California CSLB General Manufactured Housing Contractor C-47 Attorney Fee Petition Mechanics: Tyler Odyssey Civil Complaint Date as Primary Welch Anchor, CSLB License Check (C-47 Specialty) as Secondary Anchor (THE ONLY C-47 General Manufactured Housing Contractor Specialty Page in This Series — ONLY Page With HUD Federal Manufactured Home Construction and Safety Standards Dual-Regulatory Advisory [CSLB C-47 License Absence + HCD Manufactured Home Installation Permit Absence — Two Searchable Institutional Databases]; ONLY Page With Title 25 Cal. Code Regs. §§ 4040–4090 Pier System, Tie-Down Anchoring, and Utility Connection Installation Standards Advisory; ONLY Page With Structural Pier Failure and Frame Distortion / HUD Installation Void Blocking FHA/VA Financing / Utility Connection Deficiency Three-Track Harm; Bus. & Prof. Code § 7031(b) Disgorgement), CLRA § 1780 Mandatory Attorney Fees
California Business and Professions Code § 7028 applies to every person who engages in the business of a contractor in California without holding a valid CSLB license. For the on-site installation, alteration, and repair of manufactured homes (factory-built homes constructed to HUD standards under the National Manufactured Housing Construction and Safety Standards Act, 42 U.S.C. §§ 5401–5426) on permanent or semi-permanent sites, the relevant specialty classification is C-47 (General Manufactured Housing Contractor), which authorizes manufactured home site preparation, foundation pier system construction, tie-down anchoring system installation, utility connection work, and skirting installation. C-47 manufactured housing contractor work intersects two distinct regulatory frameworks beyond the CSLB licensing requirement: (1) the HUD Federal Manufactured Home Construction and Safety Standards dual-regulatory advisory — 24 C.F.R. Parts 3285 and 3286 (Model Installation Standards and Installation Program) establish federal minimum installation requirements implemented in California by HCD under Health & Safety Code §§ 18300–18421.5; HCD requires a manufactured home installation permit (HCD Manufactured Housing database at hcd.ca.gov) for every manufactured home installation — creating a second searchable institutional database alongside the CSLB License Check; and (2) Title 25 Cal. Code Regs. §§ 4040–4090 (pier system, tie-down anchoring, and utility connection installation standards) — establishing specific technical requirements for pier type, spacing, height, and soil bearing; tie-down diagonal and vertical strap configurations in seismic zones; and water, sewer, and electrical utility crossover connections. THREE UNIQUE DISTINCTIONS: (1) THE ONLY page with HUD FEDERAL MANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDS DUAL-REGULATORY ADVISORY — CSLB C-47 license absence + HCD manufactured home installation permit absence — two searchable institutional databases; HCD Certificate of Installation absence blocks FHA/VA/Freddie Mac financing; HUD Manufactured Housing Act preempts state construction standards but preserves state installation authority; DISTINCT from B General Building Contractor [site-built homes; C-47 covers factory-built manufactured homes installed under HUD and Title 25 standards]; (2) THE ONLY page with TITLE 25 CAL. CODE REGS. §§ 4040–4090 PIER SYSTEM, TIE-DOWN ANCHORING, AND UTILITY CONNECTION INSTALLATION STANDARDS ADVISORY — pier type, spacing, height; SDC D seismic zone vertical hold-down; water/sewer crossover coupling type and placement; PURE KETCHUM — Title 25 administrative; HCD administrative; (3) THE ONLY page with STRUCTURAL PIER FAILURE AND FRAME DISTORTION / HUD INSTALLATION VOID BLOCKING FHA/VA FINANCING / UTILITY CONNECTION DEFICIENCY three-track harm. PURE KETCHUM: HUD Manufactured Housing Act preempts state construction codes for the home itself but does not create mandatory civil attorney fees for homeowners against unlicensed C-47 installers; HCD permit administrative; Title 25 administrative; CLRA § 1780 mandatory fee entitlement is pure Ketchum. Total billing gap: 13.25 hrs = $3,975–$6,625/yr.
TL;DR
Bus. & Prof. Code § 7028 requires CSLB C-47 specialty licensure for manufactured home site installation; unlicensed C-47 work activates the HUD/HCD dual-regulatory advisory (CSLB License Check + HCD Manufactured Housing permit database — two pre-complaint institutional anchors; HCD Certificate of Installation absence blocks FHA/VA/Freddie Mac financing — PURE KETCHUM administrative), the Title 25 §§ 4040–4090 pier system and tie-down anchoring standards advisory (THE ONLY PAGE with Title 25 manufactured housing installation standards advisory — pier spacing, SDC D vertical hold-down, sewer crossover coupling — PURE KETCHUM administrative), and the structural pier failure / HUD installation void blocking financing / utility connection deficiency three-track harm. Primary Welch anchor: Tyler Odyssey civil complaint date. Secondary anchor: CSLB License Check (C-47 specialty). ONLY page with HUD/HCD dual-regulatory advisory and Title 25 installation standards advisory. Bus. & Prof. Code § 7031(b) disgorgement. PURE KETCHUM — HUD, HCD, and Title 25 all administrative. 13.25 hrs = $3,975–$6,625/yr.
Statutory Framework: Bus. & Prof. Code § 7028, C-47 General Manufactured Housing Specialty, HUD/HCD Dual-Regulatory Advisory, Title 25 Installation Standards Advisory, § 7031(b) Disgorgement, and CLRA § 1780 Mandatory Attorney Fees
California Business and Professions Code § 7028 prohibits unlicensed contracting. The CSLB C-47 General Manufactured Housing Contractor classification authorizes manufactured home site preparation, foundation pier system installation, tie-down anchoring system installation, skirting installation, and utility connection work. Any person who performs C-47 work as a standalone trade for a contract price exceeding $500 in California without a valid C-47 license (or a B general building contractor license where manufactured housing installation is merely incidental to a larger site development project) violates § 7028. C-47 is distinct from B General Building Contractor (which covers site-built homes subject to state and local building codes rather than the HUD-regulated factory-built manufactured housing installation framework under 42 U.S.C. §§ 5401–5426 and Title 25).
The National Manufactured Housing Construction and Safety Standards Act (42 U.S.C. §§ 5401–5426), through HUD's implementing regulations at 24 C.F.R. Parts 3280 (Construction and Safety Standards), 3285 (Model Installation Standards), and 3286 (Installation Program), establishes federal minimum requirements for manufactured home installation. In California, the California Department of Housing and Community Development (HCD) administers the manufactured home installation program under Health & Safety Code §§ 18300–18421.5. HCD requires that all manufactured home installations in California be performed by a CSLB C-47 licensed contractor and that an HCD manufactured home installation permit be obtained before installation commences. After satisfactory installation, the HCD-approved installer submits an installation certification to HCD, which issues an HCD Certificate of Installation. The HCD Certificate of Installation is a permanent record in the HCD Manufactured Housing database at hcd.ca.gov — searchable by serial number, address, and installer. An unlicensed C-47 who installs without obtaining an HCD permit creates a permit void in the HCD Manufactured Housing database — the second institutional anchor unique to C-47 manufactured housing matters.
Title 25 Cal. Code Regs. §§ 4000 et seq. (California Manufactured Housing Regulations) establish specific technical requirements for manufactured home site installations. Pier system requirements (Title 25 §§ 4040–4046) specify pier type (concrete pier pads, adjustable pier systems, perimeter foundation systems), pier spacing (maximum pier spacing along the main chassis beam and the perimeter beam), and pier height limits (maximum unsupported pier height to prevent pier buckling). Anchoring and tie-down requirements (Title 25 §§ 4060–4068) specify the number and configuration of diagonal tie-down straps, the requirement for vertical hold-down straps in Seismic Design Category D zones (virtually all of California is SDC D per the CBC seismic zone map), and the ground anchor type approval requirements. Utility connection requirements (Title 25 §§ 4082–4090) specify water service connection, sewer crossover coupling type (required to be a listed flexible coupling — not a rigid threaded connection), electrical feeder service connection, and sewer cleanout placement.
Three Unique Distinctions in the Fee-Petition-Mechanics Series
- THE ONLY page with HUD FEDERAL MANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDS DUAL-REGULATORY ADVISORY — CSLB C-47 license absence + HCD manufactured home installation permit absence — two searchable institutional databases (CSLB License Check at cslb.ca.gov + HCD Manufactured Housing database at hcd.ca.gov); HCD Certificate of Installation absence blocks FHA, VA, and Freddie Mac/Fannie Mae manufactured home financing; DISTINCT from B General Building Contractor [site-built homes; C-47 covers HUD-regulated factory-built manufactured housing]: the HUD/HCD dual-regulatory advisory generates pre-complaint research hours unique to C-47 manufactured housing matters: (a) confirming C-47 license status through CSLB License Check — C-47 specialty classification presence or absence; B general building contractor license scope does not include stand-alone manufactured home installation contracts under the HUD and Title 25 regulatory framework; (b) searching the HCD Manufactured Housing database at hcd.ca.gov for the subject manufactured home's installation permit and Certificate of Installation records — HCD's database is searchable by manufactured home serial number (HUD label number printed on the HUD Certification Label attached to the end of each transportable section), by installation address, and by licensed installer; the absence of an HCD installation permit record and Certificate of Installation in the HCD database creates the second pre-complaint institutional violation unique to C-47 matters; (c) advising on the financing implications of the absent HCD Certificate of Installation — FHA Title II manufactured home mortgage programs (24 C.F.R. Part 203), VA manufactured home loan programs (38 C.F.R. § 36.4200 et seq.), and Freddie Mac CHOICEHome Mortgage program (Freddie Mac Selling Guide Chapter 5701) all require verification that the manufactured home has a current HCD Certificate of Installation as a condition of lending on homes titled as real property; an absent HCD Certificate of Installation means that the current homeowner cannot refinance with an FHA, VA, or Freddie Mac loan — the financing capacity impairment (difference between market rate conventional loan and alternative financing terms for a home without FHA/VA eligibility) is a recoverable CLRA actual damages component unique to C-47 HCD permit void matters; (d) advising on the Manufactured Housing Act preemption analysis — 42 U.S.C. § 5403(d) preempts state standards for manufactured home construction and design (the factory-built home itself), but § 5403(d)(2) expressly preserves state authority to regulate manufactured home installation; California's Title 25 installation requirements are valid state installation regulations — PURE KETCHUM for the federal Manufactured Housing Act (the Act creates no mandatory civil attorney fees for homeowners against unlicensed C-47 installers); the CLRA § 1780 mandatory attorney fee entitlement against the unlicensed C-47 contractor is pure Ketchum; (e) the HUD/HCD dual-regulatory advisory is THE ONLY PAGE in the fee-petition-mechanics series applying the federal Manufactured Housing Act + California HCD administration dual-regulatory framework to specialty contractor licensing violations — distinct from B General Building Contractor (which covers site-built homes subject to local building codes rather than HUD standards), distinct from C-36 Plumbing (which covers general plumbing systems in site-built or manufactured homes rather than the manufactured housing-specific Title 25 utility crossover connections).
- THE ONLY page with TITLE 25 CAL. CODE REGS. §§ 4040–4090 MANUFACTURED HOME PIER SYSTEM, TIE-DOWN ANCHORING, AND UTILITY CONNECTION INSTALLATION STANDARDS ADVISORY — pier type, spacing, and height limits; SDC D seismic zone vertical hold-down strap requirements; sewer crossover flexible coupling type; HCD-required sewer cleanout placement; PURE KETCHUM — Title 25 is administrative HCD enforcement; no mandatory civil attorney fees from Title 25 violations alone: the Title 25 installation standards advisory generates pre-complaint research hours unique to C-47 manufactured housing installation matters: (a) advising on pier system requirements under Title 25 §§ 4040–4046 — the attorney must obtain the manufactured home manufacturer's installation manual (required to be provided with every manufactured home under 24 C.F.R. Part 3285) and compare the as-installed pier configuration against the manufacturer's installation instructions and Title 25 pier type, spacing, and height requirements; pier underrun (spacing exceeding the manufacturer's maximum pier spacing) creates a main chassis beam bending stress concentration that over time causes frame deflection and door/window bind; Title 25 § 4042 limits pier height for standard concrete pier pads to 36 inches — piers installed higher than 36 inches require stabilizing devices; (b) advising on tie-down anchoring requirements under Title 25 §§ 4060–4068 — California is in Seismic Design Category D (SDC D) for virtually all inhabited areas; Title 25 § 4063 requires vertical hold-down straps in SDC D zones in addition to the diagonal tie-down straps required in all zones; an unlicensed C-47 who installs only diagonal tie-down straps without the required SDC D vertical hold-downs creates a seismic anchoring deficiency; vertical hold-down straps prevent the manufactured home from lifting off its pier pads during a seismic event — frame uplift during a seismic event causes the main chassis beam to separate from the pier pads and can damage utility connections; (c) advising on sewer crossover coupling requirements — Title 25 § 4089 requires a listed flexible coupling (ABS or PVC bellows-type flexible coupling — not a threaded rigid coupling) at the manufactured home's drain stub-out to accommodate the differential settlement between the manufactured home frame and the site sewer connection; a threaded rigid sewer connection that does not flex with differential settlement eventually cracks at the stub-out joint, causing sewage backup under the manufactured home; (d) advising on HCD-required sewer cleanout placement — Title 25 § 4089 requires a sewer cleanout accessible within 5 feet of the manufactured home's drain stub-out; an unlicensed C-47 who fails to install the required cleanout creates a maintenance violation that prevents access to the drain system for rooter service without excavation; (e) the Title 25 installation standards advisory is THE ONLY PAGE in the fee-petition-mechanics series applying manufactured housing-specific pier system, tie-down, and utility crossover standards to specialty contractor licensing violations.
- THE ONLY page with STRUCTURAL PIER FAILURE AND FRAME DISTORTION / HUD INSTALLATION VOID BLOCKING FHA/VA FINANCING / UTILITY CONNECTION DEFICIENCY three-track harm — DISTINCT from B General Building Contractor three-track harm [site-built home framing, foundation, and MEP deficiencies; C-47 covers manufactured home pier settlement, HCD financing void, and flexible sewer crossover coupling failure]: Track 1 — STRUCTURAL PIER FAILURE AND FRAME DISTORTION: an unlicensed C-47 who installs manufactured home piers with spacing exceeding the manufacturer's maximum pier spacing causes the main chassis beam to sag between pier points under the manufactured home's dead load; progressive pier settlement (especially on expansive soils — Type CH or CL soils common in the San Joaquin Valley, Sacramento Valley, and Southern California Inland Empire) causes differential pier settlement, which loads the main chassis beam asymmetrically and causes the home frame to rack; racking damage manifests as: doors and windows that no longer open and close smoothly (frame racking creates out-of-square door and window openings); interior drywall cracking at door and window corners; exterior panel separation at seam joints; roof membrane stress cracking; CLRA actual damages for pier system correction include pier re-leveling, pier pad replacement, soil stabilization ($2,000–$10,000+), and in severe racking cases, structural frame straightening by a licensed manufactured housing installer; Track 2 — HUD INSTALLATION VOID BLOCKING FHA/VA FINANCING: an HCD Manufactured Housing database void (no HCD installation permit + no Certificate of Installation) means the manufactured home cannot be financed with FHA Title II, VA, or Freddie Mac CHOICEHome Mortgage programs; the homeowner who paid cash for the installation and now seeks to refinance — or the homeowner who is trying to sell the manufactured home to a buyer seeking FHA/VA financing — faces a financing capacity impairment; the cost to cure the HCD permit void (engaging a CSLB C-47 licensed installer to obtain a retroactive HCD installation permit, conduct a new installation inspection, and obtain an HCD Certificate of Installation) is $1,500–$5,000+; the financing cost differential (difference between market rate FHA/VA rate and the higher rate available without FHA/VA eligibility) is a quantifiable, ongoing CLRA actual damage component; Track 3 — UTILITY CONNECTION DEFICIENCY: improper sewer crossover coupling type (threaded rigid vs. listed flexible coupling per Title 25 § 4089) causes coupling fracture at the drain stub-out joint during differential settlement, resulting in sewage backup under the manufactured home floor; sewage backup under the home contaminates the sub-floor insulation (requires complete removal and replacement), creates mold growth in the sub-floor cavity, and can saturate and delaminate the manufactured home floor decking; IICRC S500 Category 3 sewage contamination remediation under the manufactured home floor system ($3,000–$15,000+ including sub-floor access, insulation removal, biocide treatment, and insulation reinstallation) is recoverable as CLRA actual damages.
PURE KETCHUM for Bus. & Prof. Code § 7028 C-47 General Manufactured Housing Contractor licensing violations: the HUD Manufactured Housing Act (42 U.S.C. §§ 5401–5426) preempts state construction standards for the manufactured home factory construction — the Act creates no mandatory civil attorney fees for homeowners against unlicensed C-47 site installers in a CLRA § 1780 action; the HCD manufactured home installation permit requirement under Health & Safety Code §§ 18300–18421.5 is California administrative enforcement — no mandatory civil attorney fees from permit absence alone; Title 25 Cal. Code Regs. §§ 4040–4090 installation standards are California administrative enforcement — no mandatory civil attorney fees from Title 25 violations alone; the CLRA § 1780 mandatory attorney fee entitlement against the unlicensed C-47 contractor 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. In C-47 manufactured housing matters, the attorney files after confirming the C-47 license status, conducting the HUD/HCD dual-regulatory advisory (CSLB License Check + HCD Manufactured Housing database search), reviewing the Title 25 pier system and tie-down configuration against manufacturer's installation instructions, engaging a licensed manufactured housing inspector to evaluate the installation, quantifying CLRA damages across all three harm tracks, and serving the CLRA § 1782 demand. The CSLB C-47 License Check date is the secondary Welch anchor.
Secondary Anchor: CSLB License Check (C-47 General Manufactured Housing Specialty) — THE ONLY C-47 Specialty Anchor in the Fee-Petition-Mechanics Series
The CSLB License Check must confirm the C-47 General Manufactured Housing specialty — distinct from B (General Building Contractor, site-built homes). Three scenarios generate § 7028 liability: (a) no CSLB license; (b) B-license without C-47 for standalone manufactured housing installation contracts; (c) expired, suspended, or revoked C-47 license. This page is THE ONLY C-47 General Manufactured Housing Contractor specialty anchor in the fee-petition-mechanics series.
Billing Gap 1 — CSLB License Check (C-47 Specialty), HCD Manufactured Housing Database Search, Title 25 Installation Standards Review, Licensed Manufactured Housing Inspector Engagement, and § 1782 Demand (5.25 hrs/yr = $1,575–$2,625)
The first billing gap covers pre-complaint advisory: C-47 licensing confirmation, HCD database search, Title 25 installation standards review, manufactured housing inspector engagement, and CLRA § 1782 demand.
- Searching CSLB License Check for C-47 specialty and establishing the secondary Welch anchor: confirming C-47 presence or absence; advising on B general building contractor license scope vs. standalone C-47 manufactured housing.
- Searching the HCD Manufactured Housing database at hcd.ca.gov for the subject manufactured home's installation permit and Certificate of Installation records: confirming HCD permit and Certificate of Installation presence or absence; documenting the second institutional anchor; advising on FHA/VA financing capacity impairment from HCD void.
- Reviewing Title 25 §§ 4040–4090 installation standards against the as-installed configuration — pier type, spacing, and height; SDC D vertical hold-down strap presence; sewer crossover coupling type; sewer cleanout placement: Title 25 standards review documents specific installation deficiencies for the Ketchum novelty/difficulty multiplier.
- Engaging a licensed manufactured housing inspector to evaluate pier settlement, frame level, tie-down anchoring, and utility connection adequacy: the inspector's preliminary assessment documents Track 1 structural harm and Track 3 utility connection deficiency.
- Quantifying § 7031(b) disgorgement and CLRA damages (pier correction, HCD cure cost, sewer coupling replacement, sewage remediation) and serving § 1782 demand: manufactured home installation contracts range from $5,000 to $25,000+.
Billing Gap 2 — Active Litigation: Licensed Manufactured Housing Inspector, HCD Retroactive Permit Cost Quantification, IICRC S500 Sewage Remediation Expert, and Three-Track Damage Quantification (4.00 hrs/yr = $1,200–$2,000)
The second billing gap covers expert coordination across the three harm tracks.
- Retaining a licensed manufactured housing inspector — to conduct a full Title 25 installation inspection: survey pier settlement and frame level, verify tie-down configuration against SDC D requirements, identify rigid sewer crossover coupling vs. required flexible coupling, and estimate the cost to bring the installation into Title 25 compliance: the inspector documents Track 1 pier failure and Track 3 utility deficiency as CLRA actual damages.
- Engaging a CSLB C-47 licensed installer to obtain a retroactive HCD installation permit, conduct HCD-required inspection, and obtain an HCD Certificate of Installation: the HCD cure cost (licensed C-47 fee, HCD permit fee, and any required installation corrections to pass HCD inspection) is recoverable as CLRA actual damages for Track 2 HUD installation void.
- Retaining an IICRC S500 certified water damage and sewage remediation contractor — to assess and remediate Category 3 sewage contamination under the manufactured home floor from the cracked rigid sewer crossover coupling; quantify sub-floor insulation removal, biocide treatment, mold assessment, and insulation reinstallation cost: the IICRC S500 Category 3 remediation cost is recoverable as Track 3 CLRA actual damages.
- Quantifying FHA/VA financing capacity impairment — researching current FHA/VA manufactured home mortgage rates vs. alternative chattel loan rates available without FHA/VA eligibility: the financing rate differential as an ongoing CLRA actual damage component unique to C-47 HCD Certificate void matters.
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 C-47 harm tracks.
- Documenting the CLRA § 1780 lodestar from the CSLB C-47 License Check date: HCD Manufactured Housing database search hours, Title 25 installation standards review hours, manufactured housing inspector coordination hours, HCD retroactive permit coordination hours, IICRC remediation expert coordination hours, and FHA/VA financing impairment analysis hours — all fee-petition-eligible.
- Briefing the pure Ketchum multiplier: novelty/difficulty — HUD Manufactured Housing Act federal preemption analysis (42 U.S.C. § 5403(d) preemption scope vs. state installation authority preservation), HCD administrative framework (Health & Safety Code §§ 18300–18421.5; HCD Certificate of Installation process), Title 25 installation standards analysis (pier system, SDC D tie-down, flexible sewer coupling), FHA/VA financing capacity impairment quantification, and three-track structural/financing/utility damages integration; Ketchum v. Moses 24 Cal.4th 1122 (2001).
- Missouri v. Jenkins fees-on-fees for the fee petition: Missouri v. Jenkins 491 U.S. 274 (1989).
Total Annual Billing Gap — Three-Gap Summary
- Gap 1 (C-47 CSLB search, HCD database search, Title 25 standards review, manufactured housing inspector engagement, § 1782 demand): 5.25 hrs = $1,575–$2,625/yr
- Gap 2 (manufactured housing inspector, HCD retroactive permit, IICRC sewage remediation, FHA/VA financing impairment): 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
How ClaimHour fits California Bus. & Prof. Code § 7028 C-47 / CLRA § 1780 manufactured housing contractor practice
For solo California plaintiff attorneys handling Bus. & Prof. Code § 7028 C-47 General Manufactured Housing Contractor matters — including CSLB License Check advisory, HUD/HCD dual-regulatory advisory, Title 25 pier and tie-down standards review, manufactured housing inspector coordination, HCD Certificate of Installation cure cost quantification, § 7031(b) disgorgement analysis, and pure Ketchum multiplier briefing — ClaimHour captures all advisory sessions in the background without a separate practice management system.
Get Early AccessRelated California Attorney Fee Petition Pages
- California CSLB Concrete Contractor C-8 — Bus. & Prof. Code § 7028 (CBC Concrete; Special Inspection)
- California CSLB Plumbing Contractor C-36 — Bus. & Prof. Code § 7028 (CPC Intrabuilding Gas Piping; CalGreen; Lead-Free Plumbing)
- California CSLB Sanitation System Contractor C-42 — Bus. & Prof. Code § 7028
- California Contractors State License Board — Bus. & Prof. Code § 7028 (General CSLB Unlicensed Contracting)