EMERGING

The City Caught a Tankless Water Heater in Week Six of My Escrow

My seller's tank water heater died mid-escrow and his nephew swapped in a tankless unit over a weekend, no permit. The city inspector found it on day 38 while closing out an old garage permit. Making it legal cost $680 and five days of closing delay.

Birdie Lachance
Staff Writer
May 8, 2026 · 4 min read

At 4:20 on a Tuesday afternoon I stood in the garage of a 1958 cape under contract, watching a city inspector hold a red marker tag against a water heater so new its stickers still smelled of solvent. He wrote a number on the tag and wired it to the gas line. Escrow day 38. Nine days from closing. The tankless unit had been alive for eleven of those days.

The original tank heater had died in week five, and the seller, rather than file an insurance claim or adjust the repair credit, had his nephew install a tankless replacement over one weekend. Gas line resized by eye. Venting improvised thru the old flue collar with an adapter the supply house sold him without asking questions. No permit, which in my city means the unit legally does not exist, and something that does not exist cannot pass the inspection that happened to be standing in my garage.

stickers that still smelled of solvent

The inspector, a compact man in his fifties named Ruiz, had come for the garage permit from 2019, open on the city's books since before I ever saw the house. He closed that file in eleven minutes, then did what good inspectors do, which is stand still and look at everything. The tankless unit hung on the wall like a new student. He read its serial number, checked the city portal on his phone, and asked me, gently, whether I knew anything about it. I did not. Neither did my contract.

week five, a dead tank

The timeline, as I pieced it together later from emails: the tank heater failed on a Thursday of week five, my own inspector had flagged its age two weeks earlier, and the seller chose the fastest fix over the correct one. Everyone meant well. His nephew did the swap in six hours on a Saturday for $1,900 in parts and family rates. Everyone involved would describe the work as clean. Clean and invisible are different standards, and only one of them closes escrow.

what a red tag does to a timeline

A red tag on a gas appliance inside an active escrow is a clock with teeth. My lender needed a green tag or a documented removal before underwriting would issue the clear-to-close, my rate lock expired on the 15th, and the seller's agent spent two days learning the word "legalization" over the phone with the building department. The lock extension alone would cost $240 if we slipped past ten days. Everyone abruptly became a scholar of my municipal code.

The path back was oddly specific. Pull the permit, $185. Have a licensed plumber resize the gas supply, replace the improvised vent run with approved Category III material, and pressure test, $340. Book the expedited re-inspection slot, $155. Total: $680, give or take a fuel surcharge, all of it the seller's money under our repair amendments, and five days of closing that nobody had budgeted.

$680 to make it exist

The plumber, a patient woman named Okafor who has handled worse, called the nephew's venting "ambitious" and replaced it in four hours. Ruiz came back on a Friday at 8:40 a.m., ran the combustion check, watched the pressure test hold at 60 psi for fifteen minutes, and pulled the red tag off the line. Green tag, photographed, emailed to five people within the minute. The unit ultimately existed.

an ambitious vent run

Worth repeating what "ambitious" covered, because future me will want the list. A flue run cobbled from mismatched galvanized pipe, a gas tee sized by thumb, and a condensate line draining into a bucket, which is the detail I find funniest in retrospect. Family rates buy speed. They do not buy Category III stainless, and they certainly do not buy a pressure test certificate with a license number on it.

the bathroom I want in 2027

Here is why I would have paid the $680 myself, seller's money or not. Unpermitted mechanical work does not stay a seller's problem; it migrates. My plan for this house includes a HELOC in 2027 to redo the upstairs bathroom, and the appraisal file for that line of credit would have surfaced this unit eventually, unpermitted, uninspected, attached to a gas line sized by eye. Then there is the refinance question whenever rates justify one. Every future file on this house would carry the same question mark, and question marks cost more than $680.

I have dug into enough permit portals in the last three years to know how a closed permit reads from the other side of a HELOC decision. Boring, complete, dated. That is the aesthetic I am after for this house, permanent bureaucratic boredom, one green tag at a time. The bathroom can wait til the paperwork is beautiful.

the tag stayed on the wall

We closed five days late, on a Friday, and the seller's agent handed me the garage door remote like a relay baton. The red tag never came off the wall, actually. Ruiz left it in the junction box, tag number facing out, cuz a tag's whole career is the record it leaves behind. Eleven days after I first smelled solvent thru the stickers, the unit is legal, documented, and boring. I checked twice.