J Z J B Cnst Inv
ADU builder based in Glendale. Licensed since 2016.
- License active
- No workers' comp: the business told the state it has no employees
19 jobs on Los Angeles permits, 2020 to 2026: 8 ADUs, 4 home additions, 4 panel upgrades, 2 remodels, 1 roofing job. 42nd most ADU permits of 271 contractors in Los Angeles.
What the public records show
From the state's license records and the city's permits, one question at a time.
| Question | Records show | Mark |
|---|---|---|
| Licensed? | License 1013600, active in the state's records on Sep 23, 2026General buildingNo complaints or citations on the board's public record. | Checks out |
| Workers' comp? | No workers' comp: the business told the state it has no employeesThis covers their crew if someone is hurt. It is not insurance for your home. | Ask them |
| In business? | Licensed since 2016 | |
| Jobs on record | 19 jobs on Los Angeles permits, 2020 to 2026: 8 ADUs, 4 home additions, 4 panel upgrades, 2 remodels, 1 roofing jobThey are based in Glendale. Work outside Los Angeles is not in these records.42nd most ADU permits of 271 licensed contractors in Los Angeles. That counts jobs, not quality.Our Los Angeles permit records cover September 2023 to September 2026. |
Records: the state license board and City of Los Angeles permits.
State license board record
Last checked Oct 4, 2026. This may have changed. Check it on CSLB.
No complaints or citations on the board's public record.
Source: California Contractors State License Board, checked Oct 4, 2026. Look up license 1013600 on CSLB
Cost and timing
All ADU jobs in Los Angeles: $35,000 to $120,000
Half of 9,338 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Detached ADUs in Los Angeles: $46,000 to $121,000 (3,485 permits)
- Garage conversions in Los Angeles: $30,000 to $65,000 (3,524 permits)
- Junior ADUs in Los Angeles: $20,000 to $50,000 (768 permits)
How to read this range
Contractors write a job value on the permit form, and the city uses it to set the permit fee. It is not the contract price, and it is often lower than what you pay. A quarter of the permits list less than this range, and a quarter list more. Use it to see if a quote is in the normal range.
Permit value (not a price)
Their typical permit lists $69,888 (half list more, half less)
That is the figure written on the permit form, which can be far from what you pay. What ADU jobs cost in Los Angeles.
Get 2 or 3 written quotes.
Permit timeline
Across Los Angeles, a ADU permit stays open about about 12 months, from permit to final inspection
This is not how long the crew works at your home: most of it is waiting for the inspection. Ask them how many days the work takes. Waiting for the permit adds about about 4 months. How long ADU jobs take.
Track record
6 jobs in the last 12 months, down from 8 the year before
Where they work most
- 900113 jobs
- 914052 jobs
- 913112 jobs
- 900652 jobs
- 900272 jobs
Jobs by kind of work
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
A row marked ×2 or more stands for that many similar jobs on one day in one ZIP code.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Aug 4, 2026 | AdditionGarage remodel addition - demolish existing rec room and deck on seco | 91405 | $100,000 |
| Apr 30, 2026 | AdditionMajor additon and remodel to (e) duplex to recreate (n) 3-story | 90011 | $700,000 |
| Apr 4, 2026 | AdditionNew one story ADU Addition to existing one-story Single-Family | 91311 | $40,000 |
| Apr 4, 2026 | ADUNew one story ADU Addition to existing one-story Single-Family | 91311 | $40,000 |
| Feb 22, 2026 | ADU(N) 1 STORY DETACHED ACCESSORY DWELLING UNIT PER GCS 66323(a)(2 | 90042 | $64,777 |
| Oct 17, 2025 | ADUBuilding D - (N) 2 Story Detached ADU ADU PER 12.22 (c) & (d) 4 | 90029 | $129,465 |
| May 20, 2025 | RemodelMajor additon and remodel to (e) duplex to recreate (n) 3-story duplex | 90011 | $700,000 |
| May 18, 2025 | ADU(n) 2-story accessory dwelling unit over 1-car garage per lamc 12.22 a | 90011 | $125,000 |
| May 7, 2025 | RemodelGarage remodel addition - demolish existing rec room and deck on second floor and replace with new… | 91405 | $100,000 |
| Mar 2, 2025 | ADU**ePlan** New dettached Accessory Dwelling Unit at rear of the lot per | 90065 | $76,374 |
| Feb 9, 2025 | ADUNew Detached 1- story ADU per GCS 65852.2(e)(1)(B) and LAMC 12.22 a33 | 90036 | $50,298 |
| Nov 5, 2024 | ADUConvert (e) rec room to accessory dwelling unit per ab 494 and sb 229 | 90027 | $2,000 |
| Oct 25, 2024 | AdditionConversion of garage to 1 story adu with addition adu per ca g | 90047 | $75,000 |
| Oct 25, 2024 | ADUConversion of garage to 1 story adu with addition adu per ca g | 90047 | $75,000 |
| Aug 21, 2023 | Reroof, 21 squares (2,100 sq ft)Re-roof with Class A or B roof covering material weighing less than 6 pounds per sq | 90027 | $48,200 |
| Sep 1, 2021 | Panel upgradeNew 2-story apartment building with a 800amp service and 8 unit panels | 91342 | not stated |
| Oct 6, 2020 | Panel upgradeNew 1,000 Amp Service (PS) for 10 "Small lot subdivision" for 10 new T | 90065 | not stated |
| Sep 15, 2020 | Panel upgrade (×2, same day)New 1,200 Amp Service (PS1) for 11 "Small lot subdivision" for 11 new | 91606 | not stated |
What to ask before you hire
About J Z J B Cnst Inv
- Ask who will do the work. Anyone they pay to work on your home must be covered by workers' comp.
- Ask what the warranty covers and for how long, in writing.
Worth asking any ADU builder
- Can you show me proof of liability insurance and your bond?
- Do you handle the plans, engineering and utility hookups, or do I?
- How long from permit to the final inspection on your last three ADUs?
- What is the payment schedule, and what is extra?
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