Industry Trends · via NAHB

Building Material Price Trends in 2026 and What They Mean for Charleston Construction Budgets

Anyone budgeting a custom build or major renovation in Charleston this year needs to look past headline "lumber prices" talk — the real cost pressure in 2026 is coming from a different corner of the materials list, and it's worth understanding before you lock in a construction contract.

What the Data Shows

NAHB's tracking of residential construction input prices shows overall material costs up 3.5% year-over-year as of late 2025 — the largest annual increase since early 2023. The surprise is where that pressure is concentrated: metal products, with metal molding and trim up nearly 50% year-over-year. Meanwhile, softwood lumber sits below year-ago levels and ready-mix concrete has actually softened. This is a very different cost picture than the lumber-driven spikes builders dealt with a few years ago.

Why This Matters for Charleston Builds

Metal is everywhere in a coastal Charleston build — impact-rated window and door framing, structural connectors and hurricane straps required by our wind-load codes, roofing, and railing systems on elevated and waterfront homes. A near-50% swing in metal trim and molding costs hits Lowcountry construction budgets harder than it would a comparable build in a non-coastal market with lighter structural requirements.

What This Means If You're Budgeting a Build

Get metal-heavy line items — structural hardware, railings, impact windows, roofing — priced and locked as early as possible in your contract, since these are the categories showing the sharpest upward movement. On the flip side, don't over-allow for lumber costs based on outdated assumptions; that line item has actually given some budget relief back. A good cost-plus contract with a builder who prices materials close to purchase date, rather than at initial bid, protects you better in a market moving unevenly like this one.

Source: National Association of Home Builders, "Building Material Price Growth," January 2026. via NAHB

Budgeting a custom build in Charleston? Contact Chris Eller directly for a realistic construction cost assessment before you sign a contract.