Most apartment owners in Los Angeles know their building needs a soft-story retrofit. What they don't know is exactly where their building is most likely to fail — and why that specific spot has claimed more multifamily structures in major earthquakes than any other single design flaw.

The answer sits right below your tenants' feet. It's the tuck-under parking garage.

What "Soft Story" Actually Means — And Why Tuck-Under Is the Worst Version

A soft-story building is any structure where one level is significantly weaker than the floors above it. That weakness usually comes from large open spaces — fewer walls, fewer columns, more open floor area. The ground floor bears the weight of everything above it, and when seismic energy travels through the earth and hits your foundation, it has to go somewhere.

In a tuck-under parking configuration — where carport or garage spaces are carved directly into the ground floor beneath living units — that energy has almost nowhere to go. The open bay created by parking spaces removes the very shear walls that would otherwise absorb and redirect lateral seismic force. The result: the soft story collapses inward, and the floors above pancake down onto the garage level.

This isn't a theory. It's exactly what happened in the 1994 Northridge earthquake, where tuck-under apartment buildings across the San Fernando Valley collapsed or became structurally condemned within seconds.

The Failure Point Most Owners Never Visualize

Here's what most property owners' picture when they think about earthquake damage: cracked drywall, broken windows, fallen chimneys. Cosmetic. Fixable.

Here's what actually happens in an unreinforced soft-story tuck-under failure:

The columns supporting your second floor are slender and under-braced. When the ground shifts laterally — side to side — those columns don't bend. They buckle. The moment they lose their vertical load path, every floor above them drops. The failure isn't gradual. It's instantaneous.

The specific failure point is called column hinging — where a column loses its ability to carry vertical load because lateral displacement has exceeded its design capacity. In tuck-under parking, the columns are maximally exposed: no shear walls on either side of the parking bay, no bracing between the carport opening and the perimeter of the building. It's the structural equivalent of a table with its two center legs kicked out.

What makes this more alarming: the building may look perfectly fine on the outside. No cracks. No visible damage. The vulnerability is entirely internal — hidden in the connection between your parking-level framing and the floor diaphragm above.

Why the 2026 Deadlines Make This Urgent Right Now

Los Angeles' soft-story retrofit ordinance has been enforced since 2017, and SKS Construction has completed over 800 soft-story retrofits across the region. But several cities surrounding LA are now hitting their own compliance deadlines in 2026 — including Burbank, Torrance, Culver City, Pasadena, and Glendale.

If your multifamily property falls under one of these jurisdictions and you haven't completed your retrofit, you're not just sitting on a structural risk. You're facing city-issued fines, potential tenant liability, and a forced timeline that strips away your ability to negotiate pricing or plan the work on your terms.

The cost of a voluntary, planned soft-story retrofit is a fraction of the cost of emergency structural stabilization — or the cost of a total loss.

What a Proper Soft-Story Retrofit Actually Does

The engineering solution to tuck-under parking vulnerability isn't cosmetic — it's structural. A properly designed retrofit introduces one or more of the following systems:

Steel Moment Frames — Rigid steel frames bolted into the existing structure that resist lateral movement without requiring solid walls. These are the most common solution for tuck-under configurations because they preserve the open parking bay while dramatically increasing lateral resistance.

Shear Walls — Plywood or steel-reinforced wall panels added at strategic locations within or around the soft story to redirect seismic force. These are used where the parking configuration allows for wall placement without eliminating required parking spaces.

Combination Systems — For buildings with severe plan irregularities, asymmetrical footprints, or heavily loaded upper floors, engineers often combine moment frames and shear walls to distribute seismic demand across multiple load paths.

The key word in all of this is engineer. A soft-story retrofit is not a contractor job. It is a structural engineering problem that requires licensed analysis, custom design, and city-reviewed plans. Any firm offering you a retrofit without in-house engineering is outsourcing the most important part of the project.

What SKS Does Differently

SKS Construction has been design-building in Los Angeles since 1987. Our in-house licensed structural engineers don't just review plans — they design the retrofit specific to your building's geometry, load conditions, and parking configuration. We handle everything under one contract: structural design, engineering drawings, permit filing, city submissions, construction, and final sign-off.

No hand-offs between an architect, an engineer, and a contractor. No gaps in accountability. No subject-to-change pricing clauses. You get a fixed-price bid, direct owner access, and a 39-year track record on over 3,000 completed projects — 80% of them for repeat clients.

We've completed over 800 soft-story retrofits in Los Angeles County alone. We know where tuck-under buildings fail. We know how to fix them before they do.

Your Building Isn't Going to Warn You

Tuck-under parking buildings don't develop obvious warning signs before an earthquake exposes their weakness. There's no creaking. No visible deflection. No cracking that tells you the column connections are undersized. The risk is invisible until it isn't.

If your building was constructed between 1950 and 1980, sits in Los Angeles or a surrounding city, and has ground-floor parking beneath residential units, you have a soft-story tuck-under building. The only question is whether it's been retrofitted.

Get a FREE Structural Assessment — Before the Deadline

SKS Construction offers FREE soft-story retrofit assessments for multifamily property owners across Los Angeles, Burbank, Glendale, Torrance, Culver City, and Pasadena. Our in-house engineer evaluates your building's specific tuck-under configuration, reviews your existing construction documents, and gives you a fixed-price retrofit proposal — no obligation, no surprises.

Call us at (818) 855-1181 or email info@sksconstruction.com to schedule your FREE assessment today.

Don't wait for a deadline notice. Don't wait for the next major earthquake. The tuck-under parking problem has a solution — and 39 years of engineering-led construction is ready to deliver it.

SKS Construction | Design | Engineer | Build | Since 1987 (818) 855-1181 | info@sksconstruction.com