New driveways and patios settle. It is almost always the backfill consolidating — and in year one or two, it is almost always the builder's responsibility. Here is the honest timeline of new-construction settlement, what the warranty actually covers, how to document it, and what to do when the builder says "it's normal."
To build your house, the builder excavated a hole, built the foundation in it, and put the dirt back. That replaced dirt — the backfill — will never be as dense as the undisturbed ground it came from, no matter how well it was compacted. Over the first few years, it consolidates: air pockets collapse, soil particles settle tighter, and anything sitting on the backfill drops with it. Your porch slab, the driveway section by the garage, the sidewalk along the foundation — all of it is riding on backfill.
It is not just the foundation excavation. Utility trenches are settlement highways: the water line, sewer lateral, gas line, and electrical conduit were all buried in trenches that were dug across your lot and refilled. Where a trench crosses under your driveway, you get a neat linear settlement zone a year or two later. Irrigation and landscaping work after move-in disturbs more soil. And in the Salt Lake Valley's growth corridors — Draper, Lehi, Herriman, Daybreak — whole subdivisions are graded out of hillsides, which means some lots sit on deep fill of varying compaction quality. Compaction varies lot by lot, which is why your neighbor's driveway can be perfect while yours drops two inches.
The key insight: this is a soil-density problem with a timeline, not a mystery. And timelines are something you can hold a builder to.
Construction consolidation follows a predictable curve. Year one shows the most movement: hairline cracks appear, joints open slightly, and the classic signs show up — the porch slab drops a half inch from the foundation, the driveway dips where it crosses the utility trench, water starts pooling in a low spot by the garage. Year two brings less movement. By year three, a healthy lot is essentially done; the backfill has found its final density.
What is NOT normal at any point in that timeline:
If what you are seeing matches the "normal" column, documentation and patience (plus drainage management) are the play. If it matches the "not normal" list, skip to the warranty section — the clock is ticking.
Tell us the age of the home, where the concrete is dropping, and what the builder has said so far. We will tell you whether it sounds like normal consolidation or something worth pushing on — before you spend a dollar.
Most Utah production builders include a one-year workmanship warranty covering defects in materials and workmanship — and concrete flatwork usually falls under it, with language about "excessive" settlement or cracking. Some builders extend specific systems to two years; structural (foundation and framing) coverage runs longer and is a separate matter. But the details live in YOUR documents, not in this article: find the warranty booklet from closing, locate the concrete/flatwork section, and read what it actually promises.
Then follow the process the document describes, in writing. Email — not a phone call — to the warranty department, before the expiration date, with dated photos and ruler measurements of every affected area. Phone calls are where "it's normal settling, give it another year" lives; emails create a record. If the warranty rep dismisses the claim verbally, reply asking for the denial in writing with the specific warranty language cited. "It's normal" is easy to say; it is much harder to type next to a photo of a two-inch drop.
Two warnings from experience. First, do not let the warranty expire while "waiting to see." If you reported the issue in writing during the warranty period, you have preserved the claim even if the builder slow-walks the repair past expiration — but only if you reported it. Second, if the builder does agree to fix it, ask what the fix includes: a re-pour over uncompacted backfill will settle again. The repair should address the soil underneath, not just the concrete on top.
Whether you are pursuing a warranty claim or just tracking the situation, good documentation is free and powerful. For each affected area:
Check with neighbors, too. If half the street has a settled sidewalk section, that is not a coincidence — it is evidence about the subdivision's compaction, and it strengthens both your warranty conversation and your contractor's diagnosis.
If the builder will repair under warranty, let them — it is their responsibility and their money. But stay involved: ask what the repair includes (soil compaction, drainage correction, or just new concrete?), get the scope in writing, and photograph the finished work the same way you photographed the problem.
If the warranty has expired, the builder refuses, or you simply want it handled right, hiring your own lifting contractor is usually the smart money. Lifting a settled section costs a fraction of replacement — most residential lifts land between $500 and $3,000 (see the cost guide) — takes hours rather than days, and keeps your existing concrete so everything matches. A mudjacking lift on a settled sidewalk section typically runs $350–$700; polyurethane foam on the same section runs $900–$1,900. Get two or three written bids and run them through the checklist in how to choose a contractor.
One thing not to do: nothing, while the warranty clock runs. Settlement near the foundation that reverses your drainage grade is actively delivering water to your foundation with every storm — and "we are waiting to see if it gets worse" is not a strategy. Document it, report it in writing, fix the drainage, and keep the timeline on your side. (See what happens if you don't fix sinking concrete for the full cost of waiting.)
| When | What is normal | What to do |
|---|---|---|
| Months 0–12 | Hairline shrinkage cracks, minor joint separation, small drops near backfill | Document everything; manage drainage; report issues to builder in writing |
| Year 1–2 | Continued minor consolidation along trenches and backfill | Pursue warranty claims before expiration; do not let the clock run out |
| Year 2–3 | Movement slowing to nearly nothing | Lift remaining settled sections yourself if the builder will not; fix drainage |
| After year 3 | Essentially no new movement expected | New or accelerating settlement = new cause (usually water); diagnose fresh |
Hairline shrinkage cracks — thin, shallow, not growing — are normal in the first year; concrete shrinks slightly as it cures and almost every slab shows some of it. Settlement is different: one section dropping relative to another, joints opening up, water pooling where it used to drain. Shrinkage cracks are cosmetic. Settlement is structural movement of the ground, and it follows the timeline in this article: mostly years one through three, then it should be essentially done. If you are seeing new dropping or widening gaps after year three, that is no longer 'new construction settling' — it is a drainage or soil problem that deserves its own diagnosis. See signs your concrete is sinking for the full checklist.
With paperwork, not arguments. First, read your actual warranty document — find the section on concrete flatwork and see what it covers and for how long. Second, submit the issue in writing (email counts) before the warranty expires, with dated photos and ruler measurements of the drop. Third, if the builder's warranty rep dismisses it verbally, ask for the denial in writing with the specific warranty language cited. 'It's normal settling' is easy to say on the phone; it is much harder to put in an email next to photos of a two-inch drop. A written record also protects you if the issue continues past the warranty period — you reported it in time, and that matters.
The bulk of it happens in the first one to three years after construction, as backfill consolidates and the disturbed ground finds its final density. Year one shows the most movement; year two less; by year three a healthy lot is essentially done moving. Settlement that is still progressing after year three — or that suddenly appears years later — is usually not construction consolidation anymore. The usual late arrivals are water-related: a new irrigation leak, a regraded yard, a downspout that got buried or redirected. At that point treat it as a standard settlement problem: find the water, fix it, lift the slab. Our why concrete sinks guide covers the non-construction causes.
If the builder will fix it under warranty, take the repair — it is their responsibility and their money. But pay attention to WHAT they propose: a re-pour of a settled section is fine, but make sure they also address the compaction underneath, or you will be watching the new concrete settle the same way. If the warranty has expired or the builder refuses, hiring your own lifting contractor is usually the smart money: lifting a settled section costs a fraction of replacement (most residential lifts run $500–$3,000 — see the cost guide), takes hours instead of days, and keeps the rest of your concrete matching. Compare the options honestly in lifting vs. replacement.
Generally no for the structural warranty — lifting exterior flatwork does not affect the warranty on your foundation or framing, which are separate systems. But do two things before you hire anyone: first, read your warranty documents for any clause about owner-initiated repairs to covered items; second, get the lifting contractor's scope in writing and keep it with your warranty paperwork. And if the flatwork is still plausibly under the builder's workmanship warranty, exhaust that avenue first — paying out of pocket for something the builder owed you is the outcome to avoid. When in doubt, a short email to the builder ('I plan to have the settled driveway section lifted on [date] unless you schedule the warranty repair') creates a clean paper trail.
Almost always, no — it is the flatwork and the backfill, not the house. The soil excavated to build your foundation was put back around it as backfill, and backfill consolidates — sometimes dramatically — in the first couple of years. The porch, patio, or driveway slab sitting on that backfill drops with it, opening a gap at the foundation wall. The foundation itself sits on undisturbed soil or engineered footings below the backfill zone and is a separate system. The way to confirm: look for the structural warning signs — stair-step cracks in masonry, sticking doors and windows, diagonal drywall cracks. None of those plus a gap at the slab edge equals a flatwork problem. Our foundation vs. slab settlement guide walks through the full distinction.
Yes — it is some of the most straightforward lifting work there is. New-subdivision settlement is usually clean backfill consolidation with no mystery water source, which makes for simple void filling and predictable results. These tend to be smaller jobs (a settled sidewalk section, a porch slab, a strip of driveway along the garage), and smaller jobs are exactly where lifting's economics shine: a few hundred to around a thousand dollars versus thousands for replacement. One tip specific to new neighborhoods: check whether your neighbors are seeing the same thing. If half the street has a settled sidewalk section, that is useful context for both your builder conversation and your contractor's diagnosis — it points at the subdivision's compaction, not your lot.