Alum Works Inc
Home addition contractor based in Encino. Licensed since 2005.
- License active
- Workers' comp on file
9 addition jobs on Los Angeles permits, 2023 to 2025. 26th most addition permits of 357 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 857189, active in the state's records on Sep 23, 2026General buildingNo complaints or citations on the board's public record. | Checks out |
| Workers' comp? | Workers' comp policy on file with the stateThis covers their crew if someone is hurt. It is not insurance for your home. | On file |
| In business? | Licensed since 2005 | |
| Jobs on record | 9 addition jobs on Los Angeles permits, 2023 to 2025Every permit we have for them is addition.They are based in Encino. Work outside Los Angeles is not in these records.26th most addition permits of 357 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 857189 on CSLB
Cost and timing
All addition jobs in Los Angeles: $38,000 to $120,000
Half of 10,836 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Second-story additions in Los Angeles: $75,000 to $200,000 (858 permits)
- Garage additions in Los Angeles: $48,000 to $110,000 (3,411 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 $9,000 (half list more, half less)
That is the figure written on the permit form, which can be far from what you pay. What addition jobs cost in Los Angeles.
Get 2 or 3 written quotes.
Permit timeline
Across Los Angeles, a addition permit stays open about about 13 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 addition jobs take.
Track record
1 job in the last 12 months, down from 6 the year before
Where they work most
- 913262 jobs
- 913561 job
- 913111 job
- 913071 job
- 900641 job
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Nov 29, 2025 | AdditionBuild 16' x 16' aluminum patio enclosure attached to the rear of sfd | 91356 | $12,000 |
| Sep 4, 2025 | AdditionAddition of new solid patio cover 11' x 19' (209 s.f.) per icc-esr-195 | 91326 | $10,000 |
| Aug 30, 2025 | AdditionADD ATTACHED ALUMINUM PATIO COVER (12' x 41') AT REAR OF (E) SFD PER L | 91311 | $5,900 |
| Aug 5, 2025 | AdditionProposed attached 33'-11" x 12'-0" aluminum patio cover per engr desig | 91307 | $9,000 |
| Apr 22, 2025 | AdditionAdd 14'x20' patio enclosure to the rear of (e) one story dwelling per | 90064 | $8,000 |
| Mar 3, 2025 | AdditionProposed attached 30'x11' alluminum patio cover (esr-2676p) addition t | 91326 | $9,000 |
| Dec 30, 2024 | AdditionAddition of a 13' x 16' aluminum patio cover per std | 91306 | $6,000 |
| Mar 4, 2024 | AdditionNEW 20'-10" x 13' ATTACHED PATIO COVER TO (E) SFD. WORK DONE PER ENGIN | 91423 | $10,000 |
| Dec 1, 2023 | AdditionPROPOSED 12'-0" x 29'-0" ALUMINUM PATIO COVER ADDN PER ENGR DESIGN. SE | 91606 | $10,000 |
What to ask before you hire
About Alum Works Inc
- Ask what the warranty covers and for how long, in writing.
Worth asking any home addition contractor
- Can you show me proof of liability insurance and your bond?
- Do you handle the plans and engineering, or do I hire them?
- Who will run the job day to day, and who are the subcontractors?
- Who pulls the permits, and what is the payment schedule?
Get a quote from Alum Works Inc
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Your job room keeps the request, your photos and every reply in one place, with an assistant that checks prices against city permits. Keep its link: it is the key to your job.
Open your job roomMore home addition contractors near 91326 and 91356
- Golden Patio Restoration
- American Patio Masters Inc
- Clark Scott Construction Inc
- Local Construction Remodeling
- A R M Builders Inc
- M A Construction
See all 357 home addition contractors in Los Angeles, ranked by jobs
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