Legence Corp. Class A Common stock (LGN) | The Buildout — AI Infrastructure
The Verdict
Legence engineers, builds, and maintains the heating, cooling, and plumbing systems for large, technically demanding buildings. In the AI buildout, its custom-fabricated modular liquid cooling systems deliver cooling to high-density GPU clusters. The company combines engineering, off-site fabrication, on-site installation, and ongoing maintenance under one roof, helping hyperscale clients deploy data center capacity faster.
| Market Cap | — |
| Revenue (TTM) | $3.1B |
| EBITDA Margin (TTM) | 7.5% |
| Net Debt | $933M |
| Earnings Beats | 2 of 3 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Backlog of $5.4B provides multi-year revenue visibility, with orders extending to Q4 2028.
- Fabrication-only revenue (mostly DLC cooling) reached low-20s% of I&M, up from mid-teens, driving margin expansion.
- Cash generation improved dramatically, with free cash flow conversion at 85% of adjusted EBITDA in Q1.
- Rapid labor scaling: added more than 1,000 skilled craftspeople in a few months, with management not seeing labor as a material constraint.
- Net leverage fell to 1.8x from 2.9x nine months ago, creating financial optionality.
What We’re Watching
- Customer concentration: one I&M customer now 17.5% of revenue; a pullback would materially impact results.
- Book-to-bill slipped to 1.2x from 1.9x; needs to stay above 1.0x to sustain growth, though two-quarter average is 1.5x.
- E&C margin reset: gross margin fell to 33.2% from 40.7% due to mix shift; further erosion could pressure consolidated profitability.
- Integration risk from Bowers acquisition, though currently exceeding expectations.
The operating performance is strengthening across nearly every metric: backlog, margins, cash flow, and balance sheet. The one caution is rising dependence on a single customer, which could undermine the case if that relationship weakens.
Earnings Beat
Revenue more than doubled to $1.038 billion, adjusted EBITDA rose 132% to $118 million, and adjusted gross margin contracted to 18.7% as the mix shifted toward lower-margin installation work.
| Metric | Q1 FY2026 | Q4 FY2025 | Q1 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $1.0B | $738M | $506M | +105.1% |
| Gross margin | 14.4% | 20.0% | 22.1% | -770bps |
| EBITDA | $70M | $37M | $46M | +54.1% |
| EPS | $0.27 | $-0.55 | $-0.36 | −174.5% |
| Book-to-bill | 1.2x | 1.9x | n/a | — |
Revenues more than doubled year‑over‑year to just over $1 billion. Now to put that into perspective, Legence generated $1.2 billion of revenue for all of 2022.— Jeffrey Sprau, CEO, 14 May 2026
Management tone: Management was confident and candid, providing direct answers on book-to-bill lumpiness, E&C margin shift, and cash flow cadence without defensive language.
Management Guidance
Management raised full-year 2026 guidance for the second time in seven weeks, now expecting revenue of $4.1–$4.3 billion and adjusted EBITDA of $470–$490 million. Q2 2026 was guided to $1.05–$1.1 billion in revenue and $115–$125 million in adjusted EBITDA. The guidance assumes continued strong data center demand and no material labor constraints.
Trajectory
Revenue has more than doubled year over year, with the I&M segment surging 142% on the back of data center cooling installations and the Bowers acquisition. While consolidated gross margin has compressed due to the faster growth of lower-margin installation work, I&M's segment margins improved, aided by rising fabrication-only mix. Adjusted EBITDA margin expanded to 11.4% as SG&A leverage kicked in, and free cash flow improved to over $100 million.
The Model
The model projects revenue of $4.35 billion and EBITDA of $483 million (11.1% margin) for FY+1, rising to $5.50 billion in revenue and $649 million in EBITDA (11.8% margin) in FY+2. The near-term forecast is anchored by the $5.4 billion backlog, while the FY+2 step-up reflects sustained data center demand and further fabrication mix shift.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $2.6B | $4.3B | $5.5B |
| YoY Growth | — | +70.6% | +26.4% |
| EBITDA | $207M | $483M | $649M |
| EBITDA Margin | 8.1% | 11.1% | 11.8% |
Projections are the median of 5 independent model runs. The model’s revenue sits 12.0% above analyst consensus.
Management raised full-year 2026 guidance for the second time in seven weeks, now expecting revenue of $4.1–$4.3 billion and adjusted EBITDA of $470–$490 million. Q2 2026 was guided to $1.05–$1.1 billion in revenue and $115–$125 million in adjusted EBITDA. The guidance assumes continued strong data center demand and no material labor constraints.
What Could Go Right — and Wrong
- Revenue from data center end markets grows faster than modeled as AI capex accelerates and hyperscalers outsource more MEP work.
- Fabrication-only share climbs into the high-20s% of I&M or beyond, lifting segment margins and overall profitability.
- A large pharmaceutical or semiconductor fabrication contract validates the modular cooling platform for new verticals.
- E&C margins recover to the high-30s% as sustainability consulting rebounds and data center cross-selling gains traction.
- Transformative M&A adds scale or new capability while leverage remains manageable.
- The large I&M customer reduces capex or switches vendors, causing a sharp revenue shortfall.
- A broad pullback in data center capex, triggered by macro slowdown or AI investment pause, leads to backlog cancellations and fabrication overcapacity.
- Cost overruns on large fixed-price projects compress margins and damage customer relationships.
- Labor constraints materialize if competitors catch up in hiring or skilled craftspeople become scarce, capping growth.
Looking Ahead
Over the next twelve months, the company will demonstrate whether the staggering Q1 growth pace can be sustained. Key milestones include Q2 and full-year 2026 results, further backlog growth, and any early signs of new vertical fabrication orders. Post-quarter credit upgrades and loan repricings will also reduce interest costs, adding to the earnings tailwind.
- Q2 2026 (August 2026)Q2 2026 Earnings — Tests revenue of $1.05–$1.1B and EBITDA of $115–$125M.
- H2 2026Backlog Growth — Management expects total backlog to continue growing as the year progresses.
- 2H 2026New Vertical Orders — Potential first pharma or semiconductor fabrication contract.
- 2026Bowers Integration Milestones — Expects cross-selling wins and integration efficiencies.
- 2027Fabrication Capacity Decision — If demand warrants, further expansion of fabrication footprint.
- 2027Customer Diversification — Whether concentration with the 17.5% customer stabilizes or broadens.
Financials
Annual Summary
| Metric | FY2025 | TTM |
|---|---|---|
| Revenue | $2.6B | $3.1B |
| Gross Margin | 21.1% | 18.6% |
| EBITDA | $207M | $368M |
| EBITDA Margin | 8.1% | 7.5% |
| Net Income | −$60M | −$22M |
| Free Cash Flow | $219M | $295M |
| Net Cash | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)18.6%
- EBITDA Margin (TTM)7.5%
- Net Margin (TTM)-0.7%
- ROIC6.0%
- FCF Conversion128.2%
- SBC / Revenue3.5%
The Company
Legence provides engineering, installation, and maintenance services for the mechanical, electrical, and plumbing systems of technically demanding buildings—data centers, life sciences labs, hospitals, and large educational facilities. Its direct-liquid-to-chip cooling systems are custom-fabricated modular units that remove heat from high-density AI accelerator clusters, supporting the high power densities required by modern AI data centers.
The company operates through two segments: Engineering & Consulting (E&C) designs systems and manages programs; Installation & Maintenance (I&M) fabricates components, installs them on-site, and provides ongoing service. Legence now has over 1.3 million square feet of fabrication capacity across six locations, including an ISO Class 7 cleanroom, and more than 7,400 skilled craftspeople. Two recent acquisitions—Bowers Group in Northern Virginia and Metrix near Seattle—added scale and geographic density.
Business Segments
Competitive Landscape
Legence competes in installation and maintenance against Comfort Systems USA (FIX) and ACCO Engineered Systems, and in engineering against Stantec (STN) and WSP Global. The market is described as supply-constrained with demand far exceeding available labor; Legence’s ability to add craftspeople while competitors cite labor as their primary bottleneck suggests it may be gaining share.
- Comfort Systems USA (FIX)Direct I&M competitor; also expanding modular fabrication (4M sq ft target by end-2026). Management noted FIX is turning away work due to labor limits.
- Stantec (STN)E&C competitor with a $35B+ data-center design pipeline and work for 5 hyperscalers on 2.5 GW of capacity.
- ACCO Engineered SystemsNamed in filings as I&M competitor; not discussed.
- Southland Industries (SLND)Named in filings as I&M competitor; not discussed.
- WSP GlobalNamed in filings as E&C competitor; not discussed.
Supply Chain
Legence sits between large building equipment suppliers and hyperscale data center operators, providing design, fabrication, and installation of cooling and MEP systems. The 10-K states it is not overly dependent on any single supplier.