San Francisco Contractor BondsPlus DPW Excavation Permits
Every California contractor needs the $25,000 CSLB license bond (BPC § 7071.6). If your San Francisco job touches a street, sidewalk, or curb, you also need a separate $25,000-minimum DPW excavation deposit under Public Works Code § 2.4.40 — sized to your engineer's restoration estimate if that estimate runs higher. No other California city codifies its right-of-way bonding this specifically: San Francisco's Public Works Code runs a full deposit-and-security article (Article 2.4) most cities handle with a one-paragraph permit condition.
Statewide CSLB License Bond
$25,000BPC § 7071.6 — filed with CSLB. Required regardless of city. Every SF contractor needs this first.
DPW Excavation Deposit
$25,000+PW Code § 2.4.40 — filed with SF Public Works. Only if the job breaks ground in the right-of-way.
Why San Francisco Runs the Richest Municipal Bond Layer in California
Most California cities treat street-cut work as a permit condition — pay a fee, post a small deposit, move on. San Francisco codified it instead. Article 2.4 of the Public Works Code — "Excavation in the Public Right-of-Way" — runs through dozens of numbered sections covering deposits, insurance, restoration standards, and enforcement, administered by the Department of Public Works' Bureau of Street-Use and Mapping. Layer on Article 15's street-space and encroachment provisions (§§ 724 and 786) and San Francisco ends up regulating right-of-way work with a specificity that simply doesn't exist in Sacramento, San Jose, or Fresno's municipal codes.
The practical effect for a contractor: San Francisco is not a "CSLB bond plus a generic city permit" market. It's a market where the type of work you're doing — trenching, staging material, or installing a permanent fixture in the sidewalk — determines which of at least three distinct code sections applies, each with its own bond, fee, or insurance mechanic. Getting the classification wrong doesn't just cost time; a Major Encroachment application filed as a routine excavation gets bounced back for a Board of Supervisors resolution it was never scoped for.
This page walks the DPW layer in the order a contractor actually encounters it on a real SF job: the excavation deposit that applies to almost any street-cut, the street-space and encroachment permits that apply to staging and permanent fixtures, the restoration liability that outlives the permit itself, and finally the statewide CSLB bond every contractor already needs. For the base statewide rules, see the California CSLB bond hub; for how SF compares to Southern California's LADBS-driven system, see Los Angeles.
DPW Excavation Permit Bond Mechanics
The $25,000 deposit that applies the moment you break ground in the right-of-way.
Any contractor who excavates — or causes an excavation — in a San Francisco street, sidewalk, or other public right-of-way must first submit and maintain a deposit with DPW's Bureau of Street-Use and Mapping. The statute doesn't call it a "bond" exclusively — it accepts a surety bond, a cash deposit, or other Department-approved security — but the dollar mechanics are fixed: a $25,000 floor, or your engineer's estimated restoration cost, whichever is higher. Utility crews, municipal excavators, and other frequent permittees can run a single standing deposit across multiple jobs instead of posting a new one each time, as long as the balance never drops below $25,000.
This is separate from — and stacks on top of — the $25,000 CSLB license bond every California contractor already carries. A C-8 concrete contractor replacing a Mission District sidewalk panel is filing two bonds with two agencies for the same job: the state bond that activates the CSLB license, and the DPW deposit that activates the excavation permit.
Official California (San Francisco) Requirements
"The deposit shall be in the sum of $25,000 in favor of the "Department of Public Works, City and County of San Francisco.""San Francisco Public Works Code, Article 2.4, SubArticle IV • San Francisco Public Works Code § 2.4.40
How DPW Sets Your Excavation Deposit Amount
San Francisco Public Works Code § 2.4.40
Street-Space Permits vs. Major Encroachment Permits
Two more filings — one for temporary staging, one for permanent right-of-way fixtures.
Street Space Permit — § 724
Temporary staging during active construction
Article 15's "Temporary Occupancy of Street" provision covers dumpsters, material stockpiles, and equipment staged in the roadway or on the sidewalk while a job is underway. Occupied width is capped at roughly one-third of the roadway and half the sidewalk, with a minimum four-foot pedestrian path maintained at all times. It's a fee permit — charged per block-face, per day, plus SFMTA parking-meter fees where applicable — not a bonded obligation.
Major Encroachment Permit — § 786
Permanent structure in the right-of-way
A surface or subsurface fixture — a vault, an awning support, a below-grade structure — that occupies the right-of-way indefinitely is authorized only by a revocable encroachment permit, and only by a Resolution of the Board of Supervisors, not by DPW staff sign-off. It carries a $2,032 new-application fee, an annual public right-of-way occupancy assessment under § 786.7 (currently $6.00 per square foot per year, minimum $100), and a $2,000,000 insurance policy maintained for the life of the encroachment.
Neither of these is bonded the way the excavation deposit is — but both are filings a contractor working SF right-of-way frequently needs on the same job as the § 2.4.40 deposit. A sidewalk cafe buildout, for instance, can trigger a Street Space Permit for the construction staging and a Major Encroachment Permit if the finished structure leaves a permanent footing in the sidewalk.
Trench-Restoration Liability Outlives the Permit
Why the deposit sits for three years after the backfill is done.
Closing the permit doesn't close the obligation. Public Works Code § 2.4.70 places the repair and maintenance duty squarely on "each owner and its agent that excavates or causes to be made an excavation" — they must maintain, repair, or reconstruct the excavation site "until such time as the public right-of-way is reconstructed, repaved, or resurfaced by the Department." That can be years after the original backfill, since San Francisco resurfaces streets on its own capital cycle, not on the contractor's schedule.
This is precisely why § 2.4.46(d) holds the $25,000-plus deposit for three years after "satisfactory completion of the excavation" rather than releasing it at final inspection. Trench pavement rarely fails on day one — it settles progressively as backfill compacts under traffic loading, and the failure mode DPW is actually underwriting against (a sunken, hazardous trench line) typically shows up in year two or three, not week one. Sureties writing this deposit see claims cluster in that same window: the risk isn't the excavation itself, it's what the pavement does to it over the following two to three winters of freeze-thaw and traffic loading.
For a contractor pricing this bond, that three-year tail matters more than the face amount. A carrier underwriting a $25,000 deposit is really underwriting a three-year window of latent pavement-failure risk, which is part of why frequent SF excavators often carry it as a continuous, renewing security rather than a one-off per-job bond — see the surety bond cost guide for how tail risk factors into premium.
The Statewide CSLB Layer Underneath All of This
The $25,000 bond that has to exist before any of San Francisco's permits matter.
None of the DPW-side filings above replace the foundation: every contractor performing work in California, including San Francisco, must hold the $25,000 license bond required by Business and Professions Code § 7071.6, filed with the Contractors State License Board and unrelated to any city agency. It's what activates the license itself — DPW will not issue an excavation permit, a street-space permit, or an encroachment permit to a contractor whose underlying CSLB license isn't active, which makes this the bond that has to be in place before any SF-specific filing is even possible.
LLC-licensed contractors carry a second statewide obligation on top: a $100,000 employee/worker bond under BPC § 7071.6.5, covering employees for unpaid wages, unpaid interest on wages, and fringe benefits — plus, for LLCs party to a collective bargaining agreement, unpaid welfare fund, pension fund, and apprentice-program contributions. That brings a San Francisco LLC contractor's baseline state-side bonding to $125,000 before a single DPW deposit is even discussed. See the full breakdown on the California CSLB bond hub and the dedicated CSLB bond page.
Official California Requirements
"A bond required by this section shall be in the amount of twenty-five thousand dollars ($25,000). The bond shall be executed by a sufficient surety... and shall be filed with the registrar by the licensee or applicant."California Contractors State License Board (CSLB) • California Business and Professions Code § 7071.6
A Prevailing-Wage Note Most SF Permit Guides Skip
Holding a DPW excavation, street-space, or encroachment permit does not, by itself, make a job subject to prevailing wage. California Labor Code § 1771 ties the prevailing-wage requirement to who's paying for the work — a public agency contract funded in whole or part by public money — not to which permit authorizes the physical dig. A private property owner's contractor repairing a sidewalk under a § 2.4.40 excavation permit is doing private work in the public right-of-way; the permit doesn't convert it into a public work.
The line moves the moment the City and County of San Francisco is the party contracting for the work — a DPW capital project, a Muni utility relocation, a public infrastructure repair let out to bid. At that point, Labor Code § 1771 prevailing wage applies to every worker on the job regardless of which excavation or encroachment permit covers the physical trench. Contractors who bid both private permit work and City public-works contracts in San Francisco need to track this distinction per contract, not per permit type — the same C-12 crew can be off prevailing wage on Monday's private sidewalk repair and on it Tuesday for a City-let street project using an identical DPW permit.
The Full San Francisco Bond & Permit Stack
Every layer, side by side — who administers it, what it costs, and what triggers it.
San Francisco Contractor Bonding — Every Layer
State CSLB bonds plus the three DPW/Public Works Code filings covered on this page
| Layer | Authority | Amount | Statute / Code | Trigger |
|---|---|---|---|---|
| CSLB License Bond | CSLB (statewide) | $25,000 | BPC § 7071.6 | Every CA contractor, filed once |
| CSLB LLC Worker Bond | CSLB (statewide) | $100,000 | BPC § 7071.6.5 | LLC-licensed contractors only |
| DPW Excavation Deposit | SF Public Works | $25,000 min. (or restoration estimate) | PW Code § 2.4.40 | Any street/sidewalk excavation |
| Street Space Permit | SF Public Works | Fee only — no bond | PW Code § 724 | Temporary material/equipment staging |
| Major Encroachment Permit | Board of Supervisors | $2,000,000 insurance + $2,032 application fee | PW Code § 786 | Permanent fixture in right-of-way |
State layers (BPC) file once with CSLB. City layers (PW Code) are permit-specific and stack on top, one filing per job type.
Sources: Cal. Bus. & Prof. Code §§ 7071.6, 7071.6.5 (leginfo.legislature.ca.gov); San Francisco Public Works Code §§ 2.4.40, 724, 786 (codelibrary.amlegal.com); SF Public Works 2026-2027 Permit Fee Schedule (sfpublicworks.org).
Start With the CSLB Layer — DPW Deposits Follow at Permit Pull
Get your $25,000 statewide bond priced now; we'll flag the DPW excavation deposit if your job needs one.
Get your San Francisco contractor bond quoteSan Francisco Contractor Bond FAQs
Six questions specific to the DPW excavation and encroachment code stack.
Does San Francisco require its own excavation bond on top of the CSLB license bond?
How long does DPW hold my excavation deposit after the job is finished?
What’s the difference between a Street Space Permit and a Major Encroachment Permit in San Francisco?
Who’s liable if the pavement settles over my trench after DPW repaves the street?
Does prevailing wage apply to my San Francisco DPW excavation permit job?
Can one deposit cover more than one excavation permit in San Francisco?
Related Bond Resources
California City & State Pages
California statewide CSLB bond ($25,000)Los Angeles contractor bond (LADBS layer)CSLB bond — statute-level detailCalifornia LLC $100,000 worker bondAll 50 state contractor bonds
All content is researched from official state and federal sources (.gov) and verified before publication. BuySuretyBonds.com works with Treasury-certified, A-minimum rated surety carriers serving all 50 states.
Two agencies, two filings — we quote the one you need first.
The $25,000 CSLB bond under BPC § 7071.6 is the filing every San Francisco contractor needs before anything else. If your scope breaks ground in the right-of-way, tell us on the form and we'll flag the DPW excavation deposit under Public Works Code § 2.4.40 too.
Get your San Francisco contractor bond quoteSources: BPC § 7071.6 · SF Public Works Code § 2.4.40 · sfpublicworks.org · cslb.ca.gov