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Item 7A - Development RegulationsResidential Planned United Development District Land Use and Development Regulations and Open Space Management Plan for the 22.27-acre development at 1330 N. Peytonville Ave. Southlake, Texas 21 January 2026 Case # ZA25-0066 Coleigh Homes This Residential Planned Unit Development shall abide by the all conditions of the City of Southlake Comprehensive Zoning Ordinance No. 480, as amended, as it pertains to the "SF-1A" Single -Family Residential zoning district; and the City of Southlake Subdivision Ordinance No. 483, as amended, with the following exceptions: Lot Width: Lot widths shall be measured along the Front Yard setback line for each lot as indicated on the Zoning Development Plan. Lot Coverage: All buildings or structures shall have a maximum lot coverage not exceeding forty percent (40%) of the lot area, except the sum total of accessory buildings shall not exceed 2,000 square feet. Setbacks: Front Yard: 40' Side Yard: 20' Rear Yard: 40' The following regulations shall apply to the lots: Minimum House Size: All new houses constructed shall be a minimum of 5,500 s.f. living space in floor area. Streets: A 31' B-B pavement section with a mountable curb not to exceed 6" & 50' Street R.O.W. shall be provided along the frontage of all residential lots. The cul-de-sac shall be the standard 100' B-B diameter paving, in a one hundred twenty (120') foot ROW. The lot cul-de-sac length shall not exceed 1,500 sq ft. Waive the requirement per Section 5.03.K.1 that the existing dead-end street located in the Cross -Timber Hills Addition, specifically Wood Creek Lane, will not be joined to this development. Sidewalks: No sidewalk shall be required along the internal street frontage of all Residential Lots or within the Open Space. Applicant, and Owner, desire to preserve as many trees as possible and ensure existing wildlife areas are left as undisturbed as possible. There are only 10 lots (5 on each side of the street) on one side of the Open space and 5 on the other. There will be minimal foot traffic along the roadway, and we feel like the tree preservation on this heavily wooded lot is a higher priority than sidewalks at this time. In addition, if granted, there will be no sidewalks along Peytonville, so foot traffic would only originate within the neighborhood. Applicant, and Owner, received lengthy feedback during the SPIN meeting to avoid any connection to existing neighborhoods to preserve privacy and excess development in the natural environmental space. The streets and side/ rear lot lines shall generally be configured as shown on the Development Plan, allowing for some flexibility to save specific trees. The proposed stormwater system shall be designed in accordance with the City of Southlake's design criteria. As a result, the proposed drainage system consisting of pipes, inlets and detention will be designed such that the proposed developed flows discharged downstream will not exceed the existing drainage conditions. Applicant's design will not exceed 25% of the Open Space. This development shall have one primary vehicular entry from Peytonville (resident -only) gated access point meeting the fire safety requirements and the single street built to standard city specifications. Postmaster has reviewed and approved and will have final approval for designated CBUs for resident US mail/package delivery points. Alternate proposed solution for inherited Stormwater from Peytonville Rd. This solution will not affect any of the Applicant's requests above. The Open Space used for a detention area may change and we have noted that below at the appropriate level of detail we have at this time. However, it should be noted that the proposed detention area is within an existing drainage channel and the said detention will be designed to include the conveyance of the existing off -site stormwater. For this reason, the configuration of the proposed detention area may deviate from the area identified on the preliminary detention exhibit provided to the city. In addition, the applicant would hereby request a waiver to eliminate the 25% detention to open space limitation so that additional detention could potentially be provided to further reduce the downstream drainage impacts. Background: Applicant's Engineering & Landscape team have reviewed a HALFF study completed in 2021 that contains specific recommendations regarding Stormwater flow to the east of this requested RPUD, specifically stormwater that flows across Peytonville Rd from the east. This stormwater accumulation is primarily caused from stormwater that flows east to west across Peytonville Rd then over proposed Lot 1 and into the Post Oak Trail subdivision. This existing issue has been well documented over the years, and City of Southlake attempted to address the stormwater with the current Owner as far back as 1999. Applicant has shared a written agreement between current Owner's Estate and the City of Southlake where Owner gave up private land to the City of Southlake in exchange for the Stormwater issue to be cured. This agreement also allowed the City of Southlake to install a sewer line. Applicant has also been shared videos from the current residents of the stormwater flooding homes, yards and roadways in Post Oak Trail addition to the south prior to the SPIN meeting. Applicant has been told that many residents in the area have registered written and verbal requests to the City of Southlake regarding this specific issue for over 10+ years. Analysis/Conceptual Design: Applicant and the City of Southlake staff have met several times to review an Applicant proposed solution to this Stormwater problem which allows for a one-time (from a timing perspective) opportunity to cure the stormwater with minimal impacts from an environmental, cost to the city, and citizen infrastructure (roads ways) perspective. Applicant and City of Southlake staff are working through the details to reach a point where the City Leaders can properly evaluate and potentially approve a solution that would be included during the construction phase of the proposed Jane's Place development. A detailed design and analysis will come during the platting phase of this application should the zoning be approved and the City of Southlake determines that funds are allocated to proceed with a project. Currently proposed potential outcomes: • City of Southlake to add improvements to the east side of Peytonville Road to capture and convey stormwater flows through the proposed development to a tributary of Higgins Branch and ultimately into the main channel of Higgins Branch. Applicant will be retained through the existing City of Southlake process to design & perform the work. • Applicant will allow the City of Southlake to utilize additional open space area to offset Peytonville Rd stormwater flow at the city's discretion. Applicant will be retained through the existing City of Southlake process to design & perform the work. There is approximately 80,000 cubic feet of additional detention capacity available within the proposed development. However, it should also be noted that this area is within the same existing drainage channel as identified above and is subject to the same deviation in design to provide for conveyance. • City of Southlake to add infrastructure to move that flow into existing and new retention areas and then to final release point into the Higgins Branch (at the same general area where existing surface stormwater enters the system). Applicant will be retained through the existing City of Southlake process to design & perform the work. Open Space Management Plan: Intended Usage: The common open space areas of the project are intended for the quiet enjoyment of the residents within the development where access is provided. The HOA will maintain all open space areas, the private roadway, and the 10' landscape buffer along Peytonville (including the 4ft easement with fence and entry signage). All Common Open Space shall be owned and maintained by a Homeowners Association (HOA), to be established for the development. All other areas shall be the responsibility of the individual property owners, including the front yards. All property owners shall be required to be a member of the HOA. Dues assessments, required for the maintenance of the common areas, the private roadway, and other HOA activities, shall be mandatory. The HOA, through a resident Board of Directors, shall be responsible for the maintenance and operation of the protected open space within the development and the private roadway, either directly or through a third -party management company. No full-time employees are contemplated to be necessary. The expenses required to maintain the common areas at a quality level shall be estimated annually by the HOA Board, and dues shall be determined and assessed on each property owner in an equitable fashion at such a rate as necessary to maintain such a level of quality. Authority to enforce these requirements, and to place a lien on the property if such dues are not paid, shall be in the form of written Deed Restrictions and Covenants, agreed to by all property owners in the HOA at purchase, and shall run with the land. Provisions shall be made, in the HOA bylaws and Deed Restrictions, that in the unlikely event the HOA fails to maintain all or a portion of the protected open space in reasonable order and condition, the City of Southlake may, but is not required to, assume responsibility for its maintenance and take corrective action, including the provision of extended maintenance. The costs of such maintenance may be charged to the HOA or individual property owners that make up the HOA, and may include administrative costs and penalties which shall become a lien on all property in the development.