I co-own several investment props. with other family members.
Unfortunately, everytime something needs to be repaired no one can agree to do it. It is directly leading to the deterioration of one of the props.
Here is a typical scenerio: I get several bids for (necessary) work such as a roof repair. I present the bids to family members only to be to be blocked. I am told, "those prices are crazy" and "my friend will do it for less", etc., etc. Of course they have no idea what the cost of repairs really are because they are not out there on the job. What can I do to break this cycle?

Seems like whoever is the lead property manager needs some authority to make decisions within a certain cost limit. When it goes over that limit then maybe you need 2 partners to sign off, then when you hit the next limit, maybe you need everyone to sign off.

Lastly, I think you should get the family together each year and talk about capital projects and set a budget. As long as you are within the budget, you should be able to proceed.

When you are told by one of them that they can get it done cheaper make them get it done cheaper. "Put up or shut up" usually works.

You are doing a primitive form of fractional ownership with your families. You may want to have a by-law and run it like a business. Because doing major repairs is a serious business. You need to have a governing body that makes important decisions for these homes. Fractional homes that are not well managed can run into trouble when something big comes up. There is little way to reach a decision.