Under the Density Bonus Ordinance, Modesto’s density bonuses are awarded in relation to the percentage of affordable units provided. If a developer shows economic necessity, an additional incentive may be provided by the city (reduction in site development standards, modification of zoning requirements, financial incentives, and donation of land). A 25% density bonus may be awarded for condominium conversions if 33% of the total units are for moderate income, or 15% are reserved for low-income. A ten-year restriction is placed on the deed if a density bonus is awarded, and a thirty-year restriction is imposed if a bonus and incentive are awarded.