Multi-Family and Apartment Investing
Market News & Data
General Info
Real Estate Strategies

Landlording & Rental Properties
Real Estate Professionals
Financial, Tax, & Legal


Real Estate Classifieds
Reviews & Feedback
Updated almost 10 years ago on . Most recent reply
SFR with possible separate basement unit...?
Ran across a listing recently which was a 3br/2ba. 2/1 on main level and 1/1 in the basement. Kicker is that the basement has a fully equipped kitchen as well. I am a wannabe househacker so this is pretty intriguing to me.
There is no true separate entrance, but the entry to the basement is the same breezeway as the back door to the main level. Seems like adding a legitimate (fire?) door would do the trick nicely to make it feel like a separate unit.
Has anyone gone through something similar? Wondering how to legitimatize it into a true second unit? Zoning concerns, legal/permit costs?
Located in a urban residential neighborhood of Denver.
Most Popular Reply

@Mitch H. and @Dan Mackin be careful about calling Denver. I called on a property someone offered me. They are now paying an attorney $5K to get the property grandfathered in as a 4 unit despite it being taxed as a 4 unit. The property records only had it listed as a 3 unit.
So many things to look for in these situations.
This is my flow chart if you will.
1) What do the property records show? 1 or 2 units? If only 1 unit then raise red flag but not a white flag (yet).
2) Zoning. Does zoning allow for two units? If not, raise the white flag unless you can prove the unit was there prior to the zoning change that made it non-conforming (If you got a red flag on item 1 and here then probably not worth further investigation). First zoning was adopted in the mid 1950s and the latest in 2010. If it was legal before the change and in use then the second unit might be grandfathered in (see above regarding cost of proving so). Usually this is not worth the hassle IMO unless it's a slam dunk. If there is any question about it's continuous use as a duplex for the last 50 years, it's probably not worth your time.
3) Building code. Unless it was built this year, it will not likely conform to building code. If it was and is in use as a duplex then nothing is required to be done at this time. The kicker comes if you do any work that you pull a building permit for. They can then make you do upgrades to meet their requirements just to pass a something as simple as a drywall inspection. Things like egress windows and hardwired smoke alarms. I have not had them make any noise about fire separation on existing construction but that's not to say they won't.
Incidentally, up/down duplexes are the worst investment property to manage. They often share utilities, furnaces and ducts, and circuit breakers. Tenants are always complaining about each other and they can be a real pain.