Not to pour water on your surveying parade, but I know a lot of civil engineers who are underemployed since subdivision development work ground to a halt several years ago.

I belong to a condo association with similar financial problems, only it is main line sewer replacement throughout the complex instead of roof repair (although they had a huge special assessment for new roofing and siding several years before we purchased).  

This is who we used to do all the permit and engineering drawings for our last new construction project in Maryland:http://caddworks.net/Don't know if they have expertise in Charles County, but they were awesome to work with for our Howard County needs...they are in Frederick County...

I sourced a replacement (about $50.00) and installed it in 10 minutes.  

The Lease needs to be clear in its definition of what you are trying to accomplish here which is that the Tenant pays for all of the operating and maintenance expenses of the property.In addition be sure to include an understanding of who pays for major capital replacements (not just maintenance) such as replacement of the heating and air-conditioning units, water and sewer lines, electrical mains, roofs, glass, etc.

To sell in a rising market means that replacement properties can be scarcer and more expensive.  

I have a relatively large backyard and I have asked engineers if I have the ability to build a building in the backyard.  

I want to replace all of the carpeting with wood grain laminate and replace all of the appliances.

Well my rental income is in the stock market, and the market is down because Puerto Rico is bankrupt and there is war in the Ukraine, so to take those funds out, I have to sell at a loss.I need to replace the 25 year old roof on my building costing me $7000, but the market is down because an ISIS suicide bomber hit Turkey!!!!!

I have seen a few rookie investors hiring people that say they have experience and the next thing you know, they paid for a roof that now needs to be removed and replaced because it wasn't installed properly.