Rents are much lower than market and we plan to raise them eventually by upgrading the units a bit.

After some upgrades and appreciation, it's probably $730k now.

In KC, the best bang for you buck are kitchen upgrades, adding a bathroom if possible, adding a bedroom if less than 3 bedroom house, and upgrading paint and flooring.

Are you using skip-tracing or something similar to upgrade the chances you can call the owner?

A house hack is meant to live in and upgrade as you go.

We under the concern over air quality as it affects us all, however we have no plans to upgrade the windows."

@Nicholas LambertI would speak to some electricians and get an idea of what it will cost to upgrade.

Unit 2  and 3's heating units either need to be fixed or upgraded. 

Understand not much  can be done about the weather , but contractor is recommending an upgraded shingle : TruDefinition™ Duration STORM™ ImpactResistant Shingles with WeatherGuard®  Technology To use for this replacement -  Has anyone used this shingle and offer any recommendations on whether it is worth it or not , and what other measures are you taking against hail storm damage 

The property themselves will be upgraded in 3 phases and will command even more monthly income plus huge equity build.