The low income versus high cost of living is referred to locally as the sunshine tax. https://www.businessinsider.com/most-expensive-places-to-liv...https://www.census.gov/quickfacts/fact/table/sandiegocitycal...It is my view that the incomes cannot sustain the high cost of housing in San Diego but it has seemed this way to me for four decades and yet the RE prices keep increasing.  

$15k co-host, $6k insurance, $34.8k P&i (7%, 30 year DSCR), $5.5 prop tax, $12.7k utilities (mostly propane & elec), $7k maintenance/cap ex (3100’ with class A finishes), cleaning $24k (8 turns/month), then the small items. 

If you need financial help, ask under the "Finance, Tax, and Legal" forum.

Some numbers below for reference: I currently am taking home about 140,000 pre-tax.

The biggest advantage of using someone local to where you're buying is that they will understand taxes, insurance, and similar items very well when it comes to DTI/DSCR calculations and payment quotes, and they will likely have a local network of service providers for ancillary services (survey, inspections, etc).

In your scenario, selling the relinquished property for $450K after completing a reverse 1031 exchange will allow those proceeds to repay the intermediary without triggering capital gains taxes, provided all exchange requirements are met.

You will truly be raising the clock, as each day will cost you very significant money.  12% interest on $250k is $2500/mo, or about $80 per day in interest, not including your other carrying costs (utilities, property taxes, insurance, HOA). 

After he teamed up with a local intermediary in the Bay Area.. from what I read in the Wall Street Journal, Lockton has been helping investors streamline these moves.. he ended up freeing enough capital to invest in a mixed-use building in San Antonio that we’d been eyeing for a while.I’m no attorney or CPA, so I’m not giving legal or tax advice here, but there’s definitely something to be said for repositioning your insurance to fit your broader investment goals.

I know how much my property taxes will be, but what other expenses are there, and approximate cost? 

Main question in other countries is ownership and taxes.