How to collect lot rent without it eating your month

If you own a small park — a dozen lots, maybe fifty — collecting lot rent is one of those jobs that stays simple right up until it doesn’t. This is an honest look at how owners actually do it, what the common late-fee practice looks like, and the point where the spreadsheet you started with begins to cost you more time than it saves. It’s written for the owner who runs the place, not for a property management company.

The methods owners actually use

There’s no single right way, and most small parks land on one of these:

• Paper invoice and checks. A monthly statement shows the lot rent, any utility charge, and a late fee if one applies. Tenants mail a check or drop it at the office, and someone keeps a running list of who has paid. It’s simple and familiar, and it’s exactly what most sub-100-lot parks still run on.
• A spreadsheet plus a bank deposit. The same paper flow, but the running list lives in Excel or Google Sheets. Better than a legal pad — until two people need to update it, or you need last year’s numbers in a hurry.
• QuickBooks. Where a lot of owners go when the spreadsheet gets heavy. It’s real accounting and it works, but it was built for a business’s books, not for a rent roll of lots, and small owners often find they’re maintaining a parallel spreadsheet anyway to track who’s actually current.
• Online payments. A payment link or portal so tenants can pay by card or bank transfer. This kills the trip-to-the-office and the “the check’s in the mail” problem, and it’s increasingly what younger tenants expect.

Most parks mix these — checks from the long-time residents, a payment link for the newer ones, and a spreadsheet trying to hold it all together.

Late fees: framing the common practice

Charging a late fee is standard practice, but how you charge it is worth getting right, because it’s the part most likely to cause a dispute. The usual shape is a clearly stated grace period, then a flat fee or a small percentage, spelled out in the lease so there are no surprises. The two things that keep late fees clean are consistency — the same rule for every lot, every month — and a record that shows exactly when rent was due, when it arrived, and what was charged.

A word of caution, and this is not legal advice: late fees, notice periods, and what you can charge are governed by state law, and in Colorado specifically by the Mobile Home Park Act, which the Colorado Division of Housing administers through its Mobile Home Park Oversight Program. Before you set or change a late-fee policy, read the statute or talk to an attorney — don’t take a number off a forum. We link the primary source so you can verify the current rule yourself rather than trusting a summary that may be out of date.

Where the spreadsheet quietly breaks

A spreadsheet is genuinely fine for a while. The trouble is that it doesn’t break loudly — it just slowly stops keeping up as the park grows. The inflection points owners describe are consistent:

• Utility pass-through. The moment you start billing water or sewer back to each lot, every month becomes a round of by-hand math, one lot at a time, that has to hold up if a resident — or the state — ever asks how you got the number.
• More than one person on the books. As soon as a part-time manager and the owner both touch the file, you get version-control problems: two copies, a lost update, a “which one is current?” moment on the first of the month.
• The mix of charges. Once you’re tracking deposits, lot rent and home rent separately, rent credits, prepaid rent, and the occasional violation or accessorial fee, a flat spreadsheet gets complicated fast and easy to get wrong.
• The handoff. When the person who built the spreadsheet leaves, the logic in their head leaves with them.

None of these mean you did anything wrong. They’re just the normal signs a park has outgrown the tool it started with.

When it’s worth automating

The honest answer is: not until the manual way actually hurts. If you’ve got fifteen lots, everyone pays by check, and there are no utilities to pass through, a spreadsheet is fine and you should keep your money. The math changes when you add utility billing, park-owned homes, online payments, or a second person on the books — the same inflection points above. At that point a small, purpose-built tool that invoices lot rent, does the utility pass-through math the same way every time, and shows you who’s paid can save a real weekend a month.

That’s the narrow thing we’re building — lot-rent and utility billing for parks under 50 lots, one flat price, no demo call — and if that’s the wall you’re hitting, we’d like to hear about it. There’s no hard sell here; early access just means you help shape it and lock the early rate. Tell us about your park below.