Most “utility billing software” was built for apartments. Manufactured housing — what most searchers call mobile home parks — borrows those tools at its peril, because in California the two property types answer to different law. This guide covers what the software category actually does, what makes manufactured housing different, and the questions that expose whether a vendor's “compliance” is a product or a promise.
What Utility Billing Software Actually Does
At minimum, the category turns a property's master utility bills and submeter readings into individual resident bills. The real work is in the details:
- Rate management — knowing the current, correct rate for every utility at every property, and updating when tariffs change.
- Calculation — applying tiered rates, baseline allocations, fixed charges, and discounts to each space's measured consumption.
- Compliance — checking each bill against the rules that govern it before it goes out, and documenting the result.
- Delivery and posting — getting the bill to the resident and the charge onto the operator's ledger in their property management system.
Why Manufactured Housing Is Different
In California, a manufactured housing community bills utilities under its own statute set — not the general landlord-tenant rules apartment tools were built around:
- Every bill must show opening and closing meter readings (Cal. Civ. Code § 798.40(a)).
- Rates are capped at the utility's direct-service rate, tier by tier (Cal. Pub. Util. Code § 739.5(a)).
- Submetered water must be billed from the property's actual water bill, never a posted tariff schedule (Cal. Civ. Code § 798.40(c), since 2022).
- CARE and FERA discounts pass through at 100% (Cal. Civ. Code § 798.43.1(c); Cal. Pub. Util. Code § 739.12(b)).
- Utility charges are separately itemized and any third-party billing agent is disclosed (Cal. Civ. Code §§ 798.41(a), 798.40(b)).
Two consequences follow. First, practices that are routine in multifamily — RUBS allocation, resident-paid service fees, estimated billing — have no safe harbor here (see RUBS vs. submetering). Second, violations are privately enforceable with attorney fees to the prevailing party (Cal. Civ. Code § 798.86), which means billing errors are not just accounting problems. The full rule set is in the 14 California rules.
The Five Questions That Sort the Category
1. “Where do your rates come from?”
The failure mode behind most overbilling is a stale or hand-keyed rate. Ask whether the vendor monitors the serving utilities' published tariffs, how a rate change reaches your bills, and — the real test — whether they can show you the source tariff document behind any rate on any bill. If the answer is “you provide the rates,” the compliance risk is still yours.
2. “What do you check before a bill goes out?”
“We're compliant” is a slogan; a named list of checks with documented results is a control. Ask for the list, the statute each check enforces, and where the results are recorded.
3. “What is your billing basis for water in California?”
This single question exposes whether a vendor has caught up with § 798.40(c). The only lawful basis for submetered water is the property's actual purveyor bill. A vendor pricing water from a rate schedule is billing your residents unlawfully — under your name.
4. “How do CARE and FERA reach my enrolled residents?”
The discounts must pass through at 100%, as separate line items, at the utility's published rates — and CARE and FERA are different programs with different percentages. Ask how enrollments are tracked and what happens on the bill.
5. “When a resident disputes a charge, what can you hand me?”
The end state of every billing question is evidence: the meter reads, the rate, the source document it came from, and the compliance result — for the specific bill in dispute, months or years later. If the vendor's answer is a spreadsheet reconstruction, you are the one holding the risk.
Software-Only vs. Full Service
The category spans two delivery models, and most operators should decide this before comparing vendors. Software/platform models leave the operator running billing — supplying reads, printing and mailing, taking resident calls — with the software ensuring rates and compliance. Full-service models take the whole operation: field meter reads, bill generation, statement mail, and the resident phone line. The right answer is mostly about your staff: an operator with office capacity keeps control and cost down on a platform model; an operator who wants utility billing off their plate entirely buys the service. (Sentinel offers both, on the same engine.)
Frequently Asked Questions
How much does utility billing software cost for manufactured housing?
Most providers in this category quote individually and publish no pricing, so budgeting usually starts with a sales call. Pricing is typically per space per month, with service-inclusive tiers priced above software-only tiers.
Can I just bill utilities through my property management system?
A property management system is a ledger, not a rate engine — it will post whatever charge you compute, but it does not know the current SCE tier rates, the CARE discount, or what § 798.40(c) requires for water. The workable pattern is utility billing software that computes correct, compliant charges and posts them into the property management system as itemized charges.
What happens if my current bills aren't compliant?
Start by finding out — before a resident or their attorney does. Our step-by-step audit guide walks through verifying your current bills against the published rates and the statute set.