Washington contractor
MMCS LLC
First registered in Washington on November 11, 2021
- License number
- MMCSLL*794OP
- UBI
- 603537854
- Trade
- Plumbing(all plumbing contractors in Washington)
- L&I license type and specialty
- PLUMBING CONTRACTOR · RESIDENTIAL
- City
- REDMOND, WA(all contractors in Redmond)
- Phone
- (425) 881-7920
Current verification
- Found: No Attorney General complaint records found
- Review: Registration is not currently active
- Review: A registration suspension is on record
- Review: 8 other license records under the same UBI
From the state records below; each section shows its source and when it was last synced.
Registration
- Status
- SUSPENDED
- Effective date
- November 11, 2021
- Expiration date
- November 11, 2027
- Suspension date
- January 1, 2026
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Related licenses
8 other license numbers are registered under the same UBI, 603537854. A UBI identifies one business with the state; a business may hold more than one license, renew under a new number, or register a new license after an earlier one closed.
License HOMECCA751QG · PLUMBING CONTRACTOR · November 7, 2025 to November 7, 2027
License HOMECCA782DC · ELECTRICAL CONTRACTOR · February 8, 2022 to February 8, 2028
License HOMECCA785BD · CONSTRUCTION CONTRACTOR · January 4, 2022 to January 4, 2028
License COMFOMS804B7 · CONSTRUCTION CONTRACTOR · January 27, 2020 to January 27, 2024
- SULLIVAN HVAC LLCEXPIRED
License SULLIHL812Q1 · CONSTRUCTION CONTRACTOR · November 21, 2019 to November 21, 2023 · suspension date January 12, 2023
- GS HEATING AND COOLING LLCEXPIRED
License GSHEAHC821QR · CONSTRUCTION CONTRACTOR · November 19, 2018 to November 19, 2024 · suspension date December 1, 2022
- MM COMFORT SYSTEMSEXPIRED
License MMCOMCS839PT · ELECTRICAL CONTRACTOR · October 30, 2017 to October 30, 2023 · suspension date August 29, 2023
- MM COMFORT SYSTEMSEXPIRED
License MMCOMCS85564 · CONSTRUCTION CONTRACTOR · September 24, 2015 to September 24, 2023
Source: L&I Contractor License Data - General, Washington State Department of Labor & Industries. Last synced October 7, 2026.
Bond
L&I does not publish bond records for contractors with SUSPENDED status.
Source: L&I Contractor License Data - Bond, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Liability insurance
L&I does not publish liability insurance records for contractors with SUSPENDED status.
Source: L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries. Last synced October 9, 2026.
People
Principals L&I lists for this license.
- RASTETTER, RYAN JSince September 7, 2021
Source: L&I Contractor License - Principal Data, Washington State Department of Labor & Industries. Last synced October 9, 2026.
Attorney General complaints
No Attorney General complaint records found.
Matched on business name and city: MMCS in REDMOND. Complaints filed under another name or city are not included.
A complaint record does not establish that the business violated the law.
Source: Attorney General Consumer Complaints, Washington State Attorney General's Office. Last synced October 9, 2026.
Record history
Changes to this contractor's state records since we began tracking them. The state's current-status tools do not show these.
No changes recorded since our records began on October 6, 2026.
Sources
- L&I Contractor License Data - General, Washington State Department of Labor & Industries
- L&I Contractor License Data - Bond, Washington State Department of Labor & Industries
- L&I Contractor License Data - Insurance, Washington State Department of Labor & Industries
- L&I Contractor License - Principal Data, Washington State Department of Labor & Industries
- Attorney General Consumer Complaints, Washington State Attorney General's Office
Record last synced October 7, 2026.
Check this record against the state directly on L&I's Verify a Contractor page (search by license number MMCSLL*794OP).