Any tips on how to present this to the seller?

Lower competition markets may present better opportunities for initial success.Seek success stories: Reach out to fellow investors who have experience investing in similar markets.

I'm trying to be present at their next meeting and join the group.

The plumber came back saying the either the pump was burned/failed because of too many wipes being flushed down or when "an outside vendor" did snaking the pipe, it damaged the pump.He also mentions the "pit" where all the sewage from the fourplex comes to is too large, corroded and needs to be fixed:"using gravel to fill in the existing voids present aroundthe pit, then install a new pit with the extension lidneeded.

Presenting evidence of recent sales or lease agreements can help demonstrate the property's fair market value and justify a lower assessment.Engage a Property Tax Consultant: Consider hiring a property tax consultant or attorney specializing in property tax appeals.

While AirDNA presents a bright picture of possible earnings for short-term rentals (STRs) in San Francisco, it ignores the city's severe regulations.

And to @Bruce Lynn’s point, you apparently haven’t watched Mike Delprete’s  latest Inman keynote presentation!  

Having said that, I've only attended the AAPL's conferences, which are pretty much what you'd expect: presentations focused on the state of the market, education for lenders, and new best practices (with some tech thrown in).

.- Property Condition: I will sign paperwork if someone is ready BUT I make it clear that marketing will not commence until the property is walkable, cleaned/tidied up, and presentable. 

I help with guests' communication, responding to inquiries, writing reviews, coordinating guests' check-in and check-out, and arranging cleaners for turnovers at far much lower prices.I'm new on Biggerpockets but I have experience working as a virtual co-host and I presently help to manage 2 properties in Atlanta, and they are doing great.