The zoning distinction matters more at refi than at acquisition, in my experience watching deals go sideways. What I keep seeing is owners treat live-work like it's interchangeable with straight commercial and then get blindsided when the appraiser refuses to use their NNN retail comps entirely. The appraiser on a live-work unit is almost certainly going to pull residential gross lease comparables, not NNN retail, which means your $1,450 might actually look strong on paper but your expense load is now being treated differently too because gross leases absorb landlord costs that NNN doesn't. On a 650-square-foot unit that spread between gross and NNN treatment can swing your NOI by $4,000 to $6,000 annually per unit, which on a cap rate of 5.5 in Sacramento right now moves your valuation more than people expect.
The thing I've never once seen work is trying to draft a hybrid lease that borrows language from both structures to satisfy both a residential and a commercial lender simultaneously. Operators do this thinking they're being clever and flexible, and what actually happens is neither lender will underwrite it cleanly, you end up with a document that creates ambiguity around tenant rights under California residential tenancy law even though the space isn't purely residential, and you're looking at potential dispute exposure if a tenant decides to claim residential protections. Pick a lane on the lease structure before you're in front of a lender, because your current month-to-month or whatever those tenants are on at $1,450 is fine for now but it's going to be the first thing a serious underwriter asks about and "studio tenants on informal terms" is not a story that tightens a cap rate.