1429 1st Avenue is a 3 story office building located in the upper east side neighbourhood of Manhattan. Further information on rent, lease office 1429 1st Avenue includes the following. 1429 1st Avenue does not currently have coworking options available. We can get you the best deals on coworking. No Fee. We negotiate to get you the best deals.The Zip Code for 1429 1st Avenue is 10021. 1429 1st Avenue contains 18,768 square feet of office space for rent. The office space is rated Class C. Construction of 1429 1st Avenue finished in 1910. Small, medium and large options for rent office 1429 1st Avenue are available. In addition to nearby office building lease options, sublease 1429 1st Avenue options may be provided as well.