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KCC §8-4.4

Rules for building homes on subdivided land

Read the official text at ecode360.com ↗

This section sets lot size, width, length, and setback rules for single-family detached, attached, and multi-family homes when land is subdivided. It also covers open space, maintenance easements, building distances, and construction requirements. The rules depend on the density district and other county standards.

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The ordinance, as written (Kauaʻi County) — Development Standards for Residential Structures Which Involve the Subdivision of Land

A copy, taken August 22, 2026. The version published by Kauaʻi County is the one that governs, and it may have changed since. Check it before relying on anything here.

Single Family Detached Dwellings. Subject to the density and acreage limitations in the particular Residential Density District, as provided in Sec. 8-4.2, the following criteria shall apply where an applicant seeks subdivision approval to create lots for single family detached dwellings:Lot Area.The minimum average lot area shall be 6,000 square feet;No lot shall be less than 4,500 square feet; andNo more than 20% of the lots in the proposed subdivision shall be less than 6,000 square feet.Lot Width.Minimum average lot width shall be 60 feet;No lot shall be less than 45 feet in width;No more than 20% of the lots in the proposed subdivision shall be less than 60 feet in width;No more than six lots less than 60 feet in width shall be located adjacent to one another;The pole section of a flag lot shall not be less than 15 feet in width.Lot Length.The average length of any lot shall not be greater than three times the average width;The maximum length of the pole portion of a flag lot shall be 150 feet.Setback. The minimum distances from property lines shall be as required by Sec. 8-4.3(b), except that the applicant may indicate varying front setbacks on the subdivision map so long as no front setback is less than 10 feet.Subject to the density and acreage limitations in the particular Residential Density District, as provided in Sec. 8-4.2, where an applicant seeks approval of a horizontal property regime, all single family detached dwelling units shall be located in a manner as to conform to the requirements of this Article as if they were to occur on separate subdivided parcels or lots.Requirements for parking, access, driveways, building height, utilities and other regulations not specified in this Section shall be the same as those required of all residential development as established in Sec. 8-4.5.Single Family Attached Dwellings. Subject to the density and acreage limitations in the particular residential density district, as provided in Sec. 8-4.2, the following standards shall apply where an applicant seeks subdivision approval to create lots for single family attached dwellings:Lot Area.The minimum average lot area shall be 3,000 square feet;No lot shall be less than 2,400 square feet;No more than 40% of the lots in the proposed subdivision shall be less than 3,000 square feet;There shall be a permanent open space in common ownership and readily accessible to each single family attached lot usable for recreation and community activities other than streets, driveways, and parking, equal to no less than 30% of the total area of all single family attached lots.Lot Width.The minimum average lot width shall be 30 feet;No lot shall be less than 24 feet in width;No more than 40% of the lots in the proposed subdivision shall be less than 30 feet in width;No more than six lots less than 30 feet in width shall be located adjacent to one another.Lot Length. The average length of any lot shall not exceed four times its average width.Setbacks.Minimum front setbacks shall be the same as required by Sec. 8-4.3(b);Minimum sideyard setback shall be the same as required by Sec. 8-4.3(b), except that the minimum setback from property lines between single family attached dwellings within the same subdivision shall be either less than six inches or greater than five feet;Minimum rear setbacks shall be 15 feet unless a maintenance easement is required in which case minimum rear setbacks shall be 25 feet.Maintenance Easements. Easements shall be provided for maintenance access to the rear or exposed sides of all single family attached lots which do not have exterior access. Side access easements shall be not less than five feet and rear access easements shall be not less than 10 feet.Distance Between Buildings.When the parallel walls of two or more single family attached units are not over one foot apart, they shall be considered as one building in determining the minimum distance between buildings;The minimum distance between buildings shall be the same as required by Sec. 8-4.3(c), except that the minimum side to side distances between any portion of adjacent buildings must be five feet or greater if the side to side distance is more than one foot; and no more than six attached single family dwellings may be placed adjacent to one another where all dwellings are within 20 feet of one another;Minimum distances between single family attached dwellings and single family detached or multiple family dwellings shall be as required by Sec. 8-4.3(c).Subject to the density and acreage limitations in the particular residential density district, as provided in Sec. 8-4.2, where an applicant seeks approval of a horizontal property regime, all single family attached dwelling units shall be located in a manner as to conform to the requirements of this Section as if they were to occur on separate subdivision parcels or lots.Construction Requirements. No lots for single family attached dwellings, as provided in this Section, shall be sold or leased until the dwelling units and other improvements to be erected on the lots, as indicated on construction plans or which were required as a condition of a zoning permit, have undergone at least 50% construction or completion and that the developer has deposited or provided the County of Kaua'i with a 100% Bond from the inception to the completion of the project.Requirements for parking, access, driveways, building height, utilities and other regulations not specified in this Section shall be the same as those required of all residential developments as established in Sec. 8-4.5.Multiple Family Dwellings. Subject to the acreage limitations in the particular residential density district, as provided in Sec. 8-4.2, the following standards shall apply where an applicant seeks subdivision approval to create lots for multiple family dwellings:Lot Area. The minimum lot area shall be 10,000 square feet.Lot Width. The minimum lot width shall be 80 feet.Lot Length. The average length of any lot shall not exceed three times its average width.Setbacks. Minimum setbacks shall be as required by Sec. 8-4.3(b).Distance Between Buildings. Minimum distance between buildings shall be as required by Sec. 8-4.3(c).Maximum Lot Coverage. The amount of land coverage created, including buildings and pavement, shall not exceed 50% of the lot or parcel area. This requirement shall not apply to separate lots or parcels used in common for parking or other community uses.Requirements for parking, access, driveways, building height, utilities and other regulations not specified in this Section shall be the same as those required of all residential development as established in Sec. 8-4.5.
Read the official text at ecode360.com ↗as published Jan 1, 2026our copy taken Aug 22, 2026

The County of Kauaʻi publishes this code through eCode360 and states that it is provided for information only and should not be considered the official version of the Code.

LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.