Every estate manager has a version of the same night. A call at an hour nobody wants, a sound of water where there should be none, and a decision to make about a house that is not yours, with a principal who will hear about it either way.
Almost every one of those calls was preventable, and preventable months earlier, by somebody looking at four or five things that give plenty of warning before they fail.
This is written for the person who holds the vendor list. Not a general homeowner guide with the word luxury added, but the plumbing and mechanical side of the job as it exists on a managed property: what to check and how often, what fails quietly, what to write down, and what to expect from a firm you keep on retainer.
Why water is the expensive one
Fire and theft get the attention. Water does the damage.
In twenty-eight years of working in these houses, the failures that have cost our clients the most were rarely dramatic. They were ordinary supply lines, connectors and valves letting go in a room nobody was standing in. What makes them expensive on a managed property is not the plumbing, which is a morning's work. It is what the water lands on: plaster, millwork, stone, art, a wine room, and finishes with lead times measured in months.
The other difference is time. In an occupied family home a supply line failure is discovered in minutes. In a house that is empty four days a week, or empty between visits, the same failure runs until someone opens the door. The cost of a leak is the flow rate multiplied by how long nobody was there, and the second number is the one you control.
The quarterly walk-through
Four visits a year, half a day each on a large property, is the cadence that catches nearly everything. Here is what a professional is looking at, in the order that makes sense to walk it.
The mechanical room. Water heaters: age, sediment, the condition of the anode rod, the temperature setting, the drain pan and where its drain goes. Recirculation pumps: running, quiet, and on the right schedule. The pressure regulator and the static pressure reading. Expansion tanks. Seismic strapping and flexible connectors. Any sign of past weeping around fittings, which shows up as green or white staining long before it shows up as a drip.
The main. Where the main shutoff is, whether it turns, and whether anyone on staff has ever turned it. A valve that has not moved in fifteen years is a valve that will not move on the night it matters. Same for every fixture stop in the house.
Every fixture, in every bathroom, including the ones nobody uses. Supply stops, flexible connectors, trap condition, drain speed, and whether the fixture still works. Angle stops and braided connectors are cheap parts with a service life, and they are the single most common cause of a catastrophic indoor flood.
Under every sink, behind every appliance. Dishwasher, refrigerator ice line, washing machine hoses, water filter housings. The ice maker line is a famous offender because it is plastic, it is behind a heavy appliance, and nobody looks at it.
Drainage. Area drains, yard drains, sump pumps and their backups. On a hillside lot this is a winter item, not a nice to have.
Outside. Hose bibs, backflow devices, irrigation isolation, pool equipment plumbing, exterior showers.
Half of that list can be done by a competent estate manager with a torch and this page. The other half wants a licensed plumber, because the judgment about whether the staining under a fitting is old or active is the entire value of the visit.
Systems that fail silently
Four things on a large property degrade without giving anyone a symptom until they fail completely.
Water heaters. Sediment accumulates in the bottom of a tank and insulates the burner from the water, which raises the flue temperature and shortens the life of the tank. The anode rod is the sacrificial part that corrodes so the tank does not, and once it is consumed the tank is on its own clock. An annual flush and a rod check every three to five years is the whole maintenance program, and it is skipped almost everywhere.
Recirculation pumps. A failed pump does not flood anything. It just stops, and the far bathroom takes ninety seconds to get hot, and everyone assumes that is how the house is. Meanwhile the pump that seized is drawing current and the zone it served may be running cold through a heated line.
Pressure regulators. These fail open. When one does, street pressure arrives at the house unregulated, and every fixture, connector and appliance in the building is suddenly rated below what it is holding. High static pressure is the invisible cause of a lot of "random" connector failures. It is a five minute check with a gauge.
Sump pumps. A sump pump is a device that sits unused for eight months and is then asked to perform for seventy two hours straight. Test it, and specify a backup, either battery or water powered, on any property where the pump failing means water in a finished lower level.
Guest houses, pool houses, and the wings nobody uses
Low use plumbing is higher risk plumbing, which is the opposite of what intuition suggests.
Traps in unused fixtures dry out and let sewer gas into the building, which is usually the first complaint about a guest house that has been closed for a season. Stagnant water sits in dead legs. Nobody notices a slow leak because nobody is there. And the shutoff for the pool house is often somewhere only the person who installed it knew about.
Three habits fix most of it: run every fixture in the building on a schedule, even if it is a staff member with a list once a month; know and label the isolation valve for every outbuilding; and treat any structure that will be empty for a season as one to isolate at the valve rather than leave live.
The Peninsula year
Late summer into autumn. Drainage before the rain: area drains cleared, sump pumps tested and backups verified, roof drainage checked where it discharges into the same system. This is also the right window for a sewer lateral camera, because a root intrusion found in September is a scheduled repair and the same intrusion found in January is an emergency.
Winter. The wet months are when infiltration, hillside drainage and sump capacity are tested for real. Frozen pipes are rarely the issue at this elevation. Standing water is.
Spring. Irrigation start-up, backflow device testing where the jurisdiction requires it, exterior hose bibs and the pool system.
Summer. The quiet season, and therefore the right one for anything that takes the water off: heater replacement, fixture work, repipes, anything with a lead time on parts.
The documentation
This is the part that makes a manager's job easier for years, and it is the part almost nobody has.
A shutoff map. A drawing of the property with the main, every isolation valve, every outbuilding, and the gas shutoff marked, posted in the mechanical room and held digitally. Every person who works in the house should be able to find the main in the dark.
As-builts and route notes. Where the lines run. On a property that has been added to over decades this knowledge lives in the heads of the trades who did the work, and it leaves when they do.
A service log. What was done, when, by whom, with the part numbers. Water heater install dates. Filter sizes and change dates. Fixture makes and models with finish codes, which matters enormously when a cartridge fails on a European fixture and the replacement has to be identified before it can be ordered.
A written inspection report after each visit, with photographs, so a principal who asks what has been happening to the house gets a document rather than a recollection.
Our annual inspection produces a written report for exactly this reason, and the camera inspection of the main lateral goes into it.
One firm on retainer, or calling around
There is an honest case for calling around: on a one off repair with no urgency, three bids find a better price.
There is a better case for a relationship on any property you are responsible for, and it comes down to four things.
Response. A firm that holds a plan relationship schedules you ahead of the general queue. On our plans that means next business day scheduling on Exclusive and within forty eight hours on Pro Care. Our hours are Monday to Friday, 8:00am to 4:30pm, and we say so plainly rather than claiming a round the clock service we do not staff.
House knowledge. The technician who serviced the property last year knows where the shutoffs are, which bathroom feeds off the odd branch, and what the previous owner did in 1998. That knowledge is worth more than a small difference in hourly rate, and it is destroyed every time the vendor changes.
Parts. On a property with high end European fixtures, availability is the whole game. We stock and pre-stage parts for Dornbracht, Waterworks, Fantini, Lefroy Brooks, House of Rohl and Vola, and we keep a parts profile on file per property, so a failed cartridge is a visit rather than a search.
Discretion. Our technicians are background checked, our employees are under NDA, and we sign property specific NDAs on request. For a manager whose principal expects the house to stay private, that is a procurement requirement rather than a courtesy.
How the plans work on a managed property
Three tiers, published, with the terms stated.
Exclusive, $999 a year. Next business day scheduling, 15% off service pricing, an annual 100 point inspection, a camera inspection of the main lateral, a written report, filter cartridge labor once a year, a loaner faucet program, parts kept on file for key fixtures, and a two year workmanship warranty.
Pro Care, $449 a year. Scheduling within 48 hours, 10% off service pricing, and the same annual inspection, lateral camera and written report.
Essential, $149 a year. Priority queue and 5% off service pricing.
Pro Care and Essential renew automatically unless canceled 30 days before renewal, and require a card on file. Filter cartridge labor covers undercounter and whole house twelve month filters, material not included, with owner supplied cartridges accepted.
For a managed property the report and the parts file are usually worth more than the discount. They are what turns your knowledge of the house into something that survives your holiday, your successor, and a sale.
Where to start
If you look after a property in San Francisco, Atherton, Menlo Park, San Mateo or anywhere along that corridor, start with one full inspection and a shutoff map. Everything else follows from knowing what you have.
We have been doing this work since 1998, under CSLB license #746000, with twenty licensed, bonded and insured plumbers, in English and Spanish. Beyond the plan work we handle scheduled plumbing maintenance, leak detection and water heater service on the same properties, and a monitoring system can be folded into the arrangement as described in our note on smart water monitoring.
To put a property on a schedule, see the home protection plans or request a first inspection.
