Licensed Contractors in Downers Grove, California
Downers Grove has 8 licensed contractors registered with the California Contractors State License Board across 9 trade classifications. The most common specialties are Boiler, Hot-Water Heating and Steam Fitting Contractor (1), Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor (1), Plumbing Contractor (1). 4 contractors hold general contractor licenses (Class A or B).
All license data is sourced from the California Contractors State License Board (CSLB). Last data update: February 20, 2026.
Contractors by Classification
General Contractors
Specialty Contractors
C-4: Boiler, Hot-Water Heating and Steam Fitting Contractor
(1)
C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
(1)
C-36: Plumbing Contractor
(1)
C-17: Glazing Contractor
(1)
D34: Prefabricated Equipment
(1)
C-10: Electrical Contractor
(1)
C-53: Swimming Pool Contractor
(1)
License #934740
B
Downers Grove, CA
Est. 2009
Richard Lastovka
Active
License #938908
C-53
Downers Grove, CA
Est. 2009
Am Mechanical Llc
Active
License #1037938
C-4, C-20 +1 more
Downers Grove, CA
Est. 2018
Ck2 Contract Glazing
Active
License #1075522
C-17
Downers Grove, CA
Est. 2021
License #1076021
A, B
Downers Grove, CA
Est. 2021
Rwe Management Company
Active
License #1108580
B
Downers Grove, CA
Est. 2023
Amps Power Solutions Llc
Active
License #1138844
C-10
Downers Grove, CA
Est. 2025
Transmotion Inc
Suspended
License #1116842
D34
Downers Grove, CA
Est. 2024