The conditions, recommendations, and suggestions contained herein are the result of a visual inspection, without removing surface materials or performing structural calculations, as of this date.This house is a one story residence, approximately 70 years old, consisting of asbestos shingle exterior walls with a an asphalt composition shingle roof surfacing.

I am not sure about the laws in your state, but mine, and most others, say you have to work under a more experienced, licensed broker before you can hang out your shingle.

Spray weed control twice a year Take a look at the roof, check for missing shingles, clogged gutters, other problems

They will remove the cooler, remove the jack, reset and reseal it, raise the legs, fix the shingles and seal them, and reset the cooler.

I think normal asphalt roofing shingles looks cheap. 

To me even $9k sounds a bit too much, assuming it's a basic shingle roof.  

The house I'm thinking about purchasing has not been shingled.

After a little while this would create an ice dam which would then continue up the roof backing water up under the shingles causing roof damage eventually.Another issue I see with it is that it would eventually get plugged up with grit and dirt then water wouldn't flow into your gutter anymore and probably begin to flow where you do not want it to flow.

The subject of putting a metal roof over an existing shingle roof was discussed.

.#3 Contact Local Contractors for Labor Pricing / Hire a GC to ConsultCall local Subcontractors and get budget pricing for common repairs on your typical rehab project.For example, call a roofer and ask what their average cost per Square of Architectural Asphalt Shingle Roofing would be on a 1,500 sf house, with a 6/12 pitch.Note: Some contractors will be reluctant to share pricing without seeing the property, but tell them you are just looking for a rough budget number you can use on future projects.You can also pay a General Contractor a consulting fee of a couple of hundred dollars (per house) to walkthrough a few properties with you and provide a detailed estimate of prices that you can use as your 'menu for future projects.#4 Compile Your Prices into a Spreadsheet or Estimating SoftwareOnce you start to get a better understanding of Labor and Material costs you will want to store this data into a spreadsheet or software that you can use to help you streamline the estimating process.The Book on Estimating Rehab Costs comes with a spreadsheet that you can use to help you populate your own database of labor pricing and material pricing.