Buying an LP stake in an infrastructure fund is a different diligence exercise from underwriting the assets inside it. Here's how fund-level and asset-level diligence differ, what belongs in each data room, and why GP-led deals need both at once.
Infrastructure secondaries have grown from a niche liquidity fix into a core allocation strategy. Long fund lives (12-15 years, often with extensions), denominator-effect pressure on LPs, and a wave of GP-led continuation vehicles for core-plus assets have all pushed volume up, and pulled more buyers into processes they may not have run before.
Here's the thing that trips up newcomers: "infrastructure secondaries due diligence" is really two different exercises wearing one name.
The information you need, the data room you should expect, and the questions you ask differ sharply. Let's take them in turn.
In an LP-led secondary, an existing LP sells its stake (or a portfolio of stakes) to a secondary buyer. You step into the seller's shoes: same rights, same obligations, same GP relationship.
1. The portfolio, at arm's length. You typically get quarterly reports, capital account statements, and the GP's valuations, not direct access to the assets. Your job is to triangulate: are the marks reasonable against public comps, recent transactions in the fund, and your own top-down views on each asset's sector?
2. The GP. Track record across vintages, team stability, alignment (GP commitment size, carry structure), and how they behaved in past downturns. In infrastructure specifically: have they actually delivered capex programs on budget, and how did their availability-based assets perform through inflation spikes?
3. The fund terms you're inheriting. This is where secondaries buyers earn their keep:
4. Tax and structure. Blocker entities, ECI/UBTI exposure for US buyers, treaty positions for cross-border assets, and transfer taxes triggered by the assignment itself.
Expect a lean room, often run by the seller's adviser:
1.0 Fund Documents (LPA, amendments, side letters, subscription docs)
2.0 Financial Reporting (quarterly reports, audited fund financials, capital account statements)
3.0 Portfolio Information (asset summaries, valuation memos if the GP permits)
4.0 Transfer Mechanics (transfer agreement drafts, GP consent correspondence)
5.0 Tax (fund structure charts, K-1s or equivalents, tax memos)
Sellers of single LP stakes often run this on a lightweight platform; a $30M stake sale doesn't justify enterprise VDR fees. Subscription-priced rooms like Papermark handle the document volume fine. Portfolio sales of many stakes across funds, with dozens of buyers in a mosaic process, push toward mid-market platforms like iDeals with proper Q&A tooling.
The information gap is the defining feature. You will not get asset-level data rooms in a pure LP trade. Your mitigants are the GP's reporting quality, your own sector knowledge, and price. This is why LP-led infrastructure trades at discounts (or premia) to NAV that mostly reflect information confidence, not just cash flow math.
In a GP-led secondary, a continuation vehicle, a strip sale, a single-asset CV for a prized regulated utility stake, the GP is on both sides of the trade. New money re-underwrites the assets; existing LPs choose to sell or roll.
Because the GP controls the assets, the information environment flips: buyers can and should demand near-M&A-grade disclosure.
You diligence the asset like a direct buyer. For each asset in the CV:
If that list looks familiar, it should: it's a compressed version of primary project finance diligence. Our project finance due diligence checklist covers the full asset-level document set, and most of it applies directly to single-asset continuation vehicles.
You also diligence the conflict. The GP set the price at which it sells to itself. Buyers and rolling LPs should look for:
And the new vehicle's terms. The CV's LPA is a fresh negotiation: fees on invested vs committed capital, tiered carry with re-set hurdles, term length matched to the asset's actual life.
This is a two-tier structure, and running it well is a real skill:
Tier 1: Fund/Transaction level
├── CV term sheet and draft LPA
├── Process letters, fairness opinion
├── Existing fund LPA and LPAC materials
├── Election materials for rolling LPs
Tier 2: Asset level (per asset)
├── Full asset diligence set (contracts, financials, technical, regulatory)
├── Vendor due diligence reports
├── Asset-level Q&A
Access is staged: lead investors get Tier 2 early and deep; syndicate participants may get vendor DD reports and a lighter Q&A window; rolling LPs get election materials plus defined asset disclosure. That's three concurrent audiences with different permissions and separate Q&A threads, exactly the workload profile described in our guide to the best data room for infrastructure and project finance. Single-asset CVs on core infrastructure routinely run on Datasite or Intralinks precisely because lender-style adviser teams (buyers bring technical and insurance advisers to big CVs) expect that environment.
| Dimension | LP-led (fund level) | GP-led (asset level) |
|---|---|---|
| What you buy | Existing LP interest | Interest in a new vehicle holding known assets |
| Information access | GP reporting, no asset rooms | Near-M&A disclosure, vendor DD reports |
| Diligence duration | 3-8 weeks | 8-16 weeks |
| Adviser lineup | Counsel, tax | Counsel, tax, plus technical/market/insurance advisers |
| Q&A volume | 30-100 questions | 200-600 questions |
| Key risk | Information asymmetry, stale marks | Conflict of interest, priced-to-perfection assets |
| Typical discount/premium driver | Confidence in GP marks | Underwritten asset case vs CV price |
| Data room cost profile | Light: subscription platform | Heavy: enterprise platform, multi-month |
Long-dated cash flows punish small assumption errors. A 25-year concession model is exquisitely sensitive to inflation indexation mechanics and terminal assumptions. At fund level, ask how the GP's discount rates moved with rates; at asset level, rebuild the indexation clause from the actual contract, not the model's summary tab.
Regulatory reset risk hides between diligence and close. For regulated utilities, know exactly where the asset sits in its regulatory cycle. A determination landing between signing and close can move value materially; price protection or MAC language should reflect it.
Unfunded commitments are real money. Infrastructure funds hold assets through capex programs. An LP stake with 30% unfunded is a leveraged bet on the GP's future deployment; underwrite the pipeline, not just the portfolio.
FDI and change-of-control regimes bite at the fund level too. Transfers of interests in vehicles holding critical infrastructure (ports, grids, telecoms) can trigger national security screening even for minority LP trades. Check early; approval timelines of 3-6 months can dominate your deal calendar.
Match the room to the deal, not to habit:
Buyers running repeated secondaries programs should also look at how PE firms structure their standing diligence environments; our guide to the best data room for PE due diligence covers the fund-buyer side of that tooling.
Treat LP-led and GP-led infrastructure secondaries as different disciplines. Fund-level diligence is a study of documents, terms, and the GP's credibility, run lean and priced for information risk. Asset-level diligence is project finance underwriting compressed into a secondary wrapper, with a conflict-of-interest review bolted on. Staff, budget, and structure your data room for the one you're actually doing, and be suspicious of any GP-led process whose disclosure looks like an LP-led one.
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