It’s likely the GC will subcontract the concrete work to a specialist while they focus on managing the permitting process and ensuring everything is done to code—especially if there are ADA requirements involved for the ramp.Let me know if you need help navigating the process or any tips for working with contractors.

Just make sure you do you research on Manufactured guide lines and requirements. 

We have seen maintenance costs skyrocket over the past 2-3 years and every case is different but here are some general guidelines for reputable (non-crackhead) investor level pricing in our area of operations:Furnace and A/C replacement with lineset for standard 3 bed 1 bath bungalow.

How about a concrete one?

Specifically from the Caged AC Unit into the attic (concrete slab so no crawl space).I was thinking of just building a tall vertical box to place this into.  

Maybe concrete single-family 1-4 units depending on the price point and cash flow.Also there is no real MLS in Puerto Rico you need to find an agent for each area you want to look at.

Are there any guidelines or best practices (ie: rewiring such a property would be more valuable than updating insulation).Is it something you need to ask the insurance company about to get, or is all this determined in the initial interview with the potential insurer?

Quote from @Paul Gupta: Hi, in California, For jobs requiring a license, there was CSLB (contractor state licensing board) which would give either a General Contractor license, or specialty licenses by trade (~60 specialties such as concrete, welding tile, ) https://www.cslb.ca.gov/about_us/library/licensing_classific...My Q: does Maryland and DC area have similar requirements? 

One key he found was mixing a welcoming atmosphere with firm guidelines.. it typically falls under standard tenant landlord laws for eviction.. so you’ll want to double-check local regulations.You mentioned Furnished Finders and Padslipt.com.. from what I’ve heard, those can be great if you’re targeting traveling professionals or short term visitors.

Oh the pink and beige house with the tall concrete fence?").