Commercial values can be manipulated.
I can give the tenant many freebies like several months of free rent and credit in remodeling in exchange for higher future rents.
Then when tenant pays the higher rents (fooling the appraiser and investor), I can get higher valuation based on cap rates.
You literally don't know what you're talking about. We perform rental surveys for the specific purpose of identifying those trends. Then we take rent loss/bonus rents into consideration.
Let's say you overstate your net income on your multi-tenant retail. I only capitalize that portion of the net income that is attributable to the market rents/expenses. If there's additional income that isn't supported in the market I just tally the dollar amount over the remainder of those leases and tack that on as an adjustment. I don't include it in the direct calitalizatin.
For example, you might report a net income for your 10000 sf retail property at $200k whereas the market rents/vacancies are pointing to $140k. Even if I were to believe the additional $60k was real I'm not going to value it by assuming its continuance in perpetuity and therefore using a cap rate on it. I'm going to tally the rents based on their current lease option. If the average length of time on those leases is (let's say) 24 months then the total of those bonus rents only amounts to $120k. Not $60k / .06 cap rate = $1M.
It won't look like this
$200k / .06 cap rate = $3,333,333
But rather like this:
$140k / .06 cap rate = $2,333,000
+_(sum of bonus rents)_$120,000
--------------------------------------
________________________$2.45M
(I also state that the reported rents are not supported in the market and use an EA that they are accurately being reported, so the lender knows to check up on them)
I could run a DCF on the bonus rents (or rent loss) but the outcome would remain the same except perhaps for some rounding due to the increased flexibility in the DCF to consider the rents individually.