The construction crew at the very large development site on 4th Avenue between 16th Street and Prospect has been ramping up work on the property’s foundation in the past couple of months, most likely to try to qualify for 421-a abatements before new regulations take effect this July. According to DOB filings, the architect of record for the planned building is the prolific Bricolage Designs, and its developer is Gregory Rigas. Original plans filed for the structure called for 12 stories and 80 units, though more recent new building filings show that it will be at least nine stories high (unclear if it will go to 12). According to a South Slope resident who wrote to us, the crew routinely blocks off two to three lanes of traffic on 4th Avenue, which is a major pain in the ass for drivers at a very busy intersection near the entrance to the BQE. There was no evidence of that when we checked in on the site yesterday afternoon, though the property is not a stranger to controversy: someone on the Forum complained about garbage pile ups in the fall. The photo on the jump gives a sense of how big the entire development is. GMAP