The Utility System Nobody Underwrote

The three scenarios that open this note are illustrative composites. They are drawn from recurring diligence patterns, not from one documented park, and no park or seller is identified.

A buyer closes on a park marketed with public water and sewer. Six months later, the county informs him the wastewater plant is private, its permit lapsed two owners ago, and compliance will cost more than the down payment. The offering memorandum was not lying about the pipes. It was just wrong about what they were.

An inspector walks a 1970s park and finds the electrical pedestals are original to the build. The system functions, in the sense that nothing is on fire. Then a holiday weekend fills every site, every air conditioner runs at once, and the park learns the difference between functioning and adequate.

A seller tells a buyer the septic has never been a problem. The county has no record of the system at all. No permit, no inspection history, no file. It has never been a problem in the same way an uninspected bridge has never been a problem.

The scenarios above are illustrative composites; the pattern is the point. In our judgment, the pipes and wires get less verification attention than the rent roll and the P&L, even though every dollar in the underwriting flows through them. That is a judgment from reading these files, not a measured frequency, and it is labeled as one.

Functional is not permitted, and permitted is not adequate

Utility diligence asks three separate questions, and the package usually answers none of them.

Condition: what is the physical state of the system. Age, materials, maintenance history, visible deferred work.

Capacity: whether the system can serve the park as operated and as planned. A water system that serves 80 sites cannot be assumed to serve 120, and a lagoon at the edge of its rated load has no room for the expansion the model prices in.

Compliance: whether the system is permitted, inspected, and in good standing with every authority that governs it. A functioning system without a permit is a liability wearing a disguise.

Every utility system gets three questions (the CrosstownOS Utility Capacity Risk Triage):

• Condition: what state is the system actually in, not what the package says about it.
• Capacity: does the permitted capacity cover the sites the park runs today and the sites the price assumes tomorrow.
• Compliance: is the system inside its permits and its rules, with the paper to prove it.

A utility can pass any two of these and fail the third catastrophically. The park with new pipes and no permit. The permitted plant at 98 percent capacity. The adequate, compliant system with forty years of deferred maintenance inside the walls. The broker package says "city water and sewer" and moves on. The buyer cannot.

The evidence, system by system

"Municipal" and "private" are different diligence files, not different words for the same pipes. For each system, name the approval that should exist, who issues it, the unit capacity is measured in, and the document that proves it.

The verification path

Start with the bills. Twelve to twenty-four months of utility records, meter readings, and reimbursement histories show what the system actually moved and what it actually cost. Then the permits: the files with the city, the county, and the state that say the system exists legally and is in good standing. Then capacity: the letter or the engineering basis that says the system can carry the park, not just today but at the occupancy the model assumes.

The verification path: twelve to twenty-four months of utility bills first, then the permits behind them, then a capacity letter from the authority or the engineer. Bills show behavior, permits show permission, and the letter is where the two have to agree.

Run the claim through the six labels. "Public water and sewer" in the memorandum is broker-reported until the permit file says otherwise. The capacity letter, reviewed by a human, is verified. The missing inspection history is missing evidence, and it stays missing evidence until someone produces it. The assumption that the system can support the expansion plan is an underwriting assumption, and it should be labeled as one before it enters the model.

Editor's note (2026-10-05): this note was written when the public language used four evidence states. The ParkProof Standard now uses six: Verified, Broker-reported, Missing evidence, Underwriting assumption, Calculated, and Unresolved.

What it costs to skip

Financial surprises negotiate. A rent roll gap becomes a retrade. Infrastructure surprises do not. A failed wastewater plant does not accept a lower offer; it sends a compliance order with a deadline. Deferred maintenance discovered after closing becomes emergency maintenance, performed at emergency prices, usually during peak season, usually with a full park watching.

This is also where the record outlives the deal. The utility file a buyer builds during diligence, permits, capacity, condition, maintenance history, becomes the operating baseline on day one of ownership. The truth established before the purchase is the same truth the manager needs after it. Build the record once, and it serves the whole life of the asset.

A utility system priced in diligence is a capital plan. The same system priced after closing is an emergency with your name on it.

Next in Field Notes: the rest of the file, one verification at a time.

Sources and Limits

This note is grounded in the evidence discipline defined in the ParkProof Standard, in the Acquisition Signal research program, and in operator community research, anonymized so no park, operator, or seller is identified. The opening scenarios are illustrative composites, labeled as such where they appear.

External sources opened for this note:

• City of Houston, Wastewater Capacity Reservation Letter: documents that a capacity letter is a real instrument, what it determines (adequate and available water and wastewater capacity, the point of connection, and whether impact fees are due), and the situations it is applied for in, including new development, additions to an existing development, and increased occupancy.
• Florida Administrative Code, Rule 62-600.405, in Chapter 62-600: requires wastewater permittees to compare flows with permitted capacity and to submit a capacity analysis report when the trigger in the rule is met.
• Florida Administrative Code, Rule 62-555.525: the capacity demonstration for covered public water systems, cited in the table above.
• Angi, septic inspection cost data, 2026: published residential septic inspection pricing of $100 to $1,300, with an average of $550 and a detailed inspection at $400 to $700. That is a single home benchmark only.

Limits on cost: no published price list prices park scale wastewater plant work. Inspections are priced services and can be quoted before diligence starts. Plant repair, expansion, and compliance work is custom quoted after an engineer looks at the system, so this note gives no figure for it rather than borrow a residential number and present it as a park number.

Put it to work: run the Utility Capacity Risk Triage on your park's systems, or start with the free RV park due diligence checklist. When the deal gets real, the Acquisition Workspace carries the full record.

This note may use AI-assisted research and drafting. Sources, claims, and final editorial judgment remain subject to human review.