An incremental project would deliver the most technically challenging, expensive, but integral parts of a house- such as proper foundations, supporting walls, basic plumbing, and core neighborhood infrastructure, often partially or fully subsidized. Recipients can then use their own funds to finish, polish, extend and otherwise improve and personalize their houses according to their needs. Incrementalism ensures the basic structure is sound, and in line with neighborhood plans, reducing long-term costs of maintenance or re-building. Meanwhile, it avoids micromanaging the house design or raising prices above the affordability threshold, providing more space and higher quality than the recipient can afford. The study finds that the cost of adding additional rooms and features drops dramatically after the foundation and plumbing have been provided. Hence, it is much easier for low-income households to extend or complete a house than to find capital for an entire finished unit.