Chapter 6 - Subdivision Improvements Required

19-6-1 - Application of Improvements Required.#

This Title applies to all property owners located in any subdivision and owners of property serviced by easements or rights-of-way or improvements set forth in KCC 19-6-3, which have been acquired or installed by a pioneer developer or the City. Its provisions shall apply to all transferees, assignees, or purchasers.

19-6-2 - Improvements Made Prior to Recording Final Plat.#

The improvements required by the City, including the improvements in each and every open space in the subdivision, shall be constructed and installed by the Subdivider and thereafter maintained by the Subdivider until after the warranty period and acceptance by the City. Improvements shall not be installed or constructed until their location and specifications have been approved by the City Engineer. In cases where a pioneer developer or the City has already acquired easements or rights-of-way or installed improvements subject to the Fee for Project Improvements provisions of KCC 19-6-4, no recording of the final plat or issuance of building permits shall be permitted or allowed until the Fee for Project Improvements provisions of said Section have been satisfied.

(Ord. 21-10-07, 10/21/2021)

19-6-3 - Improvements Required.#

The improvements shall include all street improvements in front of all lots and along all dedicated streets to a connection with existing improvements of the same kind or to the boundary of the development nearest existing improvements. Layout must provide for further extension to adjacent development and to be compatible with the contour of the ground for proper drainage. All water lines, sewer lines, and any other buried conduit shall be installed to the boundary lines of the development. The owner of any land located in or platted as a subdivision shall install the following improvements in compliance with the specifications contained in the Specifications and Standard Drawings: 1.

Sewage Collection.

a.

Unless the applicable sewer district deems it to be unfeasible, the Subdivider shall connect to the sanitary sewer and provide adequate lateral lines to the property line of each lot. Such sewer connections and subdivision sewer systems shall comply with the regulations and specifications of, and shall be approved by the applicable Sewer District and Kaysville City. All sewer lines must be extended across the entire frontage of all existing streets and to the boundary of the subdivision on all existing or proposed City streets.

2.

Groundwater. The Subdivider shall protect the structures from groundwater by:

a.

Digging at least one (1) test hole per acre or part thereof, at locations approved by the City Engineer, and determining the depth of the groundwater table and the permeability and percolation rate of the soils. These tests shall be performed by a qualified soils engineer at the Subdivider's expense. If a groundwater drainage system is installed to City standards, with a lateral provided to each lot for a footing drain, this testing is not required.

b.

Preparing a detailed groundwater plan for the subdivision showing the minimum level of all floors and crawl spaces. If any floor or crawl space is to be installed within one foot (1') or below the groundwater table or where the permeability and percolation rate of the soil is not adequate, the Subdivider shall install a groundwater drainage system to City standards, with a lateral provided to each lot for a footing drain.

c.

Making improvements to adequately remove groundwater and prevent groundwater entry into buildings, including crawl spaces.

d.

Preventing the discharge of surface water drainage into the groundwater drainage system.

3.

Storm Water. A storm drainage plan has been prepared and is maintained by Kaysville City and Davis County. The subdivider shall implement the portion of that plan, in accordance with the City's Drainage Evaluation and Design applicable to the subdivision by:

a.

Preparing a detailed drainage plan for the subdivision which is acceptable to the City that has been prepared in accordance with the City's Drainage Evaluation and Design Manual, which may be amended from time to time.

b.

Making sufficient improvements, such as storm drains, cross gutters, catch basins, inlets, detention basins, LID facilities and other appurtenant structures, to adequately address the WQV and dispose of the appropriate frequency storm runoff within the subdivision and from adjacent properties. Said disposal system shall include the retention or treatment of the WQV, as detailed in the City's LID Manual. Storm drains shall be not less than fifteen inches (15") in diameter for inlets and eighteen inches (18") in diameter for mainlines and meet all other City standards and specifications.

c.

Design storm frequencies are designated in the City's Drainage Evaluation and Design Manual.

d.

The post-construction release rate shall be equal to or less than the preconstruction discharge. Under no circumstances shall the post-development discharge be greater than 0.2 cfs per acre for a 100-year design storm. Runoff restrictions shall be provided through one (1) or more of the following, at the direction of the City:

i.

Conveyance (including easements) of the runoff to a regional detention/retentions/treatment site and paying the subdivisions proportional share of the cost of the regional detention facility and conveyance to the main channel; or

ii.

Dedicating land and constructing regional detention/retention/treatment within the subdivision and conveyance to the main channel if said subdivision contains a proposed detention site. The subdivider may be compensated for a portion of the cost of the regional detention and conveyance to the main channel for that which is not the proportional share for the subdivision.; or

iii.

Conveyance of the runoff to a site within the subdivision dedicated and constructed for detention and/or retention.

e.

If the subdivision is within one hundred feet (100') of a natural drainage over which Davis County has jurisdiction, complying with all Davis County Flood Control standards and shall be approved by Davis County if the drainage is a recognized Davis County Flood Control channel.

f.

The storm drainage plan is not intended to and may not eliminate periodic accumulation of standing water on various lots in the subdivision during periods of heavy rainfall or runoff.

g.

Unless otherwise directed or agreed to by the City Engineer, and infrastructure not located in a City right-of-way that is installed or used for the conveyance/treatment/detention of storm water shall require a Storm Water Maintenance Agreement to be approved by the Storm Water Official and shall be recorded with the Davis County Recorder's Office, as per KCC 9-3d-8.

4.

Culinary Water. The Subdivider shall install water lines to make the water supply available to each lot within the subdivision, including laterals to the property line of each lot. The location and size of water mains shall be approved by the City Engineer. Unless otherwise directed by the City Engineer, subdivision water lines shall be a minimum of eight inches (8") in diameter and service laterals shall be a minimum of 3/4-inch in diameter. All water lines must be extended across the entire frontage of all existing streets and to the boundary of the subdivision on all existing or proposed City streets.

5.

Fire Hydrants. Fire hydrants shall be installed as required. Such fire hydrants shall be of the type, size, and number as directed by the City Engineer, and installed in such locations as approved by the City. A fire hydrant shall also be placed at the end of every dead-end water line, including the end of cul-de-sacs.

6.

Irrigation Water. In accordance with KCC 18-3-7, pressure irrigation shall be provided to each lot in residential subdivisions.

a.

All gravity flow ditches through which water will continue to flow within a subdivision after its completion, whether to serve as irrigation water and/or waste flow to go from any adjacent property, shall remain in use and be piped with a minimum pipe size of at least fifteen inches (15") and shall be approved by the City Engineer and irrigation provider. Irrigation ditches which will not carry irrigation water and/or waste flow shall be removed.

b.

The Subdivider shall install pressure irrigation lines to make pressure irrigation available to each lot within the subdivision including laterals to the property line of each lot. All plans and specifications for pressure irrigation systems shall be submitted to the City Engineer and irrigation provider. Such system must be approved by the City and irrigation provider. In accordance with KCC 9-4-15, it shall be illegal for any person to connect together a culinary water system and a non-potable water system by any method.

c.

The Subdivider shall comply with all the requirements of the provider and furnish proof thereof to the City.

d.

Unless otherwise directed by the City, irrigation water and infrastructure shall remain isolated from and independent of storm water and infrastructure.

7.

Street Grading and Surfacing. All streets whether existing or proposed, shall be graded and surfaced, including a preventative maintenance surface treatment (as approved by the City) applied on all new asphalt pavement in streets, in accordance with the standards and specifications of Kaysville City and the design for each street. Existing streets shall be modified to drain and function properly.

8.

Curbs and Gutters. Curbs and gutters shall be installed by the Subdivider on existing and proposed streets in accordance with all the appropriate specifications of Kaysville City. Curb and gutter shall be thirty inches (30") wide standard high back style, and shall be placed in six inches (6") of compacted untreated base course as foundation materials.

9.

Street Drainage. Street drainage and drainage structures shall be required where deemed necessary by the City Engineer and/or as specified by the City's Drainage Evaluation and Design Manual. Drainage facilities and structures shall address storm water quality to comply with State and EPA regulations and requirements, as outlined in the City's LID Manual.

10.

Sidewalks. Sidewalks shall be installed according to the specifications of Kaysville City. Sidewalks shall be at least four feet (4') wide with four inches (4") of compacted untreated base course material as foundation materials. Depth of sidewalks shall be four inches (4"), except at driveways, which shall be six inches (6"). Sidewalks located less than five feet (5') from the top back of curb shall be six feet (6') wide.

11.

ADA Ramps. ADA ramps shall be constructed at legal pedestrian crossings or a marked crosswalk. Ramps shall meet the requirements of the ADA accessibility guidelines and City technical specifications. Running slopes shall not exceed 8.33% and cross slopes shall not exceed two percent (2%). Ramps shall be four inches (4") thick over four inches (4") of compacted untreated base course as foundation material.

12.

Active Transportation Improvements. Subdivisions which include or are adjacent to an element of the Kaysville City Active Transportation Plan shall account for and install the applicable improvements including off street shared use paths and street improvements such as striping.

13.

Driveway Approaches. All driveway approaches shall meet the following specifications:

Specification Residential Type Commercial, Industrial, and Institutional

Minimum width 10 feet 10 feet

Maximum width 40 feet 40 feet

Minimum concrete thickness 6 inches 8 inches

Minimum base course thickness 6 inches 6 inches

Minimum distance between driveways 12 feet 12 feet

Minimum distance between driveways in a cul-de-sac 6 feet, 10 feet of clear space for snow storage from plowing required on either side of the center line (20 feet total) at the end of the cul-de-sac

Minimum distance to the point of intersection of two property lines at any street intersection 20 feet 40 feet

14.

Monuments. Permanent survey monuments shall be accurately set and established at the intersections of centerlines of streets within the subdivision and intersections with centerlines of existing streets and the beginning and ends of curves on centerlines or points of intersections or tangents. All permanent survey monuments shall remain in place, or be reset at the subdivider's expense, after curbs, gutter, and sidewalks are installed. Monuments shall be of a type specified in City standards, and all subdivision plats shall be tied to a section corner or monument of record, as established by the Davis County Surveyor.

15.

Electric Power System.

a.

The subdivider shall pay the cost of electric system extensions and street lights, installed by the City, to service the subdivision.

b.

The subdivider shall be responsible to facilitate the extension of electrical distribution lines by:

i.

Planning the installation of utilities to each lot or site to be served to preclude conflict between other utilities and the electrical distribution lines.

ii.

Scheduling and coordinating the actual installation of improvements to allow adequate time for construction of electrical distribution lines.

iii.

Notifying the Kaysville City Power Superintendent upon completion of adequate site preparation to allow installation of electrical distribution lines.

c.

The subdivider shall prepare the site for electrical distribution line installation before notifying Kaysville City to install said lines. Site preparation shall include but not be limited to:

i.

Installation of curb and gutter indicating permanent grade.

ii.

Markers installed on curb indicating property lines.

iii.

The area extending from property side of sidewalk away from the street for ten feet (10') leveled to final grade.

iv.

Utilities installed less than four feet (4') below final grade not extending beyond the property line more than twelve inches (12").

d.

The subdivider shall provide the trenching and excavations for installation of underground facilities unless waived by the City.

e.

The subdivider shall back fill, compact, test, and guarantee the back fill of excavations for underground facilities installed.

16.

Street Signs. The subdivider shall pay the cost of traffic control, street identification, and other street signs, installed by the City, in accordance with City standards. The cost will be charged to the subdivider and shall be paid before the plat is recorded. The improvement assurance in the subdivision will not be released until after payment of the costs incurred to install the necessary street signs has been made.

17.

Fencing of Subdivision. A permanent solid board, metal chain link (with opaque slats if required), masonry, or other similar fence not less than six feet (6') in height shall be installed prior to the start of building construction along all boundaries with properties adjacent to the subdivision where adjacent uses are found to be non-compatible by the City. In addition, temporary construction fencing shall be installed along appropriate boundaries or where required to contain blowing refuse prior to the start of building construction, as recommended by the City. The construction fence shall remain in place until ninety percent (90%) of the lots are built on. The construction fence shall be type "D" field fence as given in the specifications. Upon installation of the permanent fence by the subdivider, and approval by Kaysville City, individual property owners shall assume full responsibility for maintenance of fences or portions of fences constructed upon their property and shall not hold Kaysville City responsible for any and all defects of workmanship, maintenance, repair, and liabilities of any nature arising from the construction or intended use of said fences. In situations where a temporary construction fence and a non-climbable permanent fence coincide, the non-climbable permanent fence shall take the place of the temporary construction fence and shall be constructed prior to the beginning of construction within the subdivision.

18.

Marking of Lots. Survey markers shall be placed at all lot comers and at lot boundary locations to completely identify the lot boundaries on the ground. Lot comers shall be identified with permanent plugs in the sidewalk or back of the curb or with a metal pipe or rod driven into the ground if sidewalks or curbs are not next to the lot boundary. All lot comers and lot boundaries shall be marked prior to the issuance of building permits, after the completion of all subdivision improvements and during building construction and inspections. It shall be the responsibility of the lot owner to insure that all lot comer and boundary markers are in place. The City is not responsible to replace survey stakes or markers.

19.

Highway Noise Abatement. Highway noise abatement, as determined through environmental studies and engineering analysis and approved by the City, shall be provided in all residential subdivisions within three hundred feet (300') of a freeway or principal arterial. Noise abatement may include distance of noise sensitive uses from noise sources, landscaping, earth berms, and other mitigation. The subdivider shall pay the entire cost of any noise abatement studies and noise abatement facilities.

(Ord. 19-05-03, 5/2/2019; Ord. 21-10-07, 10/21/2021; Ord. 24-01-03, 1/18/2024; Ord. 25-06-03, § 30, 6/19/2025)

19-6-4 - Fee for Project Improvements.#

1.

A pioneer developer, at its own expense, with the approval of the City, or the City, at its own expense, may acquire easements or rights-of-way or install any improvements referred to in KCC 19-6-3.

2.

In all instances where any such easements or rights-of-way have been acquired or improvements have been installed which are planned and designed to provide service for development of a site and are necessary for the use and convenience of the occupants or users of development of a site, the City may determine the portion of such easements, rights-of-way or improvements that are site improvements and allocate to the site a pro rata cost of such casements or rights-of-way acquisition or improvements. Such pro rata cost shall be referred to as the "fee for project improvements."

3.

Notice of the fee for project improvements shall be given to the affected property owners by certified mail. The affected property owners may appeal the decision to the administrative law judge in accordance with KCC Title 2, Chapter 8. Any such appeal shall be in writing and submitted to the Office of the City Recorder within twenty (20) days of the decision.

4.

Whenever development activity occurs on any such site, the owners thereof shall pay to the city the fee for project improvements as a condition of development approval. The fee for project improvements paid shall reimburse a portion of the cost incurred by the pioneer developer or City as applicable.

(Ord. 26-09-01, § VII, 9/3/2026)