Home, Pest, Sewer and Foundation Inspectors in SF: Your Bench

Line up your inspectors before you write an offer, not after. In San Francisco the seller usually hands you their own inspection reports up front, offers are often non-contingent or carry a window of a few days, and the housing stock is old enough that the expensive problems hide in places a generalist will not open. If you have to find a sewer scope operator on day two of a five-day contingency, you will take whoever answers the phone.

Why SF buyers line up inspectors before offers

The California purchase contract defaults to a 17-day inspection contingency. Bay Area agents describe negotiated windows of 7 to 10 days as the practical norm, and in San Francisco many winning offers carry shorter windows or none. The reason sellers can ask for that is the disclosure package: a well-prepared San Francisco listing typically includes a general inspection, a pest report, often a sewer lateral video and a natural hazard report.

That package is useful and it is not yours: the inspector was hired by the seller, within the scope the seller paid for. The disclosure package article covers what is in it; this one covers who you need.

General home inspector

A standard inspection is a two-to-three-hour visual walk of the structure, roof, exterior, electrical, plumbing, heating, interior and attic or crawlspace where accessible. In the Bay Area, published 2026 cost guides put the fee at roughly $500 to $850 as of 2026-10-25, with pre-1950 homes commanding a 10 to 20 percent premium. Those are national guide figures, not a local survey, so check current figures and get quotes.

How to vet one:

• Ask for a sample report on a pre-1920 San Francisco home. You want photos, specific locations and plain-language severity, not a checklist of "serviceable."
• Ask what they look for in a Victorian or Edwardian: brick foundations, cripple walls, knob-and-tube, galvanized supply lines, unpermitted additions in the garage level.
• Ask whether they will do a paid desk review of a seller's report when you cannot get access. It is the most valuable hour you can buy on a non-contingent offer.

Pest inspector: Section 1 vs Section 2

California wood-destroying pest reports, regulated by the Structural Pest Control Board, sort findings into two categories:

• Section 1: visible evidence of active infestation or infection, or damage that has resulted from it. Termites, dry rot, fungus damage.
• Section 2: conditions likely to lead to infestation, with no visible evidence yet.
• Further inspection items are areas the inspector could not reach, so they are neither.

The report covers only visible and accessible areas, and mold is outside its scope. The seller's report usually comes in the disclosure package. Use it to see what the seller already knows, then get at least two bids on any Section 1 items before deciding what to ask for, because repair bids for the same findings differ far more than inspection fees do.

Sewer lateral camera scope

Much of San Francisco's housing still drains through original clay or cast-iron laterals. The SFPUC is clear about who owns the problem: the entire lateral belongs to the property owner, who must hire a licensed plumber or contractor to inspect and maintain all of it (jetting, cleaning, camera inspections) and to repair or replace the upper section from the building to the curb. The SFPUC says that under most circumstances it repairs or replaces structural defects in the lower section, from the curb to the main, so a scope report that shows where a defect sits decides who pays for it.

What San Francisco does not have is a sale-triggered certificate: East Bay cities under EBMUD's program require one at title transfer and some other Bay Area cities have point-of-sale rules, but here nothing in the sale process forces a look at the pipe.

The job takes about half an hour: a camera goes in at a cleanout and runs to the main, looking for cracks, offsets, roots and bellies. National cost guides put the price around $200 to $500 as of 2026-10-25; check current figures. Book a scope-only operator or insist on the video file and a written report; a plumber who discounts the scope to sell the repair has a different incentive. Replacement estimates from other Bay Area agencies run $4,000 to $11,000 depending on length, depth and pavement, so the scope is cheap insurance.

Foundation, seismic and soft-story specialists

Three San Francisco-specific conditions deserve a structural engineer rather than a generalist:

• Brick and unreinforced foundations. Common in early-1900s buildings. An engineer can tell you whether it is a candidate for a bolted sill and new concrete, or a full replacement.
• Cripple walls. The short wood walls between foundation and first floor. Retrofit guidance says an engineer is needed when cripple walls exceed about four feet or the home is on a steep slope. National cost guides put a cripple-wall retrofit at roughly $3,300 to $7,600 as of 2026-10-25 (check current figures), and Bay Area labor costs run higher.
• Soft-story buildings. San Francisco's mandatory program covers wood-frame buildings with five or more residential units and three or more stories, or two stories over a basement or underfloor area, permitted before January 1, 1978. For a condo or TIC in such a building, check DBI's soft-story properties list for compliance status and read the HOA documents for how the retrofit was paid for.

Also on an engineer's list: retaining walls, additions on posts and piers, and any floor that slopes enough to roll a marble.

Roof, chimney, electrical, drainage and underground tanks

• Knob-and-tube wiring. Bay Area news coverage has described insurers declining homes with knob-and-tube and sellers spending tens of thousands to replace it before closing. Get an electrician's estimate before you set your price and talk to your insurance broker before contingencies expire.
• Roof and chimney. Flat roofs and unreinforced masonry chimneys are common; a chimney scope is a typical $100 to $400 inspection add-on.
• Drainage. Hillside lots, below-grade garages and light wells collect water; ask the general inspector whether a drainage contractor should look.
• Underground heating-oil tanks. Removal in San Francisco needs Fire Department and Public Health permits, plus Public Works if the sidewalk is disturbed, with city fees on top of contractor cost and any soil remediation; as of 2026-10-24, check sf.gov for current permits and fees. If the disclosures mention a tank or the inspector finds a fill pipe, price it.
• Permit history. Order or read the 3R report, which lists building permits on file and the number of legal units; an "unknown" or inconsistent entry on the occupancy or unit-count line is itself a finding. The red flags article covers unwarranted units.

Pre-offer inspections

When an offer is going to be non-contingent, the only time to inspect is before you write it. Your agent asks the listing agent for access; most sellers allow it because it produces cleaner offers. You pay whether or not you win, so reserve it for homes you are genuinely likely to bid on.

It makes sense when the seller's package is thin, when a specialist question is open (foundation, lateral, electrical), or when the answer changes your price by more than the inspection costs, which in this city is nearly always. Factor the findings into how much you offer and check the price against the comps tool rather than treating repairs as a reason to walk.

Building a bench you can mobilize in 48 hours

Do this before your first serious offer:

• Interview two general inspectors; keep the one with the better sample report and ask about their turnaround for a desk review.
• Get the name and cell number of a scope operator who will send video same-day.
• Identify a licensed structural engineer who does flat-fee site visits and letters.
• Add an electrician and a roofer who give written estimates from photos.

Then, when a listing appears, you can have three people through the house in two days. Inspections in contract covers what to do with the findings in escrow, and contingencies covers what you give up by waiving.

What to shop for right now

• Home inspector (medium savings). Fees cluster in a narrow band; shop on report quality and old-house experience.
• Pest inspector (low savings). The seller usually supplies the report; shop the Section 1 repair bids instead.
• Sewer lateral scope (medium savings). Scope-only operators and plumbers quote the same half-hour job very differently; book the one that only sells the look.
• Foundation and structural specialists (medium savings). Compare a flat-fee engineer's letter against contractor estimates that arrive with a repair bid.