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B vs B-2 license: which contractor can take your job

Short answer

A B (General Building) license covers any building job that combines two or more unrelated trades besides framing, in homes or businesses, new or existing. A B-2 (Residential Remodeling) license covers remodels of an existing wood-frame home with three or more unrelated trades and no structural changes. Kitchens and baths can go to either. Additions, new homes, structural work and every commercial job need a B.

Rules checked Oct 18, 2026 against 5 CSLB and California code pages, listed below.

What a B license covers

B&P Code 7057 defines a B contractor as one whose main business is building structures "for the support, shelter, and enclosure of persons, animals, chattels, or movable property". The definition doesn't split homes from businesses, so a B can take a kitchen remodel, a new house or an office build-out.

As prime contractor, a B must be running a job with two or more unrelated trades other than framing and carpentry. For a one-trade job, it needs that trade's specialty license or a licensed sub. Fire sprinklers (C-16) and well drilling (C-57) always need that license or a licensed sub.

A "general B contractor" is shorthand for this license.

Source: CSLB, B General Building classification (B&P Code 7057), checked Oct 18, 2026

Check a Bay Area license

Name or license number. Each result links to the live CSLB record.

Searches active and lapsed Bay Area B and B-2 licenses. Other classes: search on CSLB.

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What a B-2 license covers

The B-2 class started Jan 1, 2021 (SB 1189). It covers improvements to an existing residential wood-frame structure, and each contract must include three or more unrelated trades.

  • No structural changes to load-bearing parts: foundations, load-bearing walls and roof structure are out.
  • New or extended electrical, plumbing or mechanical systems need the matching license or a licensed sub.
  • Fire protection (C-16), asbestos abatement (C-22) and well drilling (C-57) need that license or a licensed sub.
  • Existing homes only. No new buildings and no commercial space.

Source: CSLB, B-2 Residential Remodeling classification (B&P Code 7057.5), checked Oct 18, 2026

Which license fits the job

  • Kitchen remodel, same layout, 3+ trades

    B
    Yes
    B-2
    Yes

  • Bathroom remodel, 3+ trades

    B
    Yes
    B-2
    Yes

  • Remodel that removes a load-bearing wall

    B
    Yes
    B-2
    No

  • Home addition

    B
    Yes
    B-2
    No

  • New house or new detached ADU

    B
    Yes
    B-2
    No

  • Whole-house remodel with no structural change

    B
    Yes
    B-2
    Yes

  • Office, store or restaurant build-out

    B
    Yes
    B-2
    No

  • One trade only, such as a re-roof

    B
    Only with that C class or a licensed sub
    B-2
    No

Sources: CSLB, B General Building classification (B&P Code 7057), checked Oct 18, 2026; CSLB, B-2 Residential Remodeling classification (B&P Code 7057.5), checked Oct 18, 2026

How common each license is in the Bay Area

B-2 is still rare. In the CSLB file dated Oct 16, 2026, 248 of 17,869 active Bay Area licenses on our lists hold a B-2 without a B. Most contractors you'll meet hold a B, often with a few specialty classes beside it.

Every card on our city lists shows the classes from CSLB, so you can see before you call.

Source: CSLB Data Portal, Master List of Contractors, checked Oct 18, 2026

How to check which class a contractor holds

Open the license on CSLB's Check a License page and read Classifications. It lists every class on the license. If the job needs a B and the record shows only B-2, ask who will hold the contract. The steps are in how to verify a contractor license.

Sources: CSLB, Check a License, checked Oct 18, 2026; CSLB, license detail record (sample #1046239, opened after a search), checked Oct 18, 2026

Questions

What is a general B contractor?

A contractor with a B (General Building) license from CSLB. It can take any building job that combines two or more unrelated trades besides framing, residential or commercial (B&P Code 7057).

Can a B-2 contractor build an addition?

No. A B-2 may not touch foundations, load-bearing walls or roof structure, and an addition changes all three. Additions need a B.

Can a B-2 contractor remodel a kitchen?

Yes, in an existing wood-frame home, if the contract covers three or more unrelated trades. New or extended electrical, plumbing or mechanical lines need the matching license or a licensed sub.

Can a B-2 contractor do commercial work?

No. The B-2 class is limited to existing residential wood-frame structures. A store, office or restaurant build-out needs a B.

Is a B license better than a B-2?

Neither is a quality mark. A B covers more kinds of jobs. For a kitchen or bath with no structural change, a B-2 is allowed to take the contract.

Next steps on this site

Sources

  1. CSLB, B General Building classification (B&P Code 7057), checked Oct 18, 2026
  2. CSLB, B-2 Residential Remodeling classification (B&P Code 7057.5), checked Oct 18, 2026
  3. CSLB Data Portal, Master List of Contractors, checked Oct 18, 2026
  4. CSLB, Check a License, checked Oct 18, 2026
  5. CSLB, license detail record (sample #1046239, opened after a search), checked Oct 18, 2026

This guide explains public rules in plain words. It isn't legal advice. CSLB and the code sections above are the authority, and rules change.