Flower Mound will gain 8.6 acres for a detention pond and hand Argyle 62.2 acres deed-restricted mostly for parks under a boundary adjustment the Town Council approved 3-0 on Monday, Aug. 17.
The swap, totaling 70.5 acres between the two towns, was proposed to accommodate changes to Monarch, the mixed-use development near Denton Creek Boulevard and Interstate 35 West being built by Schmitz Realty Group of Denton.
The deal is not final. Argyle's Town Council is expected to vote on the boundary adjustment at its Monday, Sept. 21 meeting, and the town's attorney must also review it, according to the North Texas Sun.
Deputy Mayor Pro Tem Brian Taylor and council member Chris Drew were absent from the Aug. 17 meeting.
What each town gets
Flower Mound's 8.6 acres sit at a natural low point on the property and will be used for a dry detention pond supporting Monarch's drainage needs while increasing retail space along I-35W.
Argyle receives 62.2 acres: 59.3 acres deed-restricted for park and open space only, plus 2.9 unrestricted acres. According to a letter of intent, developer Centurion American will dedicate the parkland to Argyle for use by residents of Monarch, Canyon Falls and Avalon at Argyle.
The public currently has no access to the Argyle-bound parcel because of floodplain constraints near Denton Tap Boulevard, according to the staff report. Access exists from the Argyle side through Avalon at Argyle.
Lexin Murphy, Flower Mound's director of development services, said the boundary change is not considered annexation. The town has no extra-territorial jurisdiction land remaining, making future annexation unlikely.
Monarch amendments also approved
The council also approved several amendments to Monarch's planned development at the same meeting. The changes include:
- Reducing townhomes from 290 to 250, priced between $550,000 and $800,000
- Increasing allowed big-box retailers from four to five
- Adding a third gas station (requiring a separate special use permit for a standalone station not yet on the site plan)
- Allowing outdoor displays, sales and storage for two home improvement centers
The project's phasing trigger remains intact, according to the Flower Mound Bee: the first 150 townhomes cannot break ground until 150,000 square feet of commercial space is built, and the rest require 300,000 square feet finished first.
Planning and Zoning Commission Chairman Gregory Schultz, commenting during the council meeting, said: "It seems like a lot of this proposal is better in some ways, particularly what caught my eye was the max density being decreased. I think a lot of people will appreciate that."
Jonathan Kerby, a Kimley-Horn engineer representing the developer, pointed to TxDOT's recent Unified Transportation Program listing I-35W frontage roads and a Denton Creek Boulevard overpass as projects likely funded in the next two years, calling the infrastructure plans a "huge catalyst" for the development's retail component.
The Denton Creek Boulevard bridge has been open since fall 2025, though no timeline exists for the full road project's completion.
Argyle's Town Council meets Monday, Sept. 21 to consider its side of the boundary adjustment.
