Anthony,You would be surprised by using some old school methods like simply writing a letter like you mentioned. 

His methods are unsafe and unwise.

My interest are house flipping and the BRRRR method.

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

These methods include:Detailed Engineering Cost ApproachDetailed Engineering Cost Estimate ApproachSurvey or Letter ApproachResidual Estimation ApproachSampling or Modeling ApproachExperience or “Rule of Thumb” ApproachFor further details on the methodologies, refer here.WHAT ARE THE BEST AND WORST PROPERTIES FOR COST SEGREGATION STUDIES?

Consider strategies like rental properties, BRRRR method, flipping for capital gains, multifamily properties, mobile home parks, Section 8 housing, geographic diversification, and building a team.

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

Options ive looked at are the Burrrr method, house hacking with fha living in the property for a year doing small upgrades and forcing appreciation refinance then rent and repeat that every year until we reach our goal.

I've done various methods and would be happy to connect and knowledge share if you are interested.

Even though I had a full size W/D on site, I still used this method.....