Foundation repair · Selma, TX
Foundation repair in Selma and Garden Ridge, on the clay-to-limestone line.
Selma and Garden Ridge bracket the geological seam on the metro's northeast side: Selma down on the Blackland flats along I-35, Garden Ridge up on the limestone rise toward the hills. Ten minutes apart, two different foundation stories.
Selma's growth has been retail-corridor fast — newer slab subdivisions tucked behind the 35 frontage, now hitting their first drought cycles. Garden Ridge runs older and larger: custom homes on acreage, where drainage on grade matters more than clay ever will.
RETAMA PARK AND THE FORUM TO THE KENSINGTON RANCH AND RETAMA SPRINGS SUBDIVISIONS, THE WHOLE I-35/LOOP 1604 WEDGE — ON OUR DAILY NORTHEAST RUN.
What we see in Selma
The local patterns, specifically.
Selma's first-cycle subdivisions
The year 3–7 pattern arrives on schedule: pad consolidation plus first hard drought, right as builder coverage ends. Dated elevation baselines matter most here.
Garden Ridge acreage drainage
Large custom homes on sloped, wooded lots — roof water concentration and fill-side settlement, the Hill Country playbook at the metro's edge.
Retail-corridor vibration myths
Living near the 35 frontage raises questions about traffic vibration. The honest answer: the clay's seasonal swing moves slabs orders of magnitude more than any highway does.
Transition-seam lots
Streets straddling the clay-limestone line can have neighbors with opposite foundation stories. Lot-level measurement beats neighborhood-level assumption every time.
USDA soil check
The USDA maps the dominant soil under Selma as Altoga — moderate shrink–swell (linear extensibility ≈ 4.8%). This ground shifts some with the seasons; most movement shows up slowly, as hairlines before anything structural.
See the Altoga soil series at USDA →The ground behind the Forum
Selma sits on Blackland "black gumbo" that drains to Cibolo Creek.
Selma is a tiny tri-county city — spanning Bexar, Guadalupe, and Comal — pinned to the northeast side of I-35, and it sits on the Blackland Prairie's black-gumbo clay: high shrink-swell ground that swells in a wet spring and shrinks through a dry August. The land drains toward Cibolo Creek, and there's no limestone shelf here to hold a slab edge steady, so the seasonal wet-dry cycle is the dominant foundation story across town. It concentrates at the slab edges with the most sun and evaporation — the west- and south-facing corners that bake hardest.
That makes diagnosis lot-specific. When one slab moves and the neighbor's doesn't, the difference in Selma is rarely the geology — it's a downspout corner, grading that drifted toward the house, or a tree drawing moisture out of one edge in drought. Drought pulls the exposed edges down; the first hard storm heaves the dried clay back unevenly. Most of the cracked drywall we're called about is that cycle meeting fresh drywall, not a failing foundation — which the free elevation survey confirms.
A retail boom on old ground
From 788 people to nearly 11,000 — growth built on the Forum, not the farm.
Selma incorporated in 1964 and stayed a rural crossroads until retail transformed it: Retama Park opened its horse-racing track in 1995, and The Forum at Olympia Parkway — the open-air power center at I-35 and Loop 1604 — opened in 2000. Those two anchors turned Selma from 788 residents in 2000 into nearly 11,000 by 2020, and the housing that filled in behind the frontage is overwhelmingly young, slab-on-grade, and hitting its first drought cycles right now.
The city's subdivisions — Retama Ridge, Retama West, and the newer Retama Springs (2015 and later), Olympia Hills, Forest Creek, Live Oak Hills, Creekside Gardens and Creekside Ridge, and the Trails at Kensington Ranch — sit on engineered pads that mostly perform well. The pattern is timing-driven: builder warranties expire around year two, pad consolidation plus the first hard drought arrives around years three to seven, and that's when the stair-step cracks and sticking doors start the phone calls. A dated elevation baseline, taken before your structural warranty window closes, is the objective evidence that makes a claim — or peace of mind — possible.
Neighborhood by neighborhood
Selma foundation repair, street level.
Retama Springs
A 2015-and-later subdivision on engineered pads — some of Selma's newest slab stock. Young foundations on the front of their first drought cycles: hairlines normal, a dated baseline worth taking while builder coverage is open.
Retama Ridge & Retama West
Established residential streets near the Retama Park track. Where cut-and-fill met native clay at a lot edge, the seam telegraphs as cracks near garage returns a few summers in — worth measuring, rarely urgent.
The Trails at Kensington Ranch
An HOA-managed subdivision on the growth side of town. Classic corridor timing brings the earliest cracks around years 3–7; most are cosmetic settling meeting fresh drywall.
Creekside Gardens & Creekside Ridge
Newer neighborhoods where drainage across the lot is its own variable near the Cibolo Creek watershed. Standing water at the slab after storms is the fixable cause we flag before it becomes a pier conversation.
Forest Creek & Live Oak Hills
Established Selma streets with mature landscaping. Decades of beds and patios can reverse the original grading — drifted drainage toward the house is a common, often complete, fix.
Our work near Selma
Real foundation repair across Selma and the corridor.
Your nearest Motmot office
San Antonio (Main Office)
4402 Vance Jackson Rd Ste 206, San Antonio, TX 78230. Call or text (210) 816-0034.
Open 24 hours
Our main shop at Vance Jackson and Loop 410 runs the San Antonio metro daily — and a second office in San Marcos covers the upper corridor.
Available in Selma
Every service, the full corridor, the same free inspection.
Selma specifics
Asked by Selma homeowners.
From the Learning Center
Reading for Selma homeowners.
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