New York bathroom remodel: the DCWP HIC licence and the DOB General Contractor Registration stack — 'renovations and alterations of 1, 2, 3 and 4 family homes and individual apartment units require Home Improvement Contractors (HIC) license … in addition to General Contractor (GC) license' (DOB verbatim) — while the plumbing component answers to the DOB trade layer (Master Plumber on the official 'more than 30 types' list, inside the LIC41 written / LIC42 practical exam channel). Unregistered firms keep the tracking-number carve-out: limited work, pre-filing, workers' compensation and disability proof. Every claim sourced and dated.
NYC DCWP Home Improvement Contractor licence — scope with NO dollar threshold (verified absence) — DCWP application checklist verbatim: 'A person or business must have a Home Improvement Contractor license to do construction, repair, remodeling, or other home improvement work to any residential land or building in New York City' — including basements, driveways, fences, garages, landscaping, patios, porches, sidewalks, swimming pools, terraces and other improvements on land next to a home or apartment building. No dollar threshold appears anywhere in the DCWP text: the licence reaches the smallest job (verified absence over the checklist, the NYC Business portal, and the DOB pages read). S-NYC-HIC-CHECK
HIC and GC stack: renovations of 1–4 family homes and apartments need DCWP HIC IN ADDITION TO DOB GC — DOB residential registrant page verbatim: 'renovations and alterations of 1, 2, 3 and 4 family homes and individual apartment units require Home Improvement Contractors (HIC) license issued by the Department of Consumer Affairs in addition to General Contractor (GC) license.' The two credentials gate different things: DCWP licenses the price and the contract, DOB gates the permit and the trade. S-NYC-DOB-RES
DOB issues 'more than 30 types of licenses, registrations or certifications' — the named trade list — DOB Know Your Construction Professional page verbatim: 'The Department of Buildings issues more than 30 types of licenses, registrations or certifications' — the named list includes Elevator Inspection Agency Director and Inspector, High Pressure Boiler Operating Engineer, Hoisting Machine Operator, Master Electrician, Master Fire Suppression Piping Contractor, Master Plumber, Oil Burning Equipment Installer, Rigger, Sign Hanger, Site Safety Professional and Welder, plus Registrants (General Contractors) and Filing Representatives classes 1 and 2. Design professionals are different: 'Contact local industry organizations to find a State-licensed design professional' — engineers and architects are the state-licensed voices, contractors are not. S-NYC-DOB-KYC
Tracking-number carve-out: non-registered contractors may do limited work with pre-filing + insurance proof — DOB residential page verbatim: 'Non-registered Contractors may perform limited work that is assigned a tracking number, but must pre-file with the department and provide proof of Workers' Compensation and Disability Insurance.' The carve-out is limited work under a tracking number; the New Building permit path stays closed to them. S-NYC-DOB-RES
In New York City several rows read may_require at once: the DCWP licence and the DOB registration are stacked requirements, not alternatives (DOB verbatim: "in addition to").
03 Deterministic rules applied
NY-DCWP-HIC
NY-DOB-STACKING
NY-DOB-TRADE-LICENSES
NY-DOB-TRACKING-CARVEOUT
04 What it costs
Fee
Amount
Source
HIC new licence — filed March 1 to August 31 of an ODD year (covers ≤24 months)
New York State charges no fee for this work (verified absence). County licence fees, permit fees and the IdentoGO fingerprint fee are LOCAL_AUTHORITY_REQUIRED and are not published here.
05 What this page cannot tell you
Per-county figures — Suffolk, Nassau, Westchester, Putnam and Rockland license home improvement contractors (Attorney General verbatim), but every county fee, term and entry rule is withheld by name: the official county sources returned 403 this pass.
Which work skips the DOB permit — the checklist says "most home improvements need a DOB permit"; which do not is DOB's call, and the tracking-number carve-out exists precisely for the limited-work case.
Unresearched trade channels — the DOB issues more than 30 licence types; this chapter researched the plumbing, electrical and oil-burning channels by name. An unlisted trade may still apply to this project.