Can someone recommend me a firm that does this, and what are the costs typically (ie percentage of purchase price, single dollar amount, etc.)I'd like to do it myself but would feel 1000 times better knowing I'm doing it in addition to a professional company and see what disparities arise between their analysis and mine. 

Unless you are trying to tell me he just pulled a random percentage out of thin air

Usually, expenses are estimated at 50% of the income but the financials might show a lower percentage.

Learn how to live on a percentage of your income... you can cut spending in some areas, but overall stay consistent with saving so you can invest- 

There's a lot of discussion around partnerships, private lending, and hard money, but I don't see much discussion on the actual mechanics - what these arrangements look like in practice.My hope is this post can serve as a reference for those starting out, so we may get a better understanding of how these strategies are actually implemented as well as an ability to more accurately predict the profits and returns you and your lenders and partners can expect.If those with more experience would like to revise these numbers and statements, it would be most appreciated.These scenarios assume you, the flipper, are bringing none of your own capital to the deal.Typically, this would mean 1 of 2 scenarios...Private Lending - Someone you know brings 100% of project costs (purchase, rehab, acquisition costs, holding costs) to complete the deal and in return, they get a certain percentage return which comes out of your profit.Hard Money + Partnership - You get a hard money lender to cover 80-90% of purchase+rehab and a partner to cover the remaining 10-20% as well as acquisition costs (including hard money origination and points) and holding costs (including hard money interest payments).An aside about the structuring...Private Lending - A promissory note is created, and your private lender lends to you or your business. 

Of course all markets are different dollar amounts and percentages, but I believe if you are marketing steadily, leads will come in and you can buy plenty of deals within your parameters.

Thus is the approximate water/sewer is $100, then each tenant pays $35, and the owner pays the balance.Sometimes I adjust the percentages based upon total occupants in the unit.

But I am unsure of what percentage I should put in for closing costs.

I'm interested to hear the percentage ownership may have changed to 20%, that would be a welcome development.

RIght now if you are just sharing the profit and loss per capital percentage, you dont need a complicated agreement. 3)Looks Like your lease on the condo is about the expire, so based on your situation, if you could live there for few more months, you could qualify for section 121, if not 1031 is always there.