I would protect myself and cut my losses so I was not looking over my shoulder or getting high blood pressure every time I heard a knock on the door (hoping it is not the FBI showing up to ask you some questions). 

For example I am near old town alexandria and the businesses are 200 year old row homes and there is no place to put ramps to get in establishments and door openings are not wide enough, but that is because they also could never comply. 

Networking, local meetups, door knocking, mailers, wholesalers, online forums specific to your area of interest.  

Other risks, the contractor walking off the job, a storm hitting and delaying the project for weeks, someone breaking into the home and stealing stuff (which happened just the other day to a client of mine), a squatter, or drunk driver driving into the house (happened a lot at my old job as a firefighter lol).

It took a bit to wrap my head around there being luxury homes intermingled with 5th wheels next door, etc., but their lots were like parks.

Something with more doors and more potential.

Install cameras and exterior lighting on timers, place no trespassing signs, and place items that indicate occupancy - like a BIG dog bowl near the front door, shoes, etc. 

Hi Yooni,I’ve been self-managing my 12 Detroit doors for the last 2.5 years, and while I’ve made it work, it’s been far from easy.

Fast forward to today, I have over 275 doors.

Also putting a business card and flyer on the door could work.