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Tolin Mechanical Systems Company, LLC

Name: Tolin Mechanical Systems Company, LLC
Address: Denver, CO, 80207, US
Telephone: (303) 455-2825

Electrical Contractor · Denver, CO

Active license

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License8 records · Active license

Permits75 on file

Discipline / legalNo board discipline flag

BBBNot yet available

Phone(303) 455-2825

Address80207

Report verdict

Licensed & active (expires 2029-09-30) · No board discipline flag found in covered sources · 75 permits on file (Boulder, Denver, Boulder County)

88/100 HomeProFax Score — public-record factors only, not a rating of workmanship. How the score works Full report

The state board is the authority. A flag is a prompt to read the board record, not a verdict. Verify license status with the issuing board before you hire. See methodology and disclaimer & corrections.

What this report checks

✓ License

Checked

8 board record(s) · Active license

✓ Discipline & legal

Checked

No board discipline flag found in covered sources.

✓ Permits

Checked

75 permit(s) on file from covered city sources.

◐ Reviews & complaints

Where available

BBB where researched and approved HomeProFax reviews only; external ratings are linked below, not stored or scored.

Score breakdown

Factor	Points	Why
License status	35/35	Active license on file with a state board
Discipline & legal flags	20/20	No disciplinary flag on board record
Permit history	20/20	75 permits on file
Reviews (BBB + HomeProFax)	13/25	No BBB rating on file and no approved HomeProFax reviews yet (neutral). External ratings are linked below, not stored

A simple, transparent sum of public-record factors. How the score works. Not a rating of workmanship.

Source data as of: Report rebuilt from source files on 2026-10-19 · license status refreshed from City of Aurora list, 2026-10-21, City of Thornton list, 2026-10-21, City of Arvada list, 2026-10-21 · most recent permit on file: 2025-11-17.

What we checked

License	Checked	CO Electrical Contractor #3464 · active · 8 licenses on file, 8 active
Bond	Not available in CO
Workers' comp	Not available in CO
Years licensed	Checked	Licensed since 1992
Business registration	Checked	Registered since 2004 · Good Standing
Permits	Checked	75 permits on record
Discipline	Checked	none on record
OSHA	Not checked yet	OSHA records not checked yet
Reviews & outside links	Not checked yet	No review lookup run yet
Contractor-provided	Not checked yet	Nothing provided by the contractor yet

Public records as of their source dates. Board status is shown as reported by the board. Not a guarantee. Ask the contractor for their verified HomeProFax report.

Licenses

Licensed since 1992 (earliest original issue date on these state license records; not a business start date)

Registered since 2004 · Good Standing · status as of 2026-10-19 (business registration: TOLIN MECHANICAL SYSTEMS COMPANY, LLC, ID 20041314652. Source: Colorado Secretary of State, Business Entities (public domain). Matched by HomeProFax on name plus address/city; verify with the state.)

License #	Type	Status	Issued	Expires	Source
CO 3464	Electrical Contractor (EC)	active	1992-01-06	2029-09-30	State board
CO 1993	Plumbing Contractor (PC)	active	2008-03-17	2027-02-28	State board
CO Aurora city license	City of Aurora (HVAC/Mechanical Contractor) City license: Mechanical Systems Contractor	active Status from City of Aurora list, 2026-10-21	—	—	City of Aurora licensed-contractor list (public), retrieved 2026-10-21
CO LCC2015000644	City of Thornton (Electrical Contractor) City license: Class D Electrical	active Status from City of Thornton list, 2026-10-21	—	2027-05-13	City of Thornton licensed-contractor list (public), retrieved 2026-10-21
CO LCC2015000644	City of Thornton (HVAC/Mechanical and Plumbing Contractor) City license: Class D Plumbing/Mechanical	active Status from City of Thornton list, 2026-10-21	—	2027-03-11	City of Thornton licensed-contractor list (public), retrieved 2026-10-21
CO AEC4513	City of Arvada (Plumbing Contractor) City license: Plumbing	active Status from City of Arvada list, 2026-10-21	—	—	City of Arvada licensed-contractor list (public), retrieved 2026-10-21
CO AEC4513	City of Arvada (HVAC/Mechanical Contractor) City license: Mechanical	active Status from City of Arvada list, 2026-10-21	—	—	City of Arvada licensed-contractor list (public), retrieved 2026-10-21
CO AEC4513	City of Arvada (Electrical Contractor) City license: Electrical	active Status from City of Arvada list, 2026-10-21	—	—	City of Arvada licensed-contractor list (public), retrieved 2026-10-21

Building permits

Date	Permit	Type	Address	Value
2025-11-17	MEC2025-01889	Mechanical Permit	3333 WALNUT ST	$240,000
2024-12-13	MEC2024-01686	Mechanical Permit	1911 11TH ST	$39,627
2024-09-25	2024-DEMO-0000532	4 - Alteration	4700 S Syracuse ST 700	$0
2024-09-24	2024-DEMO-0000531	4 - Alteration	4700 S Syracuse ST 700	$0
2024-09-04	MEC2024-01272	Mechanical Permit	1770 28TH ST	$30,021
2022-01-21	2021-DEMO-0001997	4 - ALTERATION	1776 CURTIS ST	$0
2022-01-19	2021-DEMO-0001403	4 - ALTERATION	555 17TH ST	$30,500
2021-12-30	2021-DEMO-0002008	4 - ALTERATION	560 22ND ST	$0
2021-11-01	MEC2021-01856	Mechanical Permit	1821 30TH ST	$114,446
2021-03-10	ELE2021-00048	Electrical Permit	3300 WALNUT ST	$5,000
2021-03-10	MEC2020-02053	Mechanical Permit	3300 WALNUT ST	$190,371
2020-07-24	BP-20-1669	Commercial Mechanical	6400 DRY CREEK PARKWAY	—
2019-12-03	2019-COMMCON-0002797	Alteration/Tenant Finish	4700 N Moline St	$500
2019-09-16	ELE2019-00980	Electrical Permit	6287 ARAPAHOE RD	$100,000
2019-09-16	MEC2019-01131	Mechanical Permit	6287 ARAPAHOE RD	$95,250
2019-01-14	2019-COMMCON-0000090	Alteration/Tenant Finish	1701 N Bryant St	$2,000
2018-10-04	ELE2018-00843	Electrical Permit	3333 WALNUT ST	$10,000
2018-10-04	MEC2018-01007	Mechanical Permit	3333 WALNUT ST	$133,650
2018-01-30	2018-DEMO-0000051	4 - ALTERATION	910 15TH ST 500 MECH	$0
2018-01-30	2018-DEMO-0000052	4 - ALTERATION	910 15TH ST 500 PLUMB	$0
2017-11-16	2017-DEMO-0000924	4 - ALTERATION	100 N FILLMORE ST PENTHOUSE	$0
2016-06-23	PMT2016-02843-MEC	Mechanical Permit	505 THUNDERBIRD CR	$49,900
2016-04-20	PMT2016-01695-MEC	Mechanical Permit	3955 28TH ST	$31,264
2015-02-24	PMT2015-00554-MEC	Mechanical Permit	4775 WALNUT ST	$69,556
2014-08-26	PMT2014-03942-FLD	Floodplain Permit	4775 WALNUT ST	$0
2014-08-26	PMT2014-03942-MEC	Mechanical Permit	4775 WALNUT ST	$64,853
2014-01-16	PMT2013-07160-MEC	Mechanical Permit	3300 WALNUT ST	$81,038
2013-12-12	BP-13-2145	Commercial Mechanical	2655 N63RD STREET	—
2013-11-18	PMT2013-06504-MEC	Mechanical Permit	4775 WALNUT ST	$49,836
2013-07-16	PMT2013-03311-MEC	Mechanical Permit	805 S BROADWAY	$11,688
2013-04-17	PMT2013-01390-ELE	Electrical Permit	2060 BROADWAY	$1,000
2013-04-17	PMT2013-01390-MEC	Mechanical Permit	2060 BROADWAY	$215,000
2013-04-17	PMT2013-01390-RFG	Roofing Replacement Permit	2060 BROADWAY	$5,000
2012-10-02	PMT2012-04766-MEC	Mechanical Permit	4747 TABLE MESA DR	$40,331
2012-08-22	PMT2012-04123-MEC	Mechanical Permit	4775 WALNUT ST	$11,842
2012-08-14	PMT2012-03963-MEC	Mechanical Permit	4775 WALNUT ST	$13,375
2012-08-14	PMT2012-03964-MEC	Mechanical Permit	4775 WALNUT ST	$12,928
2011-06-13	PMT2011-02396-ELE	Electrical Permit	6450 GUNPARK DR	$7,297
2011-06-13	PMT2011-02396-MEC	Mechanical Permit	6450 GUNPARK DR	$51,177
2010-12-14	PMT2010-05551-MEC	Mechanical Permit	2060 BROADWAY	$52,565
2010-10-25	PMT2010-04622-MEC	Mechanical Permit	2060 BROADWAY	$127,000
2010-07-16	PMT2010-02934-MEC	Mechanical Permit	1211 PEARL ST	$14,832
2010-07-15	PMT2010-02919-MEC	Mechanical Permit	1135 BROADWAY ST	$14,930
2010-06-21	PMT2010-02499-MEC	Mechanical Permit	6260 LOOKOUT RD	$78,627
2009-06-26	PMT2009-02436-ELE	Electrical Permit	4600 SLEEPYTIME DR	$19,198
2006-10-03	BP-06-1737	Residential Remodel	5131 WILLIAMS FORK TR	—
2006-10-03	BP-06-1738	Residential Remodel	5131 WILLIAMS FORK TR	—
2006-05-08	PMT2006-01634-MEC	Mechanical Permit	2130 ARAPAHOE AVE	$25,000
2005-01-24	PMT2005-00222-ELE	Electrical Permit	2727 29TH ST	$500
2005-01-24	PMT2005-00222-MEC	Mechanical Permit	2727 29TH ST	$6,000
2004-01-28	PMT2004-00332-MEC	Mechanical Permit	2590 WALNUT ST	$28,000
2002-11-14	PMT2002-04933-MEC	Mechanical Permit	1021 LINCOLN PL	$2,000
2000-06-20	PMT2000-02497-MEC	Mechanical Permit	1885 33RD ST	$44,500
1997-11-28	PMT1997-07658-FIR	Fire Permit	2580 ARAPAHOE AVE	$0
1997-09-24	PMT1997-05964-MEC	Mechanical Permit	4600 SLEEPYTIME	$8,200
1997-06-26	PMT1997-03842-MEC	Mechanical Permit	2727 29TH ST	$6,000
1997-02-04	PMT1997-00630-MEC	Mechanical Permit	2060 BROADWAY	$5,384
1997-01-13	PMT1997-00206-MEC	Mechanical Permit	2060 BROADWAY	$2,000
1995-12-05	PMT1995-09022-MEC	Mechanical Permit	2060 BROADWAY	$7,337
1995-12-05	PMT1995-09025-MEC	Mechanical Permit	2060 BROADWAY	$3,177
1995-08-17	PMT1995-06277-MEC	Mechanical Permit	6420 GUNPARK DR	$1,620
1995-08-10	PMT1995-06048-MEC	Mechanical Permit	2060 BROADWAY	$8,237
1990-11-27	PMT1990-R4980-MEC	Mechanical Permit	2060 BROADWAY	$950
1990-11-27	PMT1990-R4981-MEC	Mechanical Permit	2060 BROADWAY	$5,150
1990-11-05	PMT1990-R4499-MEC	Mechanical Permit	2060 BROADWAY	$925
1990-11-05	PMT1990-R4500-MEC	Mechanical Permit	2088 BROADWAY	$1,150
1990-11-05	PMT1990-R4501-MEC	Mechanical Permit	2060 BROADWAY	$650
1990-10-01	PMT1990-R3577-MEC	Mechanical Permit	2060 BROADWAY	$12,875
1990-09-17	PMT1990-R3210-MEC	Mechanical Permit	1230 SPRUCE ST	$5,980
1990-08-08	PMT1990-R2205-MEC	Mechanical Permit	2060 BROADWAY	$2,360
1990-08-08	PMT1990-R2204-MEC	Mechanical Permit	2060 BROADWAY	$1,230
1989-08-21	PMT1989-P4881-MEC	Mechanical Permit	770 RACQUET LN	$2,000
—	ELE2020-01845	Electrical Permit	3300 WALNUT ST	$5,000
—	MEC2020-01951	Mechanical Permit	3300 WALNUT ST	$187,371
—	ELE2020-01769	Electrical Permit	3300 WALNUT ST	$190,371

Source: City of Boulder Open Data (Construction Permits), City and County of Denver Open Data (demolition permits, CC BY 3.0), Boulder County Open Data (Land Use/Accela building permits, CC BY 4.0), City and County of Denver Open Data (construction permits, CC BY 3.0)

Permit data: City and County of Denver Open Data Catalog, licensed under CC BY 3.0. HomeProFax matched permits to licensed contractors by name; data modified from the original. Not endorsed by the City and County of Denver.
Permit data: Boulder County (Land Use / Accela), licensed under CC BY 4.0. Matched to contractors and modified by HomeProFax; not endorsed by Boulder County. Retrieved Oct 25, 2026.
Permit data: City of Boulder Open Data, dedicated to the public domain under CC0 1.0. Matched to contractors by HomeProFax.

Discipline, complaints & legal

No board discipline or complaints found in our current sources. Federal court search (CourtListener): no state-consistent possible match in our last sample run, or not yet run for this contractor.

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Tolin Mechanical Systems Company, LLC · Electrical Contractor
Denver, CO
License on file: CO ••••3464

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Sources for this report

Boulder County Open Data (Land Use/Accela building permits, CC BY 4.0)
CO license board
City and County of Denver Open Data (construction permits, CC BY 3.0)
City and County of Denver Open Data (demolition permits, CC BY 3.0)
City of Arvada contractor license list
City of Aurora contractor license list
City of Boulder Open Data (Construction Permits)
City of Thornton contractor license list

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