But to be very sure you're covered on liability I would take pictures, measure the depth, and make sure your agent has all that information.

Measurements, income, who cares.You withdraw in good faith.

Are you looking for a detailed, written comprehensive estimate with measurements, scope, and other pertinent details so you can then go shop that estimate around with other GCs? 

When doing metal I think they use regular measurements not by the square.

My inspection report only listed "sealing juncture between flooring material and tub as a preventative measure", no mention of the faucet leak.

Quote from @Adam Pervez: Yes, a plumber can install water meters on separate lines to measure use.

I'm curious to hear how to best plan and budget for this.What specific measures have you taken to manage and optimize the costs and coverage of insurance policies for your multifamily housing investments, and what advice would you give to fellow investors navigating this complex area of risk management?

I'm studying a lot of deals and this looks like a much better way to evaluate and compare deals over long periods of time than CoC or other ROI measures, and it makes it easier to compare to stock market returns as well. 

But asset management and property management will be where the value is created or preserved, value-add may become more of a defensive measure, and so-so investors and sponsors will no longer get bailed out by compressing cap rates and extreme rent growth.

Actual measurement revealed 610sf.There no right answer here and in some ways, we all are saying similar things - I think we all agree the data is important.