Most sellers I meet in Burlingame think of the city's sewer lateral test the way they think of a smoke detector receipt: a small piece of paper the escrow officer needs before recording. Then they get the results back, and the timeline they built the whole sale around no longer fits.
The ordinance is older than most of the homes it applies to, and the way it interacts with a modern Peninsula listing schedule is where sellers lose money. This post is about that gap.
The friction most Burlingame sellers underprice
Here is the number that should reframe how you plan your sale. Since Burlingame's ordinance was enacted, approximately 50 percent of homes tested have required sewer lateral repair or replacement, with individual homeowners footing the bill. Repair costs on the Peninsula range from $1,500 to $10,000, and the work has to be permitted, completed, and signed off by the city before title can transfer.
If you list first and test later, you have handed a coin flip to your buyer. Half the time it lands on a two-week repair project sitting between you and the wire.
The mechanism is straightforward. Burlingame's ordinance applies at transfer, not at listing, but escrow will not close until the lateral passes. So a failed test does one of three things to your deal: it delays closing while you repair, it forces a credit negotiation with a buyer who now has leverage they did not have on offer day, or it hands the buyer a walk-away reason if they were already wavering. None of those outcomes are priced into the list price you set six weeks earlier.
What the ordinance actually requires
The trigger is age of construction, not age of the pipe. Whenever a property is transferred and it includes buildings constructed more than twenty-five years prior to the date of transfer, the sewer laterals must be tested for infiltration and all necessary repairs or replacements performed to prevent infiltration, and that work must be completed and approved by the city prior to transfer of title. In practical terms, if your Burlingame home was permitted before 2001, the ordinance is looking at you.
A few real exemptions exist. You are not on the hook if any of these apply:
- The property is a condominium or cooperative unit, unless the transaction is a conversion to that form
- A test was accepted within the last 10 years with partial or no repairs required, and any repairs were completed under city permit and inspection
- A complete sewer lateral replacement was accepted within the last 25 years, or the city engineer determines testing is unnecessary because the piping has fewer than 3 joints and total length does not exceed 10 feet
The city maintains a public database of past test results, and if there is a question about dates or a test result does not appear in the database, verification can be submitted to the Public Works Department. Before you spend a dollar on a plumber, have your agent pull the database entry for your address. I have had sellers avoid the entire process because a prior owner tested in 2017 and the certification still had time on it.
How Burlingame compares to its neighbors
The Peninsula does not speak with one voice on this. Where you sit matters, and if you own in more than one town, the playbook changes at the city line.
| City | Point of sale test required | Method |
|---|---|---|
| Burlingame | Yes, homes 25+ years old | Water exfiltration or air test, city-witnessed |
| Hillsborough | Yes | Video, with a water test alternative in specific right-of-way cases |
| San Mateo | Trigger-based, not pure point-of-sale | Method not specified in ordinance |
| Pacifica | Yes | Water pressure test |
| South San Francisco | Yes, agreements after June 21, 2022 | Water pressure test |
| Millbrae | Yes | Visual |
The San Mateo shift is worth flagging because sellers who owned through the change often misremember the rule. Effective Dec. 1, 2020, San Mateo revised its private sewer lateral ordinance to four triggers that require inspection, and the city offers grants to help homeowners pay to test, repair, or replace aged sewer laterals, minus a point-of-sale requirement. Burlingame has no such grant program. Your test, your repair, your bill.
Hillsborough is the other outlier worth naming, because a Hillsborough seller who assumes Burlingame rules will apply is going to be surprised at the plumber quote. Hillsborough's ordinance, adopted in 2012, requires sellers to snake a small video camera into the lateral connecting to the sewer main, unless the lateral connects with the sewer main in a street right-of-way, in which case a water test from the building structure to the property line will do.
What test day actually looks like in Burlingame
The test itself is short and the mechanics matter. The test must be witnessed by a City representative to meet the ordinance requirements, and video inspection is not accepted at this time. Sellers who have watched a Hillsborough scope run assume Burlingame will accept the same recording. It will not.
Your plumber will use one of two methods. Testing is accomplished by either a water exfiltration test or an air test, with the air test used in hillside areas where the hydraulic head pressures could damage the pipe. For most flatland Burlingame lots, that means plugging the lateral and riser at the City cleanout and then surcharging the line with water to a point equal to the foundation grade or slab floor level. If your home does not have a cleanout adjacent to the building, you are installing one before you test. The private owner's contractor installs the cleanout with an Encroachment Permit from the Department of Public Works, a cleanout adjacent to the building is required by the Uniform Plumbing Code, and a Plumbing Permit from the Building Department is required for the cleanout or for any work done on private property.
If the lateral passes, it is certified as acceptable, the sale can take place without any further action, and the certification is effective for ten years. If it fails, you get one shot at a do-over. There is one free retest allowed if the first sewer lateral test fails. After that, you are repairing or replacing, and a complete replacement from building to City cleanout is effective for 25 years, while a repaired and tested lateral is effective for ten years.
One more piece the ordinance is explicit about. The City neither has nor will make any determination as to who will pay for the testing and repairing, that is to be decided between the parties involved in the sale. Which means it is a negotiation, and the leverage in that negotiation is set the moment you decide when to test.
The spark arrestor that stops title transfer
While the ordinance work is open, handle the smaller point-of-sale trigger that catches sellers with wood-burning fireplaces. In Burlingame, upon the sale or transfer of real property on which any chimney is located, the transfer of title may not be made until each chimney contains the required spark arrestor, properly installed and in proper working order, and an inspector report has been filed with the Fire Code office. This is a hundred-dollar problem if you catch it in pre-listing and a title-blocking problem if you catch it the week of close.
The sequence I recommend for Burlingame sellers
The whole point of getting ahead of the test is buying yourself optionality. Here is the order that preserves it:
- Pull your address from the city's sewer lateral test database and confirm whether a prior test or full replacement still carries a valid certification
- If it does not, book a licensed plumber for a witnessed water exfiltration or air test before you order photography or set a list date
- If the lateral passes, you now list with a clean certificate in the disclosure package, which is a small but real trust signal to buyers writing offers
- If the lateral fails, you have four to eight weeks of runway to repair on your schedule and your bid, rather than under a 21-day escrow clock with a buyer's plumber holding the estimate
The delta between doing this in pre-listing and doing it under contract is the entire thesis of this post. Same work, same cost, different leverage.
FAQ
Does the ordinance apply if I inherited the home and it never sold under the current rules?
The trigger is transfer of title, not prior ownership history. If the buildings on the property were permitted more than 25 years before your closing date and none of the exemptions apply, plan on testing.
My home is on a Burlingame hillside. Does that change anything?
Yes. The air test is used in hillside areas because water surcharge pressures can damage older pipe. Ask your plumber to confirm which method the city will witness for your specific lot.
The city database shows a passing test from 12 years ago. Am I clear?
No. The certification from a passing test with partial or no repairs is effective for ten years. A full replacement carries 25. A 12-year-old repair-only test has expired and you are back in the queue.
Can I sell as-is and push the test to the buyer?
The city does not care what your purchase agreement says. Title cannot transfer until the lateral passes and any required repairs are approved. You can negotiate who pays, but you cannot negotiate the requirement away.
If you are thinking about a Burlingame sale in the next six months, this is one of a handful of pre-listing decisions that quietly determines your net. I would rather have a fifteen-minute conversation with you now than a fire drill in escrow. Andrew Klink offers a complimentary Peninsula market consultation, and we can pull your sewer lateral database entry together on the same call.
