Termite Treatment for New Construction: What It Costs and Why It's Worth Doing Before You Pour

By Andrea · August 2026

Pre-construction termite treatment is one of the few windows where structural wood can be protected before walls close and access disappears. For a full breakdown of methods and pricing across all scenarios, see the Termite Treatment Cost overview.

Two Layers of Pre-Construction Protection

New construction treatment typically happens in two distinct phases, each targeting a different entry point.

The first is a pre-slab soil treatment: termiticide is applied to graded soil inside the foundation footprint before concrete is poured, creating a continuous chemical zone beneath the slab — the path subterranean termites use to reach structural wood. Once the slab is down, replicating this requires drilling through concrete at regular intervals. In high-Formosan-pressure areas (Gulf Coast, Louisiana, Hawaii, coastal Florida), pre-slab treatment is especially important because it prevents secondary carton nests from forming inside wall voids — a problem that makes post-construction treatment far more complex. For details on Liquid Termite Treatment options, including soil barrier products, that page covers application and costs in depth.

The second is a borate treatment applied to framing lumber after rough framing is complete but before insulation or drywall goes up. Borate compounds penetrate bare wood and remain toxic to termites and wood-boring beetles for the life of the structure, provided the wood stays dry — making new construction the only practical window for whole-structure borate treatment. Once walls are closed, borate application on interior framing is no longer feasible. For DIY borate application options, see Diy Termite Treatment.

Together these two phases create protection that's structurally integrated rather than applied around the outside after the fact.

What Pre-Construction Treatment Costs — and What Moves the Price

Pre-slab soil treatment is priced per square foot of slab area or per linear foot of foundation perimeter, depending on the contractor and application method. The main cost drivers:

• Slab size and foundation perimeter — larger footprints require more product and more labor time
• Region and termite pressure — treatment in high-pressure states (Florida, Louisiana, Hawaii) runs higher than in low-pressure northern markets; see Drywood Termite Treatment for regional cost detail.
• Product used — non-repellent termiticides (fipronil-based) cost more than repellent formulas but are considered more effective at colony elimination; see Liquid Termite Treatment for a full product comparison.
• Whether a warranty or termite bond is included — a bond covers re-treatment if termites breach the barrier and is worth comparing across quotes

Borate framing treatment is typically priced per square foot of framing treated or per board foot of lumber. It tends to be a smaller line item than the soil barrier, but coverage matters — uncoated framing members defeat the purpose.

Before calling contractors, review Termite Treatment Cost ranges to benchmark quotes — then get at least three on-site bids from licensed applicators. Pre-construction treatment is a narrow scheduling window, so coordinate with your general contractor early so treatment isn't squeezed out by pour timing.

Building Codes and Treatment Requirements

Many states in high-termite-pressure zones — Florida, Texas, Hawaii, the Gulf Coast states — require pre-construction soil treatment by code for new residential builds. Your local building department or contractor will know what's mandatory for your jurisdiction, but even where it isn't required, skipping it in a subterranean-pressure area is a meaningful risk given how much cheaper pre-treatment is than remediation after a colony establishes in structural framing.

When it is required, the treatment typically must be performed by a licensed pest-control applicator who provides a certificate of treatment to the building inspector before the slab pour can be signed off. Keep that certificate — it may be needed for home sale disclosure or insurance purposes years later.

After Construction: What Ongoing Protection Looks Like

Pre-construction treatment isn't a permanent set-and-forget solution — soil termiticides carry a residual of roughly 5–10 years, and landscaping or irrigation near the foundation can degrade the treated zone earlier. Annual WDO inspections catch activity before it reaches structural wood; if you purchased a termite bond, re-treatment is typically covered. For how Liquid Termite Treatment fits into long-term maintenance, that page covers renewal and barrier options in depth.

For ongoing subterranean protection after construction, some homeowners in high-pressure regions add a bait monitoring program alongside their soil barrier. How that compares to liquid barrier renewal is covered in the Termite Treatment Cost guide.

No online estimate replaces an on-site review of your specific site, soil, and building plans — see the Termite Treatment Cost page for regional benchmarks before requesting quotes.