In the near west and north areas of the metro area I am finding very few professionals in the siding and roofing trades that will service investors.

Like the big banks adopting a futures market for BitCoin.

@Adam SkayI would sell the sfr and 1031 trade into a building. 30–100 doorsI made that transition this year. 1 door no more.

Like many others have said, labor is in demand right now so I spent a good amount of time getting 3-5 estimates from each trade.

I’m thinking of going forward with a single-family house buy & hold strategy and do trade-ups for multi-units property in the future.

Bp, REIAs, agents that work with investors.Also just be open eyed that a portfolio of properties typically trades at a discount than if they were sold individually.

Currently we are helping land lease communities with their compliance burdens related to Fair Housing and ADA.I was appointed by the Governor of Illinois to set up and run the Illinois Manufactured Housing Quality Assurance Board, I was selected as the Manufactured Housing Industry Person of the Year(2013), my consulting company was selected as Service Supplier of the Year in 2011 by MHI (our national trade association), I have served three times on the Board of Directors of the Illinois Manufactured Housing Association and also served as Chairman in 2014, and have been the featured speaker over 200 times at industry events.

@Rigo V.If you're going with a general contractor, they will coordinate all of the different trades that need to come in.If you're doing the work yourself and hiring contractors where needed, you'll need to understand the flow of the work needing to be done.Contractors have their own forms.

Myself I have a building  background and possess journey level skill in almost all trades except maybe doing concrete work and I am also an architectural designer so I perfer properties that can be increased in value through forced appreciation and look for properties where the zoning, set back, and other requirements allow for adding square footage to a building but others perfer invest in turnkey properties already fully occupied whereas I like working with empty buildings. 

paying off a house is simply trading liquidity for non-liquidity. you'll save yourself the compounding interest but that's at a very low rate.