Yea, i feel mildly bad.

I am very patient and mild mannered, but they simply PISSED ME OFF.

On the topic of cabinets.... pro tip:  If it's going to be a rental, take a vinyl flooring remnant and line the base cab under the sink to protect the case from the inevitable drip or leaking detergent container.Hope this helps.

Unless you're consistently finding product packaging in the refuse you can use to gauge consumer preferences, it might be only a marginal idea.Maybe consider posting a survey in the laundry room asking for the tenants' feedback: "Would you find a laundry detergent vending machine helpful?" 

In my estimates I use a much larger cap expense forecast than $150/month but So Cal is more expensive for repairs than many other markets (but some life spans are higher in So Cal due to mild climate reducing cap expense - cap expense is a function of cost and life span) but I would be surprised if there is any location where cap expenses can be much lower than $150/unit per month.

@Rebecca StyerWe use ductless split heat pumps - usually to displace a reliance on electric baseboard heater - where the layout of the property is conducive .... and our climate makes Pennsylvania look relatively mild.

In another thread in a different forum here on BP, the original poster had a dilemma of being three years behind in rent/utility payments.A lot of the responses were irked (to put it mildly) at his gall at wanting a *deal* from his landlord/roommate.A simple glance at the OP's location Berkeley, CA indicates his mentality.

The bleach and some detergents can break down the shingles even further.

In fact, since you are in a mild climate a d the properties are small, you might be an ideal candidate for mini split HVAC systems.  

v=_fCLVapcR2AHigh Point:  https://www.housebeautiful.com/design-inspiration/a26945378/high-point-north-carolina-american-made-furniture/@Scott Mac: In this land of "Nascar and furniture" we have the most diverse forest in the entire continent (western NC), some of the most pristine coastline, several top tier universities, a metro area (Charlotte) of 2.7 million people and rapidly growing, two large military bases and towns, the #1 most visited national park (the Blue Ridge Parkway), some of the most coveted hiking and mountain biking trails and parks, the largest home in the US (The Biltmore Estate), towns like Asheville that consistently make top-10 lists for lifestyle and relocation, coastal towns like Wilmington that are so desirable that they have nearly no land left to build upon, fantastic weather that includes all 4 seasons but only mildly so, etc.