Two Mat-Su subdivisions approved — and the small details say something about how the borough is growing

The Matanuska-Susitna Borough Platting Board approved two new residential subdivisions Thursday, and on the surface, neither is large. One adds three lots in Palmer; the other splits 144 acres of lake country into seven tracts. Together they're a snapshot of two different kinds of growth happening across Alaska's fastest-growing borough — and the economics of why subdivisions land where they land.

The Palmer project, Irons in the Fire Crest, was unanimously approved at three lots — half the size of the original six-lot proposal. Gary LaRusso, representing the petitioner, told the board the project was scaled back after city sewer extension costs proved too expensive to justify the larger configuration. The remaining lots, between 0.46 and 0.93 acres west of South Felton Street, will be served by city water and individual septic systems. Three public comments came in on the earlier six-lot proposal — one opposed — but staff reported no objections remained after the reduction.

That sewer-cost story is itself a small data point in a bigger Mat-Su pattern. The borough has been the fastest-growing in Alaska for years, but utility extension costs at the edges of built-up communities like Palmer and Wasilla regularly shape which projects pencil out at full scale and which scale back. A six-lot subdivision becoming a three-lot subdivision because of sewer math is the kind of decision that, repeated across dozens of plats a year, slowly determines the density and character of borough growth.

The second project, Connolly Homestead, is the other kind of Mat-Su development. The seven-tract subdivision spans 144 acres between Delinda and Butterfly lakes, west of the Parks Highway, and most of the tracts are accessible by float plane rather than road. Tim Carmen of Bull Moose Surveying, representing the petitioner, said the lots are all over 400,000 square feet — large enough to be exempt from soils and engineering data requirements. Tract A already has a well and existing structures; the rest is undeveloped.

Two written objections came in after the staff report. One raised concerns that overland access, parking, and canoe storage at the lakes could become overburdened. The other flagged drainage on two flagpole tracts and suggested lake-only access as an alternative. No one testified at the hearing. "Seeing no objection, the motion passes," the board chair said as the vote closed.

Both plats were approved with standard conditions. Together they capture something the platting board sees often: Mat-Su growth doesn't look like one thing. It looks like Palmer infill that has to negotiate with city utility bills, and it looks like 20-acre tracts on the edge of float-plane country where the access debate is about canoe storage. Both are happening at the same meeting, and both are reshaping the borough one plat at a time.