Drain cleaning services in the Sunset and West San Francisco

Post-war rows near the ocean

The west of the city is the best example of the post-war building boom in San Francisco. Long rows of similar houses, many built in the 1930s to the 1950s, with stucco fronts, a garage at street level and living space above, march across blocks that were once sand. A few hills, near the lake and the college, interrupt the grid.

Because so much was built in so few years, the drains follow a pattern. Cast iron branches inside, a clay or, in some blocks, fibre lateral to the street, and a cleanout in the garage or at the front.

Cast iron under raised floors and slabs

Houses built in these years carry waste through cast iron inside. Over decades, scale and corrosion narrow the bore, and hair, grease and paper catch on the rough wall. A line that clears and slows again within weeks is the usual sign.

Homes of that era sometimes have cast iron, and a camera confirms. See cast iron drain cleaning.

Clay or fibre laterals

From the house to the street, the lateral in some rows is clay, with joints that loosen over time, and in some blocks, a fibre pipe known as Orangeburg, which can deform with age. A cutter or high-pressure jet can catch on a deformed section, which is why a camera often goes first.

We never tell a reader what their lateral is made of. See Orangeburg pipe clogs and clay sewer lateral clogs.

Sandy ground and silt

The ground here is sandy, and water moves through it easily. Older laterals with open joints can take in water and fine silt during or after a wet spell, and silt settles where the pipe is flat. Rain in the region tends to arrive in winter bursts.

A camera shows where silt collects. Treat this as a general pattern, not a forecast. Every Sunset and the West home is a little different, so describe yours when you call.

Flat blocks and slow laterals

The blocks are mostly flat, so laterals have little fall. A low spot or an offset holds water and solids, and solids do not travel far. A line that works at quiet times may struggle at peak use.

A camera reveals low spots, and a description of where and how often it clogs helps the crew member decide where to look. Every Sunset and the West home is a little different, so describe yours when you call.

Garages and cleanouts

The garage is where most work begins. The cleanout may be in the floor, in a wall or at the front of the building, and the garage often holds storage as well as a car. Clear a path if you can. See cleanout location and access.

Low-flow fixtures in older rows

Many houses here have had their toilets replaced with low-flow models. In an older line with scale or a low spot, a smaller flush may not carry solids as far. Nothing is wrong with the fixture, and the pipe has less margin. See low-flow toilet clogs.

In-law units and remodels

Many houses have a ground-floor unit or an added bathroom tied into the original lateral. More fixtures on an old line can expose scale, roots or a low spot. Remodels also leave mixed materials.

The hills

Where the street climbs toward the hills, lots slope and laterals change grade. Solids settle where the pipe levels out, and cleanouts may be at more than one level. See hillside sewer lateral clogs.

Habits that make the biggest difference

In a post-war row house, habits do most of the work. Scrape plates and pans into the bin, wipe greasy cookware before washing, keep wipes and paper towels out of the toilet, and use a hair catcher in showers. Fit a lint trap to the washer hose.

These habits do not make an old line clog-proof, but they remove most of the avoidable causes, and they lengthen the time between visits.

Buying or selling a post-war house

Buyers of post-war houses routinely ask for a sewer camera inspection, since a lateral of that era may be clay or fibre and the iron inside may be scaled. A scope shows the pipe material, roots, offsets and low spots. Lateral rules vary by city and agency, so check locally before you rely on any scope for a transaction. We do not state any rule.

See sewer scope when buying or selling.

A plan for a post-war house with repeat clogs

If a line has clogged more than once, ask for a camera run once it is open. Ask what the pipe is made of in each section, where scale is heaviest and where roots or a low spot are. Keep the footage and a note of the distances.

From there a schedule makes sense, matched to the cause. We cannot promise a clog will not return.

What a camera usually shows in these rows

In a post-war house, the camera typically shows a lateral in clay or fibre running from the cleanout toward the street, with a few open joints, silt on the floor of the pipe and sometimes a shallow low spot. Closer to the house, where the line is cast iron, it can show scale and rust nodules narrowing the bore.

A technician can show you where scale is heaviest and tell you how often cleaning is likely to be needed.

What to tell us when you call

Tell us the year the house was built, whether the garage is at street level, where the cleanout is, which drains are slow and whether several react together. If the line has clogged before, say when.

What happens on the day, and what it costs

Call at any hour. A person asks which drains are affected, when the building was built, whether it sits on a slab or a raised foundation and whether you know where the cleanout is, then connects you with an independent technician who works nearby. The price is given before the work begins.

No arrival time is promised, though emergency calls are taken around the clock. Lateral rules vary by city and agency, so check locally if you are buying or selling. That is true of many San Francisco County homes, and the technician can tell you more on site.

Common questions