I've been reviewing contractor bids for thirty years. Here's what I know.
An incomplete bid doesn't look incomplete. It looks competitive. It looks professional. It shows up on time with a cover page and a handshake and a reference list. What it doesn't show up with is everything the project actually requires.
The things that kill budgets are never in the bid. They're in what the bid doesn't say.
Vague line items. Missing code requirements. Structural work that isn't mentioned because mentioning it loses jobs. Mechanical upgrades the existing system can't avoid. Site conditions that every experienced contractor knows will surface and nobody prices until they do.
The investors winning right now have two things most don't. An accurate scope before they make an offer. And a contractor relationship built on something other than whoever returned the call first.
The scope tells you what the project actually costs. The relationship tells you whether the number you're looking at is real. Without both you're underwriting a deal on incomplete information and hoping the gap between the bid and the reality isn't big enough to kill it.
Most of the time it is.
Getting to an accurate scope before you commit isn't complicated. It requires someone who has written enough bids from the other side to know exactly where the gaps are and what they cost when they surface.
That's the work. What does your current bid look like and where in the process are you?