Here is an example: How-toFor this kit to work you must have a functioning key to remove the cylinder.

The timeline was this:  The rear door had a reinforced jam, double-cylinder deadbolt, and locking knobset. 

They are made by Kwikset but you get one master key for every property but each properties tenants have different keys and when the tenants move out you only have to replace the cylinder instead of the entire lock.It will save you a lot of money over time and make your key chain a lot smaller.  

Their methods are the following: they jack up the house to get it level and use some type cement cylinder as support, in this case since it is pier and beam, below the supporting piers (or slab if it was concrete).The costs depend on how bad the ground is and how many cement cylinder they use. 

I was finishing up a make-ready and changing out the cylinders on the locks when I noticed that the old cylinders were missing the pins.

They also have an option for landlord deadbolts that the face turns for a new cylinder so you can use 1 key for multiple properties and while I don't have one yet may find myself buying them in the future.  

Nevertheless, the number of single-family homes currently under construction are at the highest levels since 2007, so there is a significant backlog that should keep construction activity running on all cylinders for the foreseeable future.

Our understanding is that it has a single-bottom cylinder and we expected to need to make some expensive repairs or simply replace it, but we weren't sure just how soon.

Someone moves out and we still have 3 cylinders running.

It’s like buying a 2 cylinder car… sure you can drive it down the road, but think if you had both cash flow AND Appreciation!