Division 10-30.70:
Residential Sustainable Building Incentives
Sections:
10-30.70.010 Purpose
10-30.70.020 Applicability
10-30.70.030 Density Bonus
10-30.70.040 Minimum Standards
10-30.70.050 Residential Sustainable Building Incentive Agreement
10-30.70.010 Purpose
A. This division implements the City’s desire to foster the production of energy and resource efficient residential buildings. The City recognizes that resources are scarce and valuable, and that one of the ways to develop a truly sustainable community is to encourage the development of sustainable buildings.
(Ord. 2022-04, Amended, 3/1/2022 (Res. 2022-05))
10-30.70.020 Applicability
This division may be applied to new construction and remodeling of the following types of residential developments:
A. All residential developments constructed under Category 3, Permanent Affordability and Residential Sustainable Building, of Table 10-30.20.050.A, Percentage of Affordable Units and Corresponding Density Bonus;
B. All residential subdivisions or multifamily residential developments.
10-30.70.030 Density Bonus
Density bonuses for new residential developments shall be applied as follows:
A. Category 3, Permanent Affordability and Residential Sustainable Building. Affordable residential developments shall apply the density bonus established in Category 3 of Table 10-30.20.050.A, Percentage of Affordable Housing Units and Corresponding Density Bonus, as permitted in Section 10-30.20.050, Density Bonus, to guarantee that at least a portion of the residential units will be permanently energy efficient;
B. Market Rate Residential Units. When a development complies with Section 10-30.70.040, a density increase of 25 percent above the maximum density permitted in the designated zone shall be allowed. The additional units and bedrooms shall not be included in the calculations for determining if a development is considered a high occupancy housing development.
(Ord. 2022-04, Amended, 3/1/2022 (Res. 2022-05))
10-30.70.040 Minimum Standards
To qualify for density bonuses established in Section 10-30.70.030, Density Bonus, the development must meet requirements in each of the four following areas:
A. Water Resource Protection. The development shall comply with at least one of the following:
1. The landscape design for the development shall not include an oasis zone (hydrozone 1) as otherwise permitted in Section 10-50.60.050.C, Oasis Allowance, and Section 10-50.60.060, Hydrozones; or
2. Developments with 20 or more dwelling units shall be connected to the City’s reclaimed water system for use in irrigation; or
3. All buildings within a residential development shall be dual plumbed so that rainwater captured in an active rainwater harvesting system can be used in addition to potable water subject to applicable State, county and City standards; or
4. All buildings within a residential development shall be dual plumbed for the use of greywater in toilets subject to applicable State, county and City standards.
B. Transportation and Air Quality. The development shall comply with subsection B.1. or B.2. of this section.
1. Electric Vehicle Charging.
a. Developments With Five or More Dwelling Units. Electric Vehicle Charging Supply Equipment (EVSE) shall be provided in accordance with Table 10-30.70.040.B.1.
|
Parking Spaces Provided |
Spaces With Electric Vehicle Supply Equipment Required |
|---|---|
|
1 - 50 Spaces |
2 Spaces |
|
51 - 100 Spaces |
4 Spaces |
|
101 and Above Spaces |
6 Spaces |
b. Developments With Less Than Five Dwelling Units. All dwelling units shall have one vehicle parking space with an electrified 240-volt outlet socket.
2. The Development Site shall be located within 1,320 feet of a permanent transit stop. The distance between a permanent transit stop and Development Site shall be measured following a continuously improved sidewalk and/or public trail unless otherwise approved by the Director and Sustainability Director.
C. Waste Reduction and Management. The property owner of the Development shall obtain approval from the Sustainability Director, or designee, of both a materials management plan, and a construction and demolition waste management plan, both demonstrating a significant reduction in landfill waste. The plans shall be provided in accordance with the requirements on file with the City’s Sustainability Program.
D. Energy Efficiency. The Development shall comply with the requirements in one of the following categories and any required certification or verification of compliance shall be provided by an approved third-party verified/certified professional and approved by the Sustainability Director, or designee:
1. All-Electric, Zero Energy Building.
a. All residential buildings, and residential areas of a mixed-use Development, including residential leasing and operation areas, of the Development shall be constructed in compliance with and verified as a zero energy building as defined by U.S. Department of Energy; and
b. Natural gas plumbing shall not be provided within the development.
2. All-Electric, Energy-Efficient Building.
a. All residential buildings, and residential areas of a Mixed-Use Development, including residential leasing and operation areas, of the Development shall:
i. Achieve bronze-level certification within the National Green Building Standard (ICC-700), as amended, for all residential buildings of the development; and
ii. Be constructed to achieve a building energy efficiency that is equal to or greater than a 15 percent improvement over the City of Flagstaff’s current energy code as specified in the Building Code. The U.S. Department of Energy’s REScheck software, or another method approved by the Building Official, shall be used to demonstrate compliance energy efficiency requirements; and
b. Natural gas plumbing shall not be provided within the Development, unless approved by the Sustainability Director, or designee. Acceptable exceptions for the use of natural gas include:
i. Fireplaces and outdoor grills provided in common and shared use areas and cooking appliances within nonresidential uses of a Mixed-Use Development; and
ii. Other uses that do not significantly increase the annual carbon emissions of the development, as approved by the Sustainability Director, or designee.
3. All-Electric Building With Verified Performance in Energy, Water, and Air Quality.
a. All residential buildings and residential areas of a Mixed-Use Development, including residential leasing and operation areas, of the development shall achieve the U.S. Environmental Protection Agency’s:
i. Energy Star Multifamily New Construction Certification, or Energy Star for Homes New Construction Certification; and
ii. Indoor airPLUS label; and
b. All residential buildings will meet the requirements of the WaterSense for Homes 2.0 Mandatory Checklist, available on file with the City’s Sustainability Program.
c. Natural gas plumbing shall not be provided within the development.
(Ord. 2022-04, Amended, 3/1/2022 (Res. 2022-05); Ord. 2016-07, Amended, 2/16/2016 (Res. 2016-02))
10-30.70.050 Residential Sustainable Building Incentive Agreement
A. The property owner shall enter into a residential sustainable building incentive agreement, or other agreement approved by the City, to allow an increase in residential density in accordance with the provisions of this division. The agreement shall be in a form satisfactory to the City Attorney, or designee, and recorded against the property.
(Ord. 2022-04, Amended, 3/1/2022 (Res. 2022-05))