Most take near a year in southern Ca, but you hear of exceptions in both directions on that timeline.What some developers are doing here is leveraging the affordability issue and getting permission to build additional ADUs by designating some as affordable or semi affordable units.  

There are a lot of market-specific issues you'll have to grapple with and also, there are plenty of landmines in MFR on its own in CT that you'll have to be ready for, in addition to the nuances and complexities of developing something like this.

I am considering working with a property developer in NJ to buy land, build a duplex/triplex and sell it (6-9 month time horizon).  

Do you do any development projects? 

There are obviously a lot of variables that come into play.I'm looking at developing a small 2 acre property that has already been engineered for septic and platted for 8 mobile homes. 2 MH are already on site with all utilities present, but for the 6 MH remaining that I want to put on site, the land still has to be developed.

I think hard money lender to take this risk cannot legally charge appropriately which means the law is working against you (the law meant to protect owner occupied owners from unfair loans).I agree with @Jay Hinrichs that your best option likely is to sell on the mls.  

Current Construction Co. and Resolute RDM have acquired this development project in Lebanon, MO.

Quote from @Andy Tack: Hi Lance, we are developing a project that is partially in a flood zone also.

Out of these areas, Franklinton and Linden are seeing some of the most developments.

If you want to develop it, I can refer you a lender that will lend on a completed subject to appraisal but you'll be limited if you just want it for the lot.If you simply want the land as part of your property, you have more options including a HELOC which you can still use for development down the road.