The pitch sounds great: legally split your fourplex or 8-unit into individual condo parcels, get each unit appraised on the retail comps instead of the income approach, and reach a higher total value.
Condo conversion was my world for years. When we built new construction duplexes, triplexes, and fourplexes, we regularly condoed them and sold to individual end-unit buyers. I have also helped investors un-condo buildings after the conversion blew up their operating numbers. Both experiences taught the same lesson: the condo map is an exit strategy decision, not a value hack.
What conversion actually costs
Even on a fourplex, expect about $15,000 to do it right: an attorney, HOA formation, CC&Rs, surveyors, and a recorded condo map at the county. That is the cheap part. The expensive part is what changes afterward.
What changes after you condo
Your property taxes go up. Not "might go up." As I said on a call when a member proposed parceling an 8-unit: they are not probably going to go up, they are going to go up. The county reassesses each unit individually on retail values, which is precisely the higher value you were chasing. You just converted your paper win into a real annual expense.
Insurance gets rewritten. Coverage has to be written per condo unit rather than one policy on one building, and in this insurance market that is rarely a friendly conversation.
Your investor exit gets harder, not easier. This is the one nobody sees coming. An investor who buys an 8-plex gets one portfolio or commercial loan. An investor buying your 8 condos has to finance 8 individual units. You have made the building harder to buy for exactly the buyer pool most likely to purchase it. Your own refinance options change the same way.
Selling to owner-occupants requires real infrastructure. An HOA with dues, a master plan covering exteriors and commons, and Fannie or Freddie condo approval if your buyers need conventional financing. None of that is optional, and all of it is work.
And once you have condoed, going back is painful. Trying to sell a condoed building as a regular multifamily is quite a mess. I know because unwinding that mess for other investors used to be part of my job.
The decision rule
One question decides it: who is your end buyer?
If your exit is selling units individually to owner-occupants, conversion can absolutely make sense. Retail buyers pay retail prices, and the spread over the income-approach value can be well worth $15,000 and an HOA's worth of paperwork. This works best on small multifamily in neighborhoods where entry-level buyers are hungry.
If your exit is a refinance-and-hold or a sale to another investor, do not condo. You will pay the conversion costs, eat the higher taxes and insurance forever, and shrink your buyer pool at exit.
If you are not sure, do not. The option to condo later never expires, but the conversion itself is close to a one-way door.
One more nuance: condo the building only when you are serious about selling the units individually and soon. Condoing "for optionality" while operating it as a rental gives you all of the costs and none of the exit. If the goal is pulling equity out of a stabilized building, the BRRRR-style cash-out refinance does that without touching the parcel structure.

