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construction-costs-update-august-2025
Wednesday, 24 September 2025 / Published in Base4

Construction Costs Update: August 2025 at a Glance

Reading Time: 3 minutes

Your project budget is at risk — here’s why.

The latest data shows mixed signals in steel, concrete, and lumber. Developers who act now can lock in savings others will miss.

Let’s Talk Project Costs

 

Lumber Composite: Eased slightly this summer, but remains higher than August 2024, showing lumber costs are stabilizing rather than falling.

Lumber and plywood prices, August 2025 construction cost update

Steel-Mill Products: Steel prices ticked up again in August 2025, keeping pressure on project budgets.

Steel-mill products cost trend, August 2025

Ready-Mix Concrete: Nearly unchanged from August 2024, showing stability over the year but offering no cost relief.

Ready-mix concrete price index, August 2025

Copper Wire & Cable: Down from a mid-2025 peak, but still about +13% YoY, leaving electrical inputs costly despite the recent dip.

Copper wire and cable costs, August 2025 update

Switchgear: Climbed steadily all year, reaching new highs in August 2025 and continuing to challenge schedules and budgets.

Switchgear costs trending higher in August 2025

Gypsum Products: Slow, steady rise across the past 12 months, adding incremental cost pressure to wall and finish packages.

Gypsum products construction cost trend, August 2025

Plumbing Fixtures & Fittings: Up roughly 8% YoY, plumbing components continue to trend higher, increasing MEP package costs.

Plumbing fixtures and fittings price index, August 2025

Insulation Materials: Steady vs. 2024 levels, providing predictability for budgets.

Insulation materials cost stability, August 2025

Why it matters

Budgets are moving targets. Lenders and GCs are repricing faster, and late value engineering (VE) costs time you don’t have.

What to do this week

  • Pick the right frame (CFS vs. steel vs. wood) for local supply and lead times.

  • Phase procurement on volatile packages (steel, electrical gear) with early shop drawings.

  • Swap specifications to equal-performance alternates where pricing or lead times are better.

  • Run a 48-hour VE pass with BASE4 to quantify cost and schedule impacts before you lock a GMP.

How BASE4 Helps

We design smarter from Day 1 so your projects:

  • Cut waste through coordinated design sets

  • Optimize specifications to meet brand + budget

  • Use prefabrication and modular strategies to save time and cost

Our global team, with U.S. presence coast-to-coast, delivers architecture, engineering, and interior design with one goal: helping you build cheaper and faster.

Build Cheaper & Faster

 

Thank you,

Blair Hildahl
BASE4 Principal
608.304.5228
BlairH@base-4.com

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