Purchase price: $260,000 Cash invested: $120,000 Sale price: $535,000 Complete gut, new front and rear walls, all new electric, HVAC, plumbing, roof, deck, windows, interior What made you interested in investing in this type of deal?

Not too bad when the inventory is low, the number of sales is low (like a 30 year low), interest rates are high and prices are high. 

Purchase price: $850,000 Cash invested: $500,000 Sale price: $2,250,000 Purchased , knocked down, built new from ground up What made you interested in investing in this type of deal?

They either list owner-occuiped houses for sale or know they can show a normal buyer 5-10 houses for a sale.- It's not profitable for them to search for under-market priced houses, figure out repairs needed or what other problem is pushing the price down and do even more for a newbie investor that has analysis-paralysis and may never buy anything.Some questions you'll want to share the answers to with any agent you choose:1) Are you paying cash or getting a mortgage?

You will need to justify the sale price of those assets to the new owner at their then current value on your books.It is a big hassle to do this, but it can make you a lot of money if you do it right and are careful in your record keeping.

Purchase price: $840,000 Cash invested: $75,000 Sale price: $1,200,000 Full renovation of all 4 units.

For the son to qualify for the $250k exclusion, I believe he would most likely need to meet the ownership and use test, meaning he needs to own and live in the home as his primary residence for at least two of the last five years before the sale.

Quote from @Milena Garcia: this sale I hope is all done after 2 months..

Actually, it is possible do structure a 1031 Exchange on the sale of one or more relinquished properties and then using the proceeds through the 1031 Exchange to construct improvements on real property you already own.

I've seen some templates for sale online, but lets be honest, who really wants to PAY for a freaking spreadsheet!?