Buying in Federal Way? The One Inspection Nobody Will Make You Get

A rule that stops at the county line

In Tacoma, property owners are required to have a certified inspection of their private side sewer before the sale or transfer of a home or business, and the same requirement is triggered by a major remodel or by building over an existing side sewer. That sits in Tacoma Municipal Code 12.08.720. Real estate professionals there have also been required since December 2010 to give buyers and sellers a side sewer information flyer before closing.

The city introduced it as part of an inflow and infiltration removal program, the aim being to keep rainwater and groundwater out of the sanitary system so that sewage stops backing up into homes and streets during heavy weather. It is a public infrastructure measure rather than a consumer protection one, but the effect on buyers is real: in Tacoma the system forces the check.

Federal Way has no equivalent requirement, and neither does Lakehaven. Nobody will make you do this. Which sounds like an advantage and is actually the opposite, because the risk did not go away when the requirement did.

What your home inspector is not doing

A general home inspection is genuinely useful and it covers a great deal. It does not include putting a camera down the sewer lateral, and most buyers assume otherwise until somebody tells them.

What the inspector will do is run the fixtures and observe whether they drain. That tests flow on the day, at low volume, in dry conditions. A lateral with root intrusion, a belly holding water, or a partially offset joint will very often pass exactly that test while being in a condition that costs a great deal to put right.

So the pipe running from the building out to the public main is, in most transactions, the single largest thing nobody has looked inside. It is buried, it is long, it is expensive to replace, and its condition is invisible from the surface.

It is worth being precise about what is and is not covered elsewhere, because buyers routinely assume some other party has this in hand. The lender does not check it. The appraisal does not check it. Title insurance covers ownership questions rather than physical condition. And the seller disclosure asks what the seller knows, which on a buried pipe they have never seen is frequently and honestly nothing at all. There is no point in the standard transaction where anybody is required to look, which is exactly why Tacoma legislated to force it.

Why the odds are what they are in this city

Two local facts stack. Federal Way's median construction year is around 1984, and roughly sixty two percent of the city's housing went up between 1970 and 1999. That puts most laterals here somewhere between about twenty five and fifty five years in the ground.

And the neighborhoods were cut into standing second growth timber with a great many firs and cedars left in place. Those root systems now sit over jointed pipe of exactly that vintage. Root intrusion is not an unlucky outcome here, it is the expected one on a proportion of properties.

Then there is the third fact, and it is the one with the money attached. In this district the lateral never stops being private property, and that holds true for the length running beneath the public road as well as the part inside the fence. A failure out under the asphalt lands on whoever holds the deed. After completion, that is you.

What an inspection actually shows a buyer

Root intrusion appears as fibrous mass entering at a joint. What matters is not that roots are present, which is common, but how much sound pipe wall is left around where they got in.

A belly shows as standing water that does not clear as the camera passes. The line has settled and lost its fall, so it no longer self cleans. That is a permanent condition and cleaning does not address it.

Offset joints appear as a visible step between sections. Small ones catch material. Large ones are structural failure.

Grease coating is the good news finding, because it narrows the pipe without any structural defect and responds to cleaning.

And then the ones that end the conversation: cracking along the length, corrosion in cast iron, and the soft delaminated appearance of failing Orangeburg.

What you do with each of those as a buyer differs. Grease is a cleaning cost and barely worth raising. Roots in sound pipe are a known maintenance item you can price and either absorb or negotiate. A belly, a collapse or material at the end of its life is a repair or replacement running into real money, and that is a number you want in front of you before the inspection period closes rather than after.

Two limitations worth knowing so nobody oversells you the result. A camera cannot see through standing water, so a line holding significant water may need clearing before the run gives a usable picture. And it tells you nothing about how thick the pipe wall still is, so how old the line is and what it was made from stay part of the assessment rather than being answered by the video.

How to use it in a transaction

Book it early in the inspection period rather than at the end. If the camera finds something, you will want time to get quotes, and quotes for sewer work involve permitting questions that do not resolve overnight.

Insist on a locate alongside the inspection. Position and depth marked on the surface is what turns a video into a repair estimate, and it also tells you whether a defect sits inside the boundary or out under the road, which changes the scale of the work considerably.

Get the recording. It is the evidence behind any price adjustment you ask for, and it travels with you rather than living on somebody else's laptop.

And keep it after closing. A baseline recording from the year you bought makes the next inspection in five years genuinely meaningful, because you can see what has changed rather than starting from scratch.

If you already own the house

The same logic applies with the deadline removed. Four moments make it worth doing: after a second blockage in a year, before any excavation or significant landscaping near the line, before agreeing to a quoted replacement, and before you sell.

That last one is worth thinking about even though nothing here compels it. Knowing the condition of your own lateral before a buyer's inspector does is a considerably better position than finding out during a negotiation, and the cost of knowing is small.

The same applies before you spend money on the ground above it. Anyone planning a driveway, a patio or serious planting should know where the line runs and how deep first, because discovering it with a mini digger is a bad way to find out and repairing it under fresh concrete is worse. That is also the moment a supply side check is cheap to add, since the crew is already on site.

The one that saves the most money, though, is the second blockage. Repeated clearing visits on the same run are the clearest signal that something structural is catching material, and continuing to pay for clearing without ever looking is how people spend the cost of a repair without receiving one. A camera run is the step that converts that into a decision.