When electricity passes through the titanium it acts as a catalyst that converts the dissolved salt (aka sodium chloride) into sodium and chlorine.  

, status of major building components (roof, HVAC, structural, electrical, plumbing), accounts receivable aging (are all tenants paying or is the $20,500 schedule rent?)

Utilities are OFTEN overlooked so reach out to power, telecom, gas (or go all electric), water, and sewer to make sure you understand what it would take to get separately metered services from the primary house.

Permits are basically only pulled for electrical and plumbing of if they get caught.. its the only way to make the rental houses cash flow in many of those markets.On top of that licened contractors many times simply wont work on those type of properties there is no money in it for them..

2) Electrical: Because we have no heat, we've been using two space heaters.

Without electric you can not heat the unit.

The company managing our property as a vacation rental was unable to get the power turned on in our condo for months because we had to get the meter switched into our name with the electric company (which is much more difficult to do in CR than in the United States).

The vast majority of electric dryers run on 220v.

My husband did 90% of the work himself, only using contractors for large electrical, plumbing, and construction projects.

@Diana Teng there are a LOT of potential pitfalls:(So, it's vitaly important to not just find someone that you think you can trust because they tell you what you want to hear, but you find someone that their processes seem a good fit for what you want.EXAMPLE: we do BRRR Turnkeys for clients and take numerous vides we share with them - initial, worst state of any demo, when HVAC, plumbing, electrical update BEFORE walled in, before any major payouts and of course a final walk-thru video.One thing that's accurate from all the HGTV renovation/flip shows is that you should expect and plan for surprises!