California CSLB Prefabricated Equipment Contractor D-34 / C-61 Attorney Fee Petition Mechanics: Tyler Odyssey Civil Complaint Date as Primary Welch Anchor, CSLB License Check (D-34 / C-61) as Secondary Anchor (THE ONLY D-34 Prefabricated Equipment Page in This Series — ONLY Page With AISI S100 Cold-Formed Steel Framing Private Standard Advisory [THE ONLY PAGE in the Fee-Petition-Mechanics Series With an AISI S100 Advisory — PURE KETCHUM] and ICC-ES AC13 Modular Unit Structural Advisory [THE ONLY PAGE with ICC-ES AC13 Advisory]; AHJ Building Permit Records as Second Institutional Anchor; Anchor Bolt Failure Structural Collapse / Improper Utility Connection Carbon Monoxide Hazard / Unlevel Modular Unit Habitability Defect Three-Track Harm; Bus. & Prof. Code § 7031(b) Disgorgement), CLRA § 1780 Mandatory Attorney Fees

Statutory Framework: Bus. & Prof. Code § 7028, D-34 / C-61 Prefabricated Equipment, AISI S100 Advisory, ICC-ES AC13 Advisory, AHJ Building Permit Advisory, § 7031(b) Disgorgement, and CLRA § 1780 Mandatory Attorney Fees

California Business and Professions Code § 7028 prohibits unlicensed contracting. The CSLB D-34 (Prefabricated Equipment) limited specialty designation under C-61 authorizes site installation of factory-built prefabricated structures and equipment units: modular office buildings and construction trailers; portable classroom units (California DSA-approved or non-DSA portable buildings); prefabricated equipment enclosures and shelters; modular restroom buildings; prefabricated guard booths and security kiosks; and similar factory-assembled units delivered to site for installation on a prepared foundation. D-34 site installation includes anchor bolt placement and torquing, unit leveling and shimming on piers or concrete pads, utility connection (electrical service entrance connection, plumbing drain and supply stub-out connection, mechanical HVAC duct connection), skirting installation, and AHJ inspection documentation.

AISI S100 (North American Specification for the Design of Cold-Formed Steel Structural Members) is a private standard published by the American Iron and Steel Institute — NOT a California statute. AISI S100 governs cold-formed steel member design in prefabricated modular building structures, including effective width methodology for local buckling, screw connection shear and tension values, and anchor bolt design for seismic and wind resistance. PURE KETCHUM: AISI S100 creates no private civil right of action and no mandatory attorney fee-shifting mechanism. ICC-ES AC13 (Acceptance Criteria for Prefabricated Buildings) is a private ICC-ES acceptance criteria document governing the basis for ICC-ES ESR evaluation reports on prefabricated modular units — not a California statute. AHJ building permit records constitute the second institutional anchor, confirming permit issuance and inspection history for the prefabricated unit site installation.

Three Unique Distinctions in the Fee-Petition-Mechanics Series

• THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES with AISI S100 COLD-FORMED STEEL FRAMING PRIVATE STANDARD ADVISORY — AISI S100 current edition; cold-formed steel member effective width under local buckling (Method of Sections); screw connection design (AISI S100 Section J4, nominal shear strength per screw based on steel thickness ratio); anchor bolt design for California Seismic Design Category D and E (ASCE 7-22 Table 11.6-1); wind uplift design for coastal exposure categories; PURE KETCHUM — AISI S100 is a private AISI trade association standard, not a California statute, not California administrative code, not a federal regulation — it creates no private civil right of action and no mandatory attorney fee-shifting mechanism; structural collapse damages from anchor bolt failure are recoverable as CLRA actual damages: the AISI S100 advisory generates pre-complaint research hours unique to D-34 prefabricated equipment matters: (a) confirming CSLB C-61/D-34 license status at contractors.ca.gov; (b) reviewing AHJ building permit records for prefabricated unit installation permit — confirming whether a permit was required for the unit installation based on occupancy type, floor area, and permanence; (c) reviewing the manufacturer's ICC-ES ESR report or approved engineering for the specific unit model — confirming anchor bolt type (cast-in-place or post-installed anchor), diameter, embedment depth, spacing, and torque specification per AISI S100 anchor design or the ESR installation instructions; (d) inspecting installed anchor bolt pattern — measuring bolt diameter, spacing, and embedment depth at exposed anchor bolt locations; confirming seismic tie-down clip installation at each end wall; (e) confirming anchor bolt torque documentation in the contractor's installation log — seismic anchor bolt torque is required to be documented at installation; (f) quantifying structural collapse or displacement damages as CLRA actual damages.
• THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES with ICC-ES AC13 MODULAR UNIT STRUCTURAL ADVISORY — ICC-ES AC13 current edition; prefabricated building structural analysis scope; diaphragm and shear wall CBC compliance; transportation load design (shock and vibration for delivery); seismic tie-down design per CBC; utility connection provisions in the ICC-ES ESR report; PURE KETCHUM — ICC-ES AC13 is a private ICC-ES acceptance criteria document, not a California statute, not California administrative code — it creates no private civil right of action and no mandatory attorney fee-shifting mechanism; site installation deficiencies that void the ESR report's installation compliance create CLRA actual damages (structural repair cost, permit remediation cost): the ICC-ES AC13 advisory generates independent research: (a) obtaining the ICC-ES ESR evaluation report number for the specific prefabricated unit model (from manufacturer's literature or ICC-ES online database at icc-es.org); (b) reviewing the ESR report's Section 4 (Installation) for the required anchor bolt pattern, seismic tie-down clip specification, and utility connection requirements; (c) comparing the ESR installation requirements against the as-installed conditions — confirming compliance or noncompliance; (d) confirming whether the unit required DSA approval (for public school modular classrooms under California Education Code § 17280) or HCD approval (for modular housing units under California Health and Safety Code § 19990); (e) documenting permit and approval failures that expose the property owner to AHJ enforcement action (notice of violation, stop-work order, abatement requirement).
• THE ONLY page with ANCHOR BOLT FAILURE FROM INCORRECT EMBEDMENT DEPTH SEISMIC LATERAL DISPLACEMENT STRUCTURAL COLLAPSE / IMPROPER GAS OR ELECTRICAL UTILITY CONNECTION CARBON MONOXIDE OR ELECTRICAL SHOCK HAZARD / UNLEVEL MODULAR UNIT FROM MISSING SHIMS HABITABILITY DEFECT AND DOOR AND WINDOW BINDING three-track harm: Track 1 — ANCHOR BOLT FAILURE FROM INCORRECT EMBEDMENT DEPTH → SEISMIC LATERAL DISPLACEMENT → STRUCTURAL COLLAPSE: an unlicensed D-34/C-61 who installs anchor bolts at insufficient embedment depth (less than manufacturer's ESR-specified minimum — typically 3.5 to 6 inches for 5/8-inch diameter anchors in 3,000 PSI concrete pad) creates anchor connections that do not achieve the design ultimate tensile and shear strength; under California Seismic Design Category D or E lateral forces (0.4g to 0.5g peak ground acceleration in Los Angeles, San Francisco Bay Area, and Central Valley seismic zones), insufficient anchor bolt embedment causes anchor pullout — the prefabricated unit slides off its foundation pad, causing structural collapse of the unit and potential injury to occupants; Track 2 — IMPROPER GAS OR ELECTRICAL UTILITY CONNECTION → CARBON MONOXIDE ACCUMULATION OR ELECTRICAL SHOCK HAZARD: an unlicensed D-34/C-61 who connects a modular building's gas supply stub-out to site gas service without a licensed plumber's involvement for the gas connection, or who makes the service entrance electrical connection to the site panel without a C-10 licensed electrician, creates: (a) gas connection leaks from improper flare or threaded fitting connections → natural gas accumulation → ignition hazard or carbon monoxide accumulation from incomplete combustion in appliances; (b) electrical connection deficiencies from incorrect service entrance wiring, improper grounding, or missing surge protection → electrical shock hazard for occupants; Track 3 — UNLEVEL MODULAR UNIT FROM MISSING SHIM STACKS → STRUCTURAL RACKING → DOOR AND WINDOW BINDING AND HABITABILITY DEFECT: an unlicensed D-34/C-61 who places a prefabricated modular unit on a concrete pad or pier foundation without adequate leveling (missing shim stacks at intermediate pier locations, or shim stacks installed with more than the manufacturer's allowable shimming height) creates a unit that is not level — the structural racking from unlevel bearing causes: (a) door and window frames to rack out of plumb, causing doors and windows to bind and not close properly; (b) wall panel joints to open at top or bottom, creating gaps in the building envelope (weather infiltration, pest intrusion); (c) plumbing drain lines to not achieve adequate gravity drainage slope (minimum 1/4 inch per foot for 2-inch drain; 1/8 inch per foot for 3-inch drain) — causing drain backup in modular building lavatories and kitchenettes; habitability defects constitute CLRA actual damages.

PURE KETCHUM for Bus. & Prof. Code § 7028 D-34 / C-61 Prefabricated Equipment violations: AISI S100 is a private AISI standard — no private civil right of action, no mandatory attorney fee-shifting; ICC-ES AC13 is a private ICC-ES acceptance criteria document — PURE KETCHUM; CBC Title 24 Part 2 is administrative; California DSA (Education Code § 17280) and HCD (Health and Safety Code § 19990) factory-built housing approvals are administrative enforcement; CLRA § 1780 mandatory attorney fee entitlement is pure Ketchum; Ketchum v. Moses 24 Cal.4th 1122 (2001); PLCM Group Inc. v. Drexler 22 Cal.4th 1084 (2000); Hensley v. Eckerhart 461 U.S. 424 (1983); Missouri v. Jenkins 491 U.S. 274 (1989) fees-on-fees.

Primary Welch Anchor: Tyler Odyssey Civil Complaint Filing Date

The Tyler Odyssey civil complaint filing date is the primary Welch temporal anchor for D-34 prefabricated equipment matters. The attorney files after confirming CSLB C-61/D-34 license status, searching AHJ building permit records, reviewing the manufacturer's ICC-ES ESR report installation requirements, documenting anchor bolt installation deficiencies, confirming utility connection compliance failures, quantifying CLRA damages across all three harm tracks, and serving the CLRA § 1782 demand. The CSLB D-34/C-61 License Check date is the secondary Welch anchor. Ketchum v. Moses 24 Cal.4th 1122 (2001); PLCM Group Inc. v. Drexler 22 Cal.4th 1084 (2000).

Secondary Anchor: CSLB License Check (D-34 / C-61 Prefabricated Equipment) — THE ONLY D-34 Specialty Anchor in the Fee-Petition-Mechanics Series

The CSLB License Check must confirm the C-61/D-34 Prefabricated Equipment limited specialty designation. Three scenarios generate § 7028 liability: (a) no CSLB license at all; (b) expired, suspended, or revoked C-61/D-34 license; (c) a contractor with a different CSLB classification who performs prefabricated equipment installation outside their classification scope. This page is THE ONLY D-34 Prefabricated Equipment specialty anchor in the fee-petition-mechanics series.

Billing Gap 1 — CSLB D-34/C-61 License Check, AHJ Building Permit Records, ICC-ES ESR Report Review, and § 1782 Demand (5.25 hrs/yr = $1,575–$2,625)

The first billing gap covers pre-complaint advisory for D-34 prefabricated equipment matters.

• Searching CSLB License Check for C-61/D-34 designation and establishing the secondary Welch anchor: confirming D-34 limited specialty presence or absence; evaluating whether utility connections required separate C-10, C-36, or C-20 specialty contractor involvement beyond D-34 scope.
• Reviewing AHJ building permit records — second institutional anchor: confirming whether a building permit was required for prefabricated unit site installation; confirming inspection records for anchor bolt torque documentation, utility connection inspection, and final occupancy approval.
• Reviewing manufacturer's ICC-ES ESR report — confirming installation requirement compliance: obtaining the ESR report for the specific unit model; reviewing Section 4 installation requirements for anchor bolt pattern, seismic tie-down clip specification, shimming limits, and utility connection provisions; comparing against as-installed conditions.
• Documenting anchor bolt installation deficiencies under AISI S100 and ESR report requirements: measuring installed anchor bolt diameter and spacing; confirming embedment depth at exposed anchor locations; confirming seismic tie-down clip installation; reviewing installation log for anchor bolt torque documentation.
• Documenting unit level — confirming habitability defect from unlevel installation: measuring floor level at unit corners and mid-span; confirming door and window operation; measuring plumbing drain slope in kitchenette or restroom.

Billing Gap 2 — Active Litigation: Structural Engineer, Mechanical/Electrical Expert, and Three-Track Damage Quantification (4.00 hrs/yr = $1,200–$2,000)

The second billing gap covers expert coordination across the three D-34 harm tracks.

• Retaining a structural engineer — to confirm Track 1 anchor bolt failure potential under AISI S100 design requirements and California seismic loading, and to evaluate Track 3 structural racking from unlevel installation: structural engineer performs anchor bolt pullout capacity calculation per AISI S100 and ESR report; evaluates seismic lateral force demand vs. installed anchor capacity; confirms structural racking from unlevel bearing and cost of leveling remediation.
• Retaining a licensed plumber and licensed electrician — to document Track 2 utility connection deficiencies (gas line leaks, grounding failures, improper service entrance wiring): plumber pressure-tests gas connection and documents any leakage; electrician inspects service entrance connection, grounding system, and documents deficiencies in licensed contractor's remediation report.
• Coordinating with a carbon monoxide detection expert or industrial hygienist if CO hazard materialized from improper gas connection: if occupants experienced CO exposure symptoms, industrial hygienist documents CO levels, sources, and exposure duration; medical records for CO exposure symptoms as CLRA actual damages.
• Settlement valuation incorporating all three harm tracks and CLRA § 1780 mandatory attorney fees: D-34 multi-track settlement demand integrates structural repair, utility connection remediation, relocation costs during habitability remediation, and personal injury costs.

Billing Gap 3 — CLRA § 1780 Fee Petition, Pure Ketchum Multiplier, Lodestar Documentation, and Missouri v. Jenkins Fees-on-Fees (4.00 hrs/yr = $1,200–$2,000)

The third billing gap covers fee recovery preparation across all three D-34 harm tracks.

• Documenting the CLRA § 1780 lodestar from the CSLB D-34/C-61 License Check date: AHJ building permit records search hours, ICC-ES ESR report review hours, AISI S100 anchor bolt design analysis hours, structural engineer coordination hours, utility connection expert coordination hours, industrial hygienist coordination hours — all fee-petition-eligible.
• Briefing the pure Ketchum multiplier: novelty/difficulty — AISI S100 cold-formed steel anchor bolt design analysis (embedment depth, bolt diameter, seismic uplift and shear capacity); ICC-ES AC13 acceptance criteria analysis (ESR report installation section interpretation; factory compliance vs. site installation compliance distinction); California seismic design category analysis for modular unit anchor design (CBC Section 1613; ASCE 7-22 Table 11.6-1); DSA and HCD factory-built housing approval administrative framework; Ketchum v. Moses 24 Cal.4th 1122 (2001); PLCM Group Inc. v. Drexler 22 Cal.4th 1084 (2000).
• Missouri v. Jenkins fees-on-fees for the fee petition: Missouri v. Jenkins 491 U.S. 274 (1989); Hensley v. Eckerhart 461 U.S. 424 (1983).

Total Annual Billing Gap — Three-Gap Summary

• Gap 1 (D-34 CSLB search, AHJ permit review, ICC-ES ESR report review, anchor bolt assessment, unit level confirmation): 5.25 hrs = $1,575–$2,625/yr
• Gap 2 (structural engineer, utility connection expert, industrial hygienist, three-track damage quantification): 4.00 hrs = $1,200–$2,000/yr
• Gap 3 (CLRA § 1780 fee petition, pure Ketchum multiplier, lodestar documentation, fees-on-fees): 4.00 hrs = $1,200–$2,000/yr
• Total: 13.25 hrs = $3,975–$6,625/yr untracked at $300–$500/hr median California solo practitioner rate

Related California Attorney Fee Petition Pages

• California CSLB General Building Contractor B — Bus. & Prof. Code § 7028
• California CSLB Concrete Contractor C-8 — Bus. & Prof. Code § 7028 (Foundation and Slab Work)
• California CSLB Concrete Related Services Contractor D-6 / C-61 — Bus. & Prof. Code § 7028
• California Contractors State License Board — Bus. & Prof. Code § 7028 (General CSLB Unlicensed Contracting)