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Licensed under Class B (General Building)

Garage Conversions in Irwindale, CA — CSLB-Licensed Contractors

Find CSLB-licensed garage conversion contractors in Irwindale, CA. Every listing shows an active licence number you can check yourself.

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What to Expect from Garage Conversions in Irwindale

Converting a garage in Irwindale is mostly a question of what the space is missing. A garage has a slab, walls and a roof already, which is why it looks cheap on paper. What it usually lacks is insulation, a moisture barrier under the floor, ceiling height, egress windows, heating, and enough electrical capacity to be a room people live in.

The slab is the first thing to check. Garage slabs are often poured lower than the house floor and slope toward the door for drainage, so the floor has to be raised and levelled before anything else happens. That single decision drives ceiling height, which drives whether the conversion is legal at all.

Ask any contractor what they intend to do about the driveway apron and the old garage door opening. A conversion that still reads as a garage from the street will cost you at resale, and the fix is cheaper designed in than added later.

  • Raising and levelling the slab to house floor height
  • Insulation, vapour barrier and weatherproofing
  • Egress windows and natural light
  • Electrical capacity, circuits and heating
  • Plumbing where a bathroom or kitchenette is added
  • Exterior treatment of the old door opening

Why CSLB Licensing Matters

A garage conversion changes a non-habitable space into a habitable one, which pulls in structural, electrical, insulation and usually plumbing work at once. That is Class B (General Building) territory: CSLB defines a general building contractor as one whose work involves structures needing at least two unrelated trades.

Every contractor listed holds an active Class B (General Building) licence recorded at a Irwindale address, with the number linked to the CSLB record. Check it before design work is commissioned, because the drawings are where the money starts.

What the licence cannot tell you is whether they have taken a conversion through your local plan check. Garage conversions attract more scrutiny than most remodels because they add a dwelling or a bedroom, and rules on ceiling height, egress and replacement parking are applied locally and vary by parcel. Ask how many they have completed, in which cities, and whether any came back with corrections. A contractor who talks openly about a correction is describing normal practice.

Every licence number below links to its record at cslb.ca.gov, where you can confirm status and expiry yourself.

Licensed Garage Conversions Contractors in Irwindale

17 registered in Irwindale · 23,334 active CLEAR licences across Los Angeles County · page 3 of 973

182 Construction

BLOS ANGELES, CA 90063
CSLB 1108621
(818) 237 7489View profile

1980 Co LLC

B| C10MONROVIA, CA 91016
CSLB 1152691
(818) 489 6403View profile

1Barba General Contractor Inc

BSANTA CLARITA, CA 91387
CSLB 1126434
(818) 669 1724View profile

1St Call Building Solutions

BPALMDALE, CA 93550
CSLB 1087748
(323) 901 4832View profile

1St Century Builders Inc

BAGOURA HILLS, CA 91301
CSLB 811023
(818) 254 7183View profile

1St Choice Builders Inc

B| C21VAN NUYS, CA 91406
CSLB 1020056
(818) 433 4971View profile

1St Choice Construction & Restoration Inc

BGLENDALE, CA 91201
CSLB 1093047
(818) 370 1590View profile

1St Choice General Services Inc

BNORTH HILLS, CA 91434
CSLB 1016577
(818) 602 1501View profile

1St Class Builder

B| C-5LA PUENTE, CA 91744
CSLB 1023394
(626) 826 2319View profile

1St Home Construction Corp

BCITY OF INDUSTRY, CA 91746
CSLB 1070508
(626) 620 9751View profile

1St Innovative Constructions Inc

BLA CANADA, CA 91011
CSLB 1079306
(818) 497 2344View profile

1St Prime Design Contractors Inc

BTORRANCE, CA 90505
CSLB 862194
(310) 930 3505View profile

1St Rise

BLOS ANGELES, CA 90049
CSLB 1076618
(310) 600 3363View profile

1St Tech Restoration Inc

BTORRANCE, CA 90501
CSLB 1035009
(310) 328 6065View profile

2 - Big Crew Construction

BPASADENA, CA 91106
CSLB 920118
(323) 251 2615View profile

2 2 2 Builders

BCARSON, CA 90745
CSLB 859092
(310) 995 7082View profile

2 As Property Management & Remodel Corp

BCLAREMONT, CA 91711
CSLB 1102950
(909) 706 8892View profile

2 De Durango Inc

BPOMONA, CA 91767
CSLB 884989
(909) 518 0094View profile

2 Sons Construction

BCOVINA, CA 91723
CSLB 588400
(714) 681 3477View profile

2 W G Construction Inc

BLA CRESCENTA, CA 91214
CSLB 1114096
(213) 388 6884View profile

2010 Construction Co

BENCINO, CA 91416
CSLB 652109
(818) 632 2010View profile

203K Contractors Inc

BLOS ANGELES, CA 90043
CSLB 1112146
(323) 309 9722View profile

20TH Century Construction Inc

BCALABASAS, CA 91372
CSLB 827011
(818) 887 2084View profile

2 R B Builders Corp

A| BGLENDALE, CA 91222
CSLB 686830
(818) 599 9347View profile
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How to Get Started

  1. 1

    Check the licence

    Open the CSLB record from any listing below and confirm the licence is active and the classification matches the work. It takes seconds and it is the one thing you can verify without asking anyone.

  2. 2

    Call three recent references

    Ask each contractor for three jobs finished in the last year, then actually call them. Ask what went wrong and how it was handled — every project has something, and the answer tells you more than a list of successes.

  3. 3

    Tell us about the job

    Send us the scope and we will connect you. No account, no fee, and we do not sell your details on.

Licence first. References second. Reviews last. Why that order.

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Related Services in Irwindale

These sit under the same Class B (General Building) licence, so the same contractors are qualified for them.

  • Find a licensed adu contractors contractor in Irwindale
  • Find a licensed general contractors contractor in Irwindale
  • Find a licensed second-story additions contractor in Irwindale
  • Find a licensed custom home builders contractor in Irwindale
  • Find a licensed tenant improvements contractor in Irwindale

Frequently Asked Questions

Can any garage be converted into living space?+

Not automatically. Ceiling height after the slab is raised, egress, light and ventilation all have to meet code, and your local planning rules decide whether replacement parking is required. Confirm with Building & Safety before committing to a design.

How many contractors can do garage conversions in Irwindale?+

The register lists 17 with an active Class B licence at a Irwindale address, and 23,334 across Los Angeles County. The classification covers conversions along with other general building work, so the same firms appear on related pages.

Why does the floor have to be raised?+

Garage slabs are usually poured below the house floor and sloped toward the door so water runs out. Living space needs a level floor at house height with a moisture barrier under it, and raising it eats ceiling height — which is why height gets checked first.

Is a converted garage the same as an ADU?+

Not necessarily. A conversion can be a bedroom, an office or a full accessory dwelling unit, and the requirements differ sharply between them. Decide which you are building before drawings start, because it changes utilities, egress and the approval path.

Every contractor here holds an active CSLB licence

Check any licence yourself in one click. When you are ready, tell us about the job and we will connect you.

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