I'm in the process of finalizing talks with an investor to commence a real estate development project and would greatly appreciate assistance in clarifying a few things given certain scenarios:Investor injects 100% of financing into a project.

To inject $70k cash into a property that only yields an additional $500 a month to me is not worth it given its a residential property.

I’m doing all the work myself and I’ve already fixed those two issues with temporary roofs over the window wells and using epoxy injection kits to seal the cracks in the foundation.

Since it was well within my budget it was a no brainer for me to buy and convert that to livable space, instantly injecting equity.

You'll be injected money every month and saving for reserves on your own. 

You either need to build your own team, or inject yourself into another team that is already doing it and successful. 

There's a university, a college, opp head quarters, hydro one is building a grid control centre which is projected to inject 200-300 million into the local economy in the short term.

Companies 1 & 2 (Polyurethane Injection) accepted the job, while company 3 (mudjacking) said he can lift the driveway, but the concrete slab must be removed and company 4 (Polyurethane Injection) rejected due to the poured concrete on the driveway.

You can direct the activities - think fund manager - but cannot benefit personally or inject value into the IRA/401(k) via the provision of services such as sweat equity.There is lots of good information here on BP on the topic. 

Companies 1 & 2 (Polyurethane Injection) accepted the job, while company 3 (mudjacking) said he can lift the driveway, but the concrete slab must be removed and company 4 (Polyurethane Injection) rejected due to the poured concrete on the driveway.