It needs to be mechanical because you don’t want it to stop functioning from a dead battery and you want it to be robust because you don’t want someone beating or picking out the rubber numbers with a screw driver and mess up your lockI would recommend looking at Simplex locks, DOD uses them on a lot of government buildings for these same reasons and we also use them for our multi family properties for common access … a bit pricey but they will take a beating, worth the look.

Anything much higher than 50% is generally a red flag to me, though.Your best defense mechanisms are 1) Pick a contractor who is reputable, licensed, and comes with good references.

The device must feature a self-release mechanism located at least 54 inches above the floor.6.

I see your point---you might let your mechanic check under the hood of your Porshe, but would understandable shy away from the notion of letting him do open heart surgery on you.

The property I obtained is pretty tired  (thats gonna keep me busy for a while)  but all tenants therein seem to be decent people and have various decent,  blue collar jobs like EMT,  Nurse, Mechanic,  Educator,  etc.   

They also have preferred relationships with lenders.Unlike the firms more commonly referred to as "turnkey" operators, however, Roofstock does not renovate properties before sale, nor do they run in-house property management.The upsides seem to be that:Their marketplace lets you search, filter, and analyze many properties across the Roofstock markets more efficiently than any single turnkey operator or marketer doesTheir properties do not carry the typical turnkey markups, which may leave a bit more meat on the bone (these tend to be rental properties owned by institutional investors)The provide much more complete and useful data in their proformas, with the ability to easily tweak assumptionsThe downsides seem to be that:Properties are provided as-is and likely haven't had a complete renovation, so repairs and CapEx may be higher with their properties (though they do disclose details and expected useful life on big ticket items like the roof and key mechanicals)You lose the "one neck to choke" benefit of turnkeys, though they do assign advisors who are available to assist you throughout the process of closing on the homeIf you are familiar with Homeunion, Investability, or Mashvisor, they are all worth a look for comparison. 

All kidding aside, you don't ask your dentist for mechanical advice. 

The process of building a model yourself also is a good exercise in understanding what the mechanics of a deal are and allows you to customize your own process.Once you understand the process then using a more advanced model makes a lot of sense.

@Michael Hayworth And I have heard that permitting is not a big deal in Texas, of course, I am not from there nor I have ever done any business there, from what I've heard, they only want mechanical and electrical done correctly, never heard of any asphalt shingle roof repair needing permits, nor interior walls, or hanging cabinets, alas, CA does, I mean, what's the worse that could happen on an improperly installed roof?

I often times see higher repair requests in these areas because tenants here expect a certain level of mechanical and cosmetic readiness.