Bought house in 2020, so instant cash flow given the low rate and price.

Almost an impossible way to “get started” as you’re going to need full purchase price in cash on hand or a HML willing to instantly fund you. 

We bought a home built in 1900, insurance water damage coverage is 10% of the dwelling limit. 

If the property is solely tenant occupied you will be looking for a Dwelling/Fire Policy (may be called a Landlord policy or similar name) or a commercial policy such as a Business Qwners or Package policy.Most homeowners or dwelling/fire policies include:1.

I've found some construction companies that specialize in ADU (Additional Dwelling Units) conversions/construction in SanFrancisco and San Diego but not as many in LA. 

You cannot have a traditional homeowners policy and a landlord policy on the same dwelling.

Solar panels may qualify for the 30% federal energy credit, and advertising expenses, like adding your company’s logo, are deductible.However, Section 280A restricts deductions for any dwelling unit used as a residence for more than 14 days annually, even if partially used for business.

They pay for themselves almost instantly when you use a dynamic pricing tool.

which is allowing homeowners to build an Accessory Dwelling Unit (ADU) on their property.

So I get 15-20 leads for each booking on Furnished Finder, which is a PITA because of all the manual follow-up and manual paperwork required vs AirBnB and others with instant booking and streamlined tenant approvals/payments.