Hawaii Administrative Rules › Title 13 - DEPARTMENT OF LAND AND NATURAL RESOURCES › Subtitle 1 - ADMINISTRATION › Chapter 5 - CONSERVATION DISTRICT › Exhibit 4 - Single Family Residential Standards

Current through June, 2024
August 12, 2011
Minimum Setback: For lots under one acre:
Front: 15 feet
Sides: 15 feet
Back: 15 feet
For lots over one acre:
Front: 25 feet
Sides: 25 feet
Back: 25 feet
Allowable building area extensions 36 inches in 15-foot
				  setback 42 inches in 25-foot setback (e.g., eaves and cantilevered
				  decks).
Exceptions: Site characteristics and lot shape may be a
				  factor in adjusting minimum setbacks when so determined by the board.
Shoreline Setback: The shoreline setback line shall be
				  established based on a setback distance from the certified shoreline of 40 feet
				  plus 70 times the average annual coastal erosion rate, based on a coastal
				  erosion study as defined in this chapter. No shoreline setback shall be
				  established for any lot subject to this chapter unless the application for a
				  shoreline setback line includes a shoreline survey certified by the department
				  not more than 12 months prior to submission of the permit application. The
				  shoreline setback line shall be based on the average lot depth
				  (ALD)1 measured from the current shoreline.
For lots with an ALD of two hundred feet or less, the
				  shoreline setback line shall be established based on the ALD of the lot, as
				  provided in Table 1, or based on 40-feet plus 70 times the annual erosion rate.
				  The applicant may choose the lesser of the two methods, but in no case shall
				  the shoreline setback line be calculated to be less than 40 feet.
The department may waive the requirement for coastal erosion
				  study based on supportive documentation from the applicant. Such documentation
				  may include, but is not limited to, county or state approved coastal erosion
				  rate data provided through the University of Hawaii, School of Ocean,
Earth Science, and Technology, or evidence that the erosion
				  rate is zero.
TABLE 1: AVERAGE LOT DEPTH
If the average lot depth is:
100 feet or less
101 to 120 feet
121 to 140 feet
141 to 160 feet
161 to 180 feet
181 to 200 feet
Then the minimum setback distance is:
40 feet
50 feet
60 feet
70 feet
80 feet
90 feet
Maximum Developable
Area (MDA): Means the total floor area in square feet allowed
				  under the approved land use. The floor area computation shall include: all
				  floor areas under roof, including first, second, and third story areas, decks,
				  pools, saunas; garage or carport, and other above ground structures.
For lots up to 14,000 square feet, the maximum developable
				  area is 25 per cent of total lot area.
For lots over 14,000 square feet to one (1) acre, the maximum
				  developable area is 3,500 square feet.
For lots larger than one (1) acre, the maximum developable
				  area is 5,000 square feet.
Exceptions: Site characteristics and the degree of
				  pre-existing site disturbance may be a further limiting factor in the
				  calculation of maximum developable area when so determined by the board.
Maximum Allowable Building Envelope:
No portion of any building (excluding any allowed chimney,
				  antenna, vents, solar panels or other renewable energy structures, or similar
				  structures) shall protrude above the maximum allowable building envelope. The
				  top of the maximum allowable building envelope shall be a vertical plane
				  parallel to and twenty-five feet above the existing grade measured by vertical
				  plumb line.
Exceptions: Areas within the flood zone may allow
				  consideration for additional heights above the maximum allowable building
				  envelop to comply with the National Flood Insurance Program requirements when
				  so determined by the board.
Compatibility Provisions:
Compatibility with surrounding environs. Structure is
				  designed in accordance with standard conditions and criteria, including:
- Landscaping - screening of structures
- Color of paint/surface of structure and roof -earth tones,
				  or compatible with surrounding area
- Department of Health wastewater permit/water collection
				  system approval
- Grading/contouring of property kept to minimum with
				  consideration of slope
- All structures connected, or best alternative
- In conformance to applicable building and grading code and
				  shoreline setback provisions
- One kitchen2
1 Average lot depth (ALD) shall be
				  calculated as follows: (1) measure the two sides of the property that are at or
				  near right angles to the shoreline; (2) measure the length of a line connecting
				  the mid-point of the seaward (shoreline) side of the property to the mid-point
				  of the landward side of the property; (3) add these three (right, left, center
				  lines) measurements together for a total; (4) divide the total by three to
				  obtain the ALD.
2 "Kitchen" means a facility
				  within the residential dwelling for food preparation, including fixtures,
				  appliances or other devices to wash, prepare, heat, cook, and refrigerate food
				  and wash cooking utensils and dining implements.