family homes, they’ve just added larger deals into the mix.

Coming from an area where rents are much lower (a 2-bed, 1-bath, 1,500 sqft rental averages $1,270/month), I was shocked by the high rental prices in Danbury.

Some of the materials we choose and asked him to pick up (such as flooring) he replaced with low quality materials, I assume to keep more of our money for himself. 

@Sakib KhanRecommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.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.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

Bonus Tip: If this quadruplex is out of state, I’d highly recommend building a reliable local team (cleaners, handymen, etc.) and maybe consider hiring a co-host or VA to help with day-to-day tasks, especially if you scale up. 

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.