About ShadowKey
You can manage a rental yourself and still need help when the faucet leaks, the renter is only free on Thursday, and three contractors have yet to answer. ShadowKey takes on the coordination around those moments. You stay informed and decide when the cost needs your approval.
Our initial focus is the Philadelphia and Seattle area owners with roughly one to ten rental properties.
Explore selective property management and how landlords can choose which tasks to delegate.
How we work
ShadowKey uses AI-assisted workflows to gather information and keep communication moving. An owner sets approval limits, can prioritize trusted vendors and sees when a decision is needed. Renters and vendors can communicate by text; they do not need a separate app to participate.
The owner pays the vendor directly. ShadowKey charges for its subscription plans and does not add a markup to the vendor's repair invoice.
We do not promise that every vendor will respond or that every repair can be priced before an inspection. We show the available information, keep following up and bring the owner in when a choice needs to be made.
Who it is for
ShadowKey is built for a landlord managing a few rentals who wants help with maintenance coordination while keeping the final say on important costs. It can also help an owner who already has preferred contractors but needs someone to handle the back-and-forth.
The problem we focus on
A repair is rarely just one phone call. A renter reports a problem. Someone needs the details, availability and photos. Vendors need to be contacted and followed up with. A quote or inspection fee needs a decision. Then the appointment and invoice need to reach the right people.
ShadowKey brings those steps into one visible work order. Our focus is the practical work between “something broke” and “the repair is done.”
Meet the Founder
Founder
Cheng Li
I became an accidental landlord in 2015 when I moved to Texas but didn't want to sell my home in California. What started as a practical decision turned into an interesting opportunity: my California rental income was actually higher than my rent in Texas. A little geographic arbitrage!
I had to learn the ropes, but luckily, I grew up in a family of real estate agents, so I had plenty of support along the way.
As my rental properties grew, I discovered the part of being a landlord I enjoyed the least: calling vendors, chasing quotes, and coordinating repairs. As an introvert, I'd sometimes have to mentally prepare myself before making a call—and, admittedly, feel a little relieved when nobody picked up.
That's why I started ShadowKey. I wanted to take the most frustrating part of managing rental properties off small landlords' plates without taking away their control.
After all, if full-service property management could eat up 10-15% of your rental cash flow, shouldn't there be a simpler option when all you really need is help with maintenance?
That's what ShadowKey is here for.
