Ventura iD Rent-Ready Spec makes your investment home instantly rentable. Your investment can start working for you now. House Behind House - A house-behind-house is a smart way to add value to your existing property. Duplex - Building two residences on a single block allows you to look at multiple investment. Large Unit Site - Larger unit sites are approached on a case-by-case scenario as every site is unique. Triplex - Developing a triplex site is easy when you can choose from our standard layouts or design your own with our team.