This triplex is zoned R1, which means the property is currently limited to three units. However, you may be able to add one ADU (accessory Dwelling Unit), bringing the total to four units on the property. You could also consider expanding or remodeling the existing units to make them larger, or even demolishing and rebuilding. Just keep in mind that the zoning would still limitr the property to three primary units, plus a potential ADU. Additionally the porperty cannot exceed two stories in height under the current zoning regulations..