fernAEC cost intelligence
Fern / AEC cost intelligenceScenario planning, not prediction

Updated as conditions evolve

Geopolitical risk and supply-chain pulse.

The front page reads the baseline state of costs; this page watches what could change it. Leading signals an estimator should watch, long-lead items tracked against baseline, and stress-test scenarios with their assumptions shown, so you can make your own judgment.

How a shock fans out

A single event branches into channels, each channel into the cost lines it touches. The signals below track the trunk; the quarterly walks each branch to building cost.

Strait of HormuzDirect petroleumdieselasphalt binderPetrochemicalsPVC / PEXinsulationmembranesEnergy-intensive mfgaluminumcementglassFreight + insuranceswitchgearimported finishes

Signals

Energy

Materials under tariff watch

Financing

Sparklines show the trailing two years. Freight indices (Drewry WCI, FBX, Baltic Dry), ISM supplier delivery times, and the Geopolitical Risk Index are tracked editorially in the quarterly until licensed feeds are wired in.

Leading indicators

Gauges that turn before spending does: billings, planning, and sentiment read intent, not realized cost. Most sat in contraction through mid-2026, confirming the demand read on the front page even as the broad market rallied. The one exception, planning volume, is concentrated in data centers.

Last reviewed 2026-07-04
IndicatorLatestReadsSignalSource
ABI (May 2026)44.5Nonresidential spending, ~9-12 months aheadcontractionAmerican Institute of Architects
HMI (June 2026)35Single-family builder sentiment, near-term startscontractionNAHB / Wells Fargo
DMI (May 2026)+33.8% y/yNonresidential projects entering planning, ~12 months aheadexpansion (concentrated)Dodge Construction Network
Thresholds: ABI and HMI use 50 as the line between growth and contraction; the Dodge Momentum Index measures planning volume with no fixed break line. Hover an indicator for its detail. Additional panels (CBI, CICI, Confindex) are tracked editorially until sourced consistently.

Long-lead-item tracker

Published lead-time ranges, as published by the cited source. Only items with a citable public source are listed; survey and vendor data lags, so check the source dates.

Last reviewed 2026-07-04
ItemCSICurrent (wks)TrendSource
Medium-voltage switchgear2630 to 52ExtendingWood Mackenzie / VAWN / ENR-AGC
Power transformers (substation)2680 to 128ContractingWood Mackenzie / Utility Dive
Generators, large diesel standby2652 to 90StableGlobal Power Supply / DCF
HVAC equipment (incl. large chillers)2316 to 40StableTerrapin CG (ENR/AGC)
Structural steel (fabricated)0514 to 20ExtendingTerrapin CG (ENR/AGC)
Pre-2021 baseline norms are mostly undocumented in public sources and are omitted rather than estimated. Custom air handlers, VFDs, fire pumps, and imported finishes were removed in the July 2026 sourcing pass for lack of a citable source. Hover a source for the full citation.

Scenario library

Worked examples with documented parameter ranges, calibrated from historical analogs. Scenarios with published archetype impacts can be applied as a stress test in the calculator.

Strait of Hormuz closure (observed, Feb-Jun 2026)

de-escalating · geopolitical

Four transmission channels: direct petroleum, petrochemicals, energy-intensive manufacturing, container freight plus war-risk insurance. The June 17, 2026 US-Iran memorandum reopened the strait; crude retraced to roughly pre-war levels by late June while freight and insurance remain elevated. Projects bidding after the ceasefire should carry the lower halves of the archetype ranges and release the allowance if normalization holds. A renewed sustained closure of two or more quarters would roughly double the freight and direct-petroleum channels.

Affected: asphalt, diesel-intensive trades, petrochemical products, imported electrical gear, imported finishes

Sources: World Bank Data Blog, May 2026 (largest oil market shock on record) · Howden Re, Strait of Hormuz report, Mar 27 2026 · Lloyd's List, war-risk premiums, Mar 11 2026 · The National (Xeneta lane rates), Jun 3 2026 · Al Jazeera, US-Iran memorandum, Jun 18 2026

Estimated impact by archetype, % added to baseline
0%2%4%6%8%150k sf commercial office1.64.1%1 mi highway resurfacing3.56.1%200-unit garden apartment1.94.6%

Stress-test in the calculator

Red Sea / Bab al-Mandeb disruption

currently active · geopolitical

As of mid-2026, Cape of Good Hope routing remains the operating baseline for most Asia-Europe and Asia-US East Coast services (carriers re-suspended Suez transits after the February 2026 strikes on Iran), so this stress is partially embedded in current rates rather than a fresh shock on a clean baseline.

Affected: imported steel, imported finishes, imported MEP equipment

Sources: J.P. Morgan Global Research, Red Sea shipping, Feb 2024 · GEP, rerouting cost impacts, Feb 2024 · EIA Today in Energy, Feb 1 2024 (Cape transit times) · WorldCargo News, carriers divert after strikes on Iran, Mar 1 2026

North American softwood lumber escalation

currently active · trade policy

Current regime, not 14% as previously stated: most Canadian producers pay a combined 35.19% AD/CVD rate (20.56% antidumping plus 14.63% countervailing, finalized July-August 2025) plus a 10% Section 232 tariff on softwood timber and lumber since October 14, 2025, roughly 45% at the border. The stack phased in through 2025 and is largely priced into current levels (softwood PPI +4.8% y/y as of May 2026). Preliminary AR7 results (April 2026) point to the AD/CVD component falling to about 24.83% when finalized in late 2026.

Affected: residential framing, light-commercial framing, formwork

Sources: ITA final AD results, Jul 25 2025 · ITA final CVD results, Aug 8 2025 · Global Affairs Canada, softwood developments · NAHB, AR7 preliminary rates, Apr 2026

Section 232 tariffs (steel, aluminum, copper)

currently active · trade policy

Current regime: 50% on steel and aluminum since June 4, 2025 and on semi-finished copper since August 1, 2025 (refined cathode exempt); restructured effective April 6, 2026 into full-customs-value tiers of 50% for primary metal articles, 25% for derivatives above 15% metal content, and a transitional 15% for electrical-grid and industrial-base equipment (transformers, switchgear) through 2027; UK/EU and Japan/Korea preferential caps added June 8, 2026. Domestic producers raise prices in response (shadow inflation): copper and brass mill shapes PPI +42.5% y/y and aluminum +33.6% as of May 2026.

Affected: structural steel, aluminum curtainwall, storefront, electrical enclosures, wire and cable

Sources: White House copper fact sheet, Jul 30 2025 · Phillips Lytle, Apr 2026 restructuring · GHY International, Jun 2026 amendments · BIS, 407 derivative categories added, Aug 19 2025

Estimated impact by archetype, % added to baseline
0%1%2%3%4%150k sf commercial office1.63.9%1 mi highway resurfacing0.40.7%200-unit garden apartment1.12.3%

Stress-test in the calculator

Parameter assumptions and the historical analogs behind them are listed in data/curated/scenarios.json, last reviewed 2026-07-04.

The feed

Curated items relevant to construction cost. Summaries are Fern's; sources are linked. Last reviewed 2026-07-04.

  1. 2026-07-02 · freight

    Drewry's World Container Index rose 9% in the week to July 2 to $4,530 per 40-foot container (Shanghai to Rotterdam $4,682, Shanghai to New York $7,902), driven by peak-season rate increases, announced Transpacific blank sailings, and Middle East security risk that remains elevated despite the Hormuz reopening.

    Drewry World Container Index

  2. 2026-07-01 · demand

    Census C30: total construction spending fell to a $2,210.2B annual rate in May, down 1.5% year over year, and housing starts dropped to 1,177k SAAR, down 8.7% year over year and the weakest month since 2020. The contraction is concentrated, not broad: residential, office (CMBS delinquency at a record 12.34%), warehouse, and CHIPS-era factory building are shrinking while data centers, power, and transportation infrastructure run at record highs. Broad-market optimism this quarter is not a reliable read on construction demand.

    US Census Bureau (C30)

  3. 2026-06-29 · energy

    WTI settled below $70 on June 26 for the first time since the war began on February 27, and traded near $70.56 (Brent $72.91) on June 29 as Hormuz transits recovered, essentially erasing the war premium in crude.

    CNBC

  4. 2026-06-18 · geopolitical

    The US and Iran signed a memorandum of understanding ending the war: Iran agreed to reopen the Strait of Hormuz, the US lifted its naval blockade, and a 60-day clock started on a final deal. Brent fell to $77.73 on the news, about 7% above pre-war levels.

    Al Jazeera

  5. 2026-06-17 · demand

    The AIA Architecture Billings Index, which leads nonresidential construction spending by roughly a year, read 44.5 in May, below the 50 line separating growth from contraction, with every region and building sector declining and new-project inquiries turning negative. Builder sentiment (NAHB HMI) sat at 35 in June, a 14th straight month below 40, the longest such streak since 2011. The leading gauges point to further nonresidential weakness into early 2027.

    American Institute of Architects

  6. 2026-06-14 · materials

    AGC analysis of the May BLS PPI: construction input costs rose 2.6% for the month, the largest monthly jump since the pandemic era, and about 9.6% year over year, led by diesel fuel up 105.9% year over year.

    AGC via Tri-Cities Area Journal of Business

  7. 2026-06-11 · policy

    The Federal Circuit stayed the Court of International Trade's May 7 ruling that invalidated the 10% Section 122 general tariff, so the surcharge remains in collection pending appeal. Its statutory 150-day limit expires July 24, 2026 unless Congress extends it.

    McGuireWoods, Subject to Inquiry

  8. 2026-04-22 · supply_chain

    Data-center and grid demand has converted into multi-year electrical-equipment backlogs: GE Vernova reported a $163B backlog with gas turbines sold out through 2029 (Q1 2026), Siemens Energy a record EUR 154B backlog, and Hitachi Energy transformer lead times of 30 to 40 months. NERC's 2025 assessment raised its 10-year US peak-demand forecast by 224 GW, up 69% year over year, citing data centers. Because booked backlog converts to deliveries three-plus years out, long-lead electrical gear (switchgear, transformers, large generators) stays constrained through 2027-28 even if speculative load forecasts prove inflated: AEP Ohio's pipeline fell 57% once regulators required capacity payments.

    GE Vernova Q1 2026 results; NERC 2025 LTRA

  9. 2026-03-20 · energy

    Dallas Fed scenario analysis: a Strait of Hormuz closure removing close to 20% of global oil supply through Q2 2026 would put average WTI at $98 and lower global real GDP growth by an annualized 2.9 percentage points for the quarter. The scenario landed close: actual Q2 WTI averaged about $96 (Fern calculation from EIA daily data).

    Federal Reserve Bank of Dallas

  10. 2026-03-20 · energy

    After the March 18-19 missile strikes on Ras Laffan damaged LNG Trains 4 and 6 (about 17% of Qatar's export capacity), QatarEnergy said repairs will take three to five years, with force majeure declared on some long-term contracts.

    LNG Prime

  11. 2026-03-11 · insurance

    Lloyd's List: war-risk premiums for Strait of Hormuz transits were quoted at 2.5% to 5% of hull value (10%+ for US, UK, or Israel-linked ships) against 0.15% to 0.25% pre-conflict, roughly a ten-to-thirty-fold increase, or $10-14 million per transit on a large crude carrier.

    Lloyd's List

  12. 2026-02-27 · materials

    AGC commentary on the January PPI: aluminum mill shapes up 33.0% year over year, steel mill products up 20.7%, copper and brass mill shapes up 15.7%, the largest increases since early 2022. Subsequent BLS revisions put January copper and brass at about +31% (Fern calculation from current BLS data).

    AGC Data DIGest

  13. 2026-02-20 · policy

    The Supreme Court held 6-3 in Learning Resources v. Trump that IEEPA does not authorize presidential tariffs, voiding the 2025 reciprocal and trafficking tariffs while leaving Section 232 metals tariffs and Section 301 China tariffs intact. The administration replaced the voided duties with a 10% surcharge under Section 122, effective February 24, which lapses after 150 days unless Congress extends it.

    Miller & Chevalier