If the sod on your brand-new home looked great at closing and is dying three months later, it’s almost never your fault. The problem is usually what’s underneath it. Builders lay sod at the end of a project, on ground that heavy equipment has spent months packing down, often over imported fill and leftover debris. You can water perfectly and still lose that lawn.
The good news: this is fixable, and part of the fix may be your builder’s job. This guide walks you through what’s likely under your sod, a 5-minute way to diagnose it, what your builder is (and isn’t) required to do under Florida law, and how to repair or rebuild the lawn so it lasts.
Already know the problem started after installation, like overwatering or bugs? Start with our guide to why new sod dies instead.
What’s Actually Under Builder Sod in Palm Beach County
UF/IFAS researchers put it bluntly: residential construction can drastically change a soil’s physical, chemical and biological properties (UF/IFAS SL322). On a typical new lot here, four problems tend to stack up.
1. Compaction. Months of trucks, loaders and pallets crush the air spaces roots need. UF/IFAS notes that construction compaction can reach more than 12 inches deep, and that compacted soil holds less water, drains poorly and blocks root growth (UF/IFAS LH012). Sod roots hit that layer and stop, so the grass lives off a few inches of soil and fries in the first dry week.
2. Imported fill. Many new subdivisions are raised with trucked-in fill so the house pads sit above flood level. Fill varies load to load. Some is clean sand; some carries limerock, shell or subsoil with little organic matter. South Florida fill is often alkaline, and in alkaline soil iron, manganese and zinc become hard for grass to use, which shows up as yellowing that fertilizer doesn’t fix (UF/IFAS SL322). More on that in our guide to fixing lawn pH in Florida.
3. Buried debris. Concrete washout, block, rebar ties, stucco and wood scraps sometimes get raked flat and sodded over. Grass over a buried slab or concrete puddle dies in a shape that matches it.
4. Grading and drainage. Final grading is often rushed. Low spots hold water and rot roots; high spots and slopes shed water and dry out. Water that runs toward the house is a separate, bigger problem, covered in the builder section below.
A thin, rushed installation on top of all that (sod laid on unprepared ground, gaps at the seams, irrigation zones never adjusted) finishes the job.
The 5-Minute Diagnosis: Is It the Soil or the Sod?
You need a long screwdriver or a thin steel rod, a shovel, your phone camera and a garden hose. Do this a day after a good watering, in both a dying spot and a healthy one, so you can compare.
- The probe test. Push the rod straight down by hand. UF/IFAS’s rule of thumb: if a rod under 1 inch thick won’t go at least 6 inches into moist soil, compaction is likely limiting your grass (UF/IFAS LH012). If it stops dead at the same depth in several places, you may have hit buried concrete or rock.
- The tug test. Grab a handful of sod at the edge of a dying patch and pull. Sod that lifts like a carpet with short, stubby roots never knitted into the ground below. (Roots that are chewed off point to grubs; see our grub guide.)
- The shovel slice. Dig a hole about 8 inches deep and look at the side wall. Healthy ground is fairly even all the way down. Warning signs: a hard, pale layer a few inches down; gray or white rock and shell; chunks of concrete, block or stucco; or a sharp line where a thin layer of topsoil sits on packed fill.
- The fizz test. Drop a little household vinegar on a dry sample from that hole. Fizzing means free carbonate (limerock, shell or concrete residue), which signals alkaline soil that will lock up iron.
- The hose test. Run the hose slowly in one spot for 10 minutes. Water that sheets off or puddles instead of soaking in confirms compaction or a hard layer. Then watch where runoff goes after the next storm, especially near the house.
- The photo log. Photograph every hole, puddle and dead patch with a tape measure in frame. You’ll want this if you go back to the builder.
| What you found | Most likely cause | Where to go next |
|---|---|---|
| Rod stops at 2–4 inches across the yard | Compacted fill | Repair or rebuild (below) |
| Rod stops dead in one area; grass dying in a shape | Buried concrete or debris | Dig it out; document for builder |
| Sod lifts easily, roots stubby, soil looks fine | Poor installation or watering | Why new sod dies |
| Vinegar fizzes; grass yellow with green veins | Alkaline fill locking up iron | Soil test, then pH guide |
| Standing water or water flowing toward the house | Grading defect | Builder (next section) |
Getting Your Builder to Fix It
Dead sod by itself is usually treated as a landscaping issue, which builder warranties often limit. Bad grading is different: it can be a building code problem, and that gives you real leverage. Here’s how the pieces fit. We’re lawn people, not lawyers. Treat this as background and talk to a Florida construction attorney before relying on any of it.
Read your builder’s warranty first. Your purchase contract and warranty booklet decide what’s covered for sod, irrigation and grading, and for how long. Some limit landscaping to the closing walkthrough or a short window after it. Find the exact wording and any deadline for reporting.
Florida’s one-year statutory warranty. Since July 1, 2025, Florida requires builders of new single-family homes (and duplexes to quadruplexes) to warrant them for one year against construction defects that result in a material violation of the Florida Building Code (s. 553.837, Fla. Stat.; summary by Shutts & Bowen). The year runs from the earlier of closing or move-in, and it transfers to a new owner within that year (Carlton Fields). The law doesn’t mention sod or landscaping, so dead grass alone probably isn’t covered. A grading defect that sends water toward your foundation may be a different story.
The grading rule that matters. The Florida Building Code requires the ground to fall at least 6 inches within the first 10 feet away from the foundation. Where lot lines make that impossible, drains or swales have to carry water away instead (FBC Residential R401.3, 2023; plain-language summary, InterNACHI). If your hose test showed water running back toward the house, measure the fall and photograph it.
The Chapter 558 process. Before a homeowner can sue over a construction defect in Florida, Chapter 558 requires written notice to the builder at least 60 days before filing. The notice must describe each defect and its location in reasonable detail. For claims involving 20 or fewer homes, the builder can inspect within 30 days and must respond in writing within 45 days with an offer to repair, an offer to pay, or a dispute (s. 558.004, Fla. Stat. (2025)).
A practical order of operations:
- At the walkthrough, walk the lawn as carefully as the house. Note dead sod, gaps, puddles and debris on the punch list.
- After closing, run the diagnosis above within the first few weeks, while warranty clocks are fresh.
- Report problems in writing through the builder’s warranty portal or by email, with photos and measurements. Keep copies.
- Ask specifically about grading if water moves toward the house, and cite R401.3.
- If the builder won’t act on a code-related defect, talk to an attorney about a Chapter 558 notice before the warranty window closes.
If you’re in an HOA, check whether the association has its own sod standards or replacement deadlines too. Our guide to HOA re-sod letters covers that side.
Fixing It: Repair or Rebuild?
The rule of thumb is simple: if the problem is under the sod, laying more sod on top just buys you another few months. Match the fix to what the diagnosis found.
| Situation | Fix | Why |
|---|---|---|
| Scattered dead patches; rod goes 6+ inches in most places | Repair: core aerate, topdress, patch with matching sod, fix irrigation coverage | The base is usable; the patches are local |
| Rod stops at 2–4 inches across most of the yard | Rebuild: strip, relieve compaction, amend, resod | Roots can’t get past the hard layer anywhere |
| Buried concrete or debris in one area | Spot rebuild: cut out sod, dig out debris, backfill with good soil, resod | Grass can’t root over debris, period |
| Low spots, ponding, or water toward the house | Regrade first, then resod the disturbed area | Drainage problems outlast any sod |
The repair route
- Core aerate to pull plugs and open channels for air and water. UF/IFAS notes plug aeration can improve drainage with minimal disturbance to established turf (UF/IFAS SL322). Our core vs. liquid aeration comparison explains why core aeration is the one that matters here.
- Topdress with a thin layer of screened compost or a sand-compost mix so it falls into the holes.
- Patch dead areas with fresh sod of the same variety, cut cleanly to fit.
- Audit the irrigation. Builder systems are often set and forgotten. Set out a few flat cans, run each zone, and fix heads that miss or overlap. See our South Florida watering guide.
The rebuild route
This is the same sequence UF/IFAS recommends before planting any Florida lawn (UF/IFAS LH012):
- Strip the failed sod and remove all construction debris, rock and roots.
- Get a soil test before you amend, so you know the pH and what you’re working with. Our soil testing service can handle this, or use the UF/IFAS lab.
- Break up compaction by tilling 6 to 8 inches deep.
- Grade so the yard slopes about 1% to 2% away from the house, and meets the 6-inches-in-10-feet rule next to the foundation.
- Amend with well-decomposed organic matter, typically 3 to 6 cubic yards per 1,000 square feet mixed into the top 6 inches, and no more than 6.5 cubic yards.
- Fix irrigation before the new sod goes down, not after.
- Resod with a variety suited to your sun and soil. Our grass type guide helps you choose.
A rebuild costs more up front, but it’s a one-time cost. For current prices, see what sod installation costs in South Florida. If you’d rather hand it off, this is exactly what our removal and soil prep service does.
The First 90 Days on New Sod
Whether it’s the builder’s sod or a fresh rebuild, the first three months decide whether it roots. These are the rules that matter most on new-construction ground.
- No nitrogen or phosphorus for 30 days. Palm Beach County’s ordinance bans fertilizer containing nitrogen or phosphorus before sodding and for the first 30 days after (PBC Code, s. 11-406(b)). Some cities add a summer blackout on top; see which rules apply in your city.
- Water to root, then back off. Frequent light watering early, tapering to deep and infrequent as roots grip. Our new sod watering schedule has the week-by-week version; on compacted fill, watch for puddling and cut back sooner.
- Check rooting before you mow. Use the tug test. See how long sod takes to root and when to mow new sod.
- Keep traffic off. Movers, contractors and pool crews compact the soil all over again. See when you can walk on new sod.
- Watch the seams and edges. Gaps along driveways and sidewalks dry out first. Fill them with soil so the edges don’t shrink.
- Scout for pests. New sod is a magnet for webworms and grubs. Our new sod insecticide guide covers what to use and when.
FAQ
Is dead builder sod covered by my warranty? It depends on your builder’s written warranty, so read it first. Florida’s one-year statutory warranty covers defects that cause a material building code violation; it doesn’t mention landscaping. Grading that sends water toward the house is the more likely route to a covered repair.
Can I just lay new sod over the dead sod? No. New sod over dead sod and compacted fill fails the same way. At minimum, remove the dead sod and relieve compaction; see whether you need to remove old grass first.
Will fertilizer bring it back? Not if the roots can’t get into the soil, and it’s prohibited for the first 30 days after sodding in Palm Beach County. Fix the ground first.
My neighbors’ lawns are dying too. Does that matter? Yes. A pattern across a subdivision points to the site work, not your care. Photograph neighboring lawns (from the street) and mention it in writing when you contact the builder.
How soon should I act? As early as possible. Warranty windows are short, the statutory warranty runs one year from closing or move-in, and summer heat kills shallow-rooted sod quickly.
Rather Have Someone Look at It?
We rebuild new-construction lawns across Palm Beach County, from Jupiter to Boca Raton. Text us photos of your lawn and one of your shovel holes, and we’ll tell you whether it’s a repair, a rebuild, or a call to your builder. Call or text 561-941-GROW, or see our removal and soil prep service.
Sources
- UF/IFAS Extension, SL322: Preplant Soil Assessment for New Residential Landscapes in Florida (Shober et al., rev. April 2025)
- UF/IFAS Extension, ENH 02/LH012: Preparing to Plant a Florida Lawn (Trenholm, Shober and Bean, rev. Nov. 2024)
- 2023 Florida Building Code, Residential, 8th Ed., R401.3 Drainage
- InterNACHI, Foundation Fundamentals: Inspecting Load Paths and Water Paths
- Florida Statutes, Chapter 558, incl. s. 558.004 (2025)
- Shutts & Bowen, Florida’s New Statutory Home Warranty (s. 553.837, Fla. Stat.)
- Carlton Fields, Florida’s New Home Warranty Law Takes Effect July 1
- Palm Beach County, Florida-Friendly Fertilizer Use Ordinance (Code Ch. 11, Art. XVI)
Rather have a pro handle it?
Floridist installs sod and treats lawns across Palm Beach County. Get a free quote in about 30 seconds, or call or text 561-941-GROW.