COMPANY RECORD · CHICAGO, IL
Mz Systems Co — permit history in Chicago, IL
Mz Systems Co appears on 35 Chicago permit records from 2010 through 2025, all of them mechanical / hvac.
Permit categories
| Category | Permits | Share |
|---|---|---|
| Mechanical / HVAC | 35 | 100% |
Activity by year
| Year | Permits issued |
|---|---|
| 2010 | 3 |
| 2012 | 4 |
| 2014 | 3 |
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
Busiest year on record: 2020, with 5 permits. One project can account for several filings, so read this as filing activity rather than workload.
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This page is a snapshot of Mz Systems Co. The search behind it holds more than 664,804 Chicago permits naming a contractor, since 2009: 427,556 electrical permits, 332,944 building permits, 134,935 plumbing permits, 103,067 mechanical (HVAC) permits, 28,213 signage permits.
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Named on the same permit
| Name in source | Linked permits | Last seen |
|---|---|---|
| Persaud Construction | 4 | 2023-11-06 |
| Forge Builders, LLC | 3 | 2018-08-02 |
| Parallel Design Build Inc | 3 | 2021-05-17 |
| Benvenuti And Stein, Inc. | 2 | 2017-10-18 |
| Mcgovern Plomin Development, Inc. | 2 | 2010-05-19 |
| Professional Masonry Svcs, Inc | 2 | 2017-10-18 |
| America's Custom Home Builders, Inc | 2 | 2020-11-09 |
| Dayton Street Development LLC | 2 | 2020-12-14 |
| Dcr Builders Company Inc | 2 | 2024-08-02 |
| D.C.A. Quality Construction Co | 2 | 2020-11-09 |
| 3517 Wolfram, LLC | 1 | 2010-04-01 |
| All Concrete Contractors Inc | 1 | 2024-08-02 |
36 companies are named alongside Mz Systems Co on the same Chicago permit. A shared permit is a documented co-appearance, not proof of a current contract. Names appear as the authority published them.
Where they worked
| Address in source | Most recent permit |
|---|---|
| 5026 N LINCOLN AVE | 2025-12-19 |
| 4014 W 15TH ST | 2025-08-08 |
| 1837 N MONTICELLO AVE | 2024-08-02 |
| 1933 W BELLE PLAINE AVE | 2023-11-06 |
| 1218 W ADDISON ST | 2021-05-17 |
| 1027 W ALTGELD ST | 2020-12-14 |
| 1121 W WOLFRAM ST | 2020-11-09 |
| 5556 N FRANCISCO AVE | 2020-10-01 |
| 1025 W ALTGELD ST | 2020-09-14 |
| 2553 W ARMITAGE AVE | 2020-09-08 |
| 1615 N CLYBOURN AVE | 2019-06-19 |
| 110 W KINZIE ST | 2019-06-13 |
| 3813 N KEELER AVE | 2019-04-22 |
| 1842 N MOHAWK ST | 2018-08-02 |
34 distinct addresses on record; the 14 most recent are shown. Declared value on record runs from $0 to $1,200,000, median $140,000. Addresses appear as the authority published them. A permit is a filing at an address, not a completed job there.
Also named on permits at the same addresses
| Company | Shared addresses | Years |
|---|---|---|
| Persaud Construction | 4 | 2014–2023 |
| George Electric Co. | 3 | 2017–2018 |
| Ace Electric | 2 | 2014–2025 |
| Kenneth D. Dosie Electric | 2 | 2020 |
| Texa Engineering | 2 | 2020 |
| D.C.A. Quality Construction Co | 2 | 2020 |
| Kapital Electric Company | 2 | 2017–2023 |
| Ailey Solar Electric Inc | 2 | 2019–2023 |
Companies that also appear in Chicago permit records at addresses where Mz Systems Co filed, in any year. Sharing an address is a documented co-appearance, not proof that they worked on the same project or with each other.
Permits on record
35 permits; open the full list
| Permit | Issued | Category | Address in source | Scope as filed | Declared value |
|---|---|---|---|---|---|
| 101076163 | 2025-12-19 | Mechanical / HVAC | 5026 N LINCOLN AVE | SC 2019 CBRC: INTERIOR REMODELING OF A 1ST FLOOR COMMERCIAL SPACE FOR A NAIL SALON. (OCC. GRP. B; CONST. TYPE IIIA) | $40,000 |
| 101061237 | 2025-08-08 | Mechanical / HVAC | 4014 W 15TH ST | SPR 2019 CBRC - REPLACE 2 STORY ENCLOSED PORCH WITH PROPOSED 2 STORY OPEN PORCH AND INTERIOR ALTERATIONS IN 1ST FLOOR COMMUNITY HALL AND 2ND FLOOR DWELLING UNIT IN AN EXISTING 2 ST | $60,000 |
| 101052550 | 2024-08-02 | Mechanical / HVAC | 1837 N MONTICELLO AVE | NEW 2-STORY, 2-UNIT RESIDENTIAL FRAME BUILDING, 5A CONSTRUCTION, W/ BASEMENT, OPEN REAR WOOD DECK, AND 3-CAR CONCRETE PARKING PAD, PER PLAN | $400,000 |
| 101030249 | 2023-11-06 | Mechanical / HVAC | 1933 W BELLE PLAINE AVE | SELF CERT 2019 CBC: NEW FRAME COACH HOUSE ADU W/ 2 CAR GARAGE, NEW TRASH ENCLOSURE, AND NEW WD FENCE. PRINCIPAL BLDG N.I.C. (OCCU. R-5, TYPE VA CONST.) | $70,950 |
| 100865195 | 2021-05-17 | Mechanical / HVAC | 1218 W ADDISON ST | AN INTERIOR RENOVATION TO AN EXISTING III-B BUILDING WITH TYPE C-1 LARGE ASSEMBLY OCCUPANCY INCLUDING NEW LULA ELEVATOR, PLUMBING, ELECTRICAL, & HVAC WORK IN AN EXISTING UNSPRINKL | $300,000 |
| 100895229 | 2020-12-14 | Mechanical / HVAC | 1027 W ALTGELD ST | SELF CERT 2019- REMOVE AND REPLACE EXISTING OPEN PORCH WITH NEW, REMODEL ONLY FIRST FLOOR PLAN UNIT. BATHROOM WILL BE KEPT IN SIMIALR LOCATION WITH NEW FIXTURES AND MECHANICAL AND | $100,000 |
| 100883283 | 2020-11-09 | Mechanical / HVAC | 1121 W WOLFRAM ST | NEW 3-STORY SINGLE FAMILY RESIDENTIAL HOUSE WITH ATTACHED TWO-CAR GARAGE WITH ROOFTOP DECK. TYPE 3A CONSTRUCTION. 2019 CHICAGO BUILDING CODE. | $1,200,000 |
| 100873565 | 2020-10-01 | Mechanical / HVAC | 5556 N FRANCISCO AVE | ERECT A 3-STORY SFR W/ BASEMENT, REAR OPEN DECK AND AN ATTACHED 2-CAR GARAGE (THE MOST OF THE EXISTING BUILDING IS BEING DEMOLISHED). | $900,000 |
| 100870065 | 2020-09-14 | Mechanical / HVAC | 1025 W ALTGELD ST | SELF-CERT: INTERIOR ALTERATIONS WITH PENTHOUSE ADDITION TO EXISTING 3 STORY MASONRY RESIDENCE WITH NEW MASONRY GARAGE - DECONVERT FROM 3 UNITS TO SINGLE FAMILY. SPRKLR SYSTEM INSTA | $477,450 |
| 100884356 | 2020-09-08 | Mechanical / HVAC | 2553 W ARMITAGE AVE | SELF-CERT GROUND FLOOR INTERIOR TENANT ALTERATIONS FOR NEW TOILET ROOMS, JANITOR CLOSET, SERVICE CORRIDOR AND ELECTRICAL ROOM FOR MERCANTILE (WAREHOUSE/WHOLESALE) USE WITHIN AN EXI | $30,000 |
| 100826290 | 2019-06-19 | Mechanical / HVAC | 1615 N CLYBOURN AVE | REPLACE 1 ROOF TOP UNIT | $0 |
| 100826292 | 2019-06-19 | Mechanical / HVAC | 1615 N CLYBOURN AVE | REPLACE ONE ROOFTOP UNIT WITH ONE, 15 TON, AIR COOLED, SELF-CONTAINED, R410A, AMERICAN STANDARD ROOFTOP UNIT, SERVING RETAIL AREA. | $0 |
| 100810123 | 2019-06-13 | Mechanical / HVAC | 110 W KINZIE ST | SELF-CERT: INTERIOR ALTERATIONS TO A SECOND FLOOR OFFICE SPACE AS PER PLANS. NO CHANGE IN USE. NO STRUCTURAL WORK TO BE PERFORMED. | $139,800 |
| 100805787 | 2019-04-22 | Mechanical / HVAC | 3813 N KEELER AVE | CONSTRUCT NEW 2 STORY SFR W/BASEMENT, AND DETACHED 2 CAR ALLEY ACCESSED GARAGE. PROJECT TO INCLUDE ROOF MOUNTED SOLAR PANELS | $750,000 |
| 100749717 | 2018-08-02 | Mechanical / HVAC | 1842 N MOHAWK ST | PARTIAL INTERIOR RENOVATION AND THIRD FLOOR ADDITION TO A SINGLE TOWNHOUSE WITHIN AN EXISTING 2 SEPERATE 3-STORY TOWNHOME DEVELOPMENT CONTAINING 10 D.U. TOTAL. WORK TO INCLUDE NEW | $75,000 |
| 100746924 | 2018-02-09 | Mechanical / HVAC | 3830 N MARSHFIELD AVE | REVISION TO PERMIT#100711690 CHANGE HVAC AND PLUMBING CONTRACTOR TO MZ SYSTEMS CO. | $1 |
| 100745347 | 2018-01-30 | Mechanical / HVAC | 2124 W WARNER AVE | REVISION TO PERMIT#100714573 - CHANGE HVAC CONTRACTOR TO MZ SYSTEMS CO. | $1 |
| 100675051 | 2017-10-18 | Mechanical / HVAC | 919 N LARRABEE ST | PROPOSED 5TH FLOOR ADDITION WITH ROOFTOP WHIRLPOOL TUB LOCATED OUTDOORS ON 5TH FLOOR ROOF TOP ACCESS FROM 4TH FLOOR CONDOMINIUM UNIT PER PLANS. ALL STAIRS TO REMAIN. BOTH CURRENT A | $50,000 |
| 100652458 | 2016-11-08 | Mechanical / HVAC | 1718 W JULIAN ST | THIS PROJECT INVOLVES BUILDING A CLASS A-2 4 STORY 4 UNIT RESIDENTIAL BUILDING AT 1718/ 1720 W. JULIAN STREET. 1718 W. JULIAN ST. IS CURRENTLY OCCUPIED BY A CLASS A-1 2 STORY SINGL | $850,000 |
| 100649744 | 2016-06-22 | Mechanical / HVAC | 3653 N SACRAMENTO AVE | WORK IS FOR BASEMENT AND PARTIAL FIRST FLOOR INTERIOR RENOVATION TO EXISTING SINGLE-FAMILY AND RECONFIGURE STAIRS ON ALL FLOORS. CURRENT USE/CLASS: RESIDENTIAL/A-1. PROPOSED USE/C | $60,000 |
| 100631187 | 2016-02-24 | Mechanical / HVAC | 1448 N LAKE SHORE DR | SELF-CERTIFICATION: OCCUPANCY: A-2/ MULTI FAMILY. RENOVATION TO DWELLING UNIT (UNIT 4B) ON FOURTH FLOOR. | $100,000 |
| 100610084 | 2015-11-23 | Mechanical / HVAC | 3330 N LOCKWOOD AVE | INTERIOR AND EXTERIOR ALTERATIONS FOR A CHILD DAYCARE CENTER (C3) AS PER PLAN | $800,000 |
| 100584534 | 2015-07-13 | Mechanical / HVAC | 4237 N DAMEN AVE | DE-CONVERT EXISTING 2 D.U. RESIDENTIAL BUILDING TO SINGLE FAMILY RESIDENCE, REWORKING FRONT PORCH/SIDEWALKS, ADDING BACK DECK AND ADDING TO GARAGE AS PER PLANS.**CERTIFIED CORRECTI | $300,000 |
| 100599115 | 2015-07-02 | Mechanical / HVAC | 4844 N WOLCOTT AVE | RENOVATION AND DECK ADDITION FOR AN EXISTING 2-STORY TYPE III-B CONSTRUCTION TWO FLAT (A-2) AS A SINGLE FAMILY RESIDENCE (A-1). CONDITIONAL PERMIT SUBJECT TO FIELD INSPECTION. | $800,000 |
| 100578086 | 2015-04-21 | Mechanical / HVAC | 4133 N HARDING AVE | SELF CERT: ADDITION AND INTERIOR RENOVATION OF AN EXISTING 2-STORY WOOD FRAME SINGLE FAMILY RESIDENCE WITH ADDITION EXTENDING FROM CRAWL SPACE TO SECOND FLOOR AND INCLUDES ADDED B | $300,000 |
| 100535337 | 2014-10-20 | Mechanical / HVAC | 3720 N GREENVIEW AVE | 1-STORY REAR ADDITION AND SUNROOM ADDITION AND RAISED TERRACE ADDITION AND THE EXPANSION OF THE EXISTING 3-CAR GARAGE TO 4-CAR GARAGE WITH A PROPOSED ATTACHED STORAGE SHED. FINAL A | $250,000 |
| 100524114 | 2014-04-07 | Mechanical / HVAC | 201 N WELLS ST | INTERIOR BUILD OUT OF PROFESSIONAL SERVICES OFFICE FOR REVOLUTION PHYSICAL THERAPY WEIGHT LOSS IN NORTHWEST GROUND FLOOR SPACE OF EXISTING 201 NORTH WELLS STREET, A HIGH RISE BUILD | $80,000 |
| 100529094 | 2014-03-12 | Mechanical / HVAC | 4047 N HERMITAGE AVE | RESIDENTIAL PROJECT. THE SCOPE OF WORK INCLUDESINTERIOR RENOVATION WORK TO CONVERT A 2-FLAT HOME TO A SINGLE FAMILYRESIDENCE INCLUDING WORK DONE TO THE BATHROOMS, BEDROOMS, KITCHEN | $182,620 |
| 100445039 | 2012-12-11 | Mechanical / HVAC | 2447 N SPAULDING AVE | RESIDENTIAL DECONVERSION OF A 2FLAT INTO A SINGLE FAMILY RESIDENCE. GREEN GUT REHAB. REPLACE FRONT PORCH. REMOVE ENCLOSED REAR PORCH AND REPLACE WITH OPEN DECK. REPLACE EXISTING | $200,000 |
| 100441568 | 2012-08-31 | Mechanical / HVAC | 2104 W WAVELAND AVE | GUT RENOVATION OF OWNER OCCUPIED TWO-FLAT AS SINGLE FAMILY RESIDENCE PER PLANS. | $600,000 |
| 100441571 | 2012-08-02 | Mechanical / HVAC | 3706 N BELL AVE | RENOVATION OF SECOND FLOOR AND PART OF FIRST FLOOR TO CONVERT EXISTING TWO FLAT TO OWNER OCCUPED SINGLE FAMILY PER PLANS:NOTE-THE ELECT WORK FOR THIS PROJECT WILL BE UNDER 10044981 | $80,000 |
| 100426684 | 2012-02-06 | Mechanical / HVAC | 1411 W BELLE PLAINE AVE | DECONVERT EXISTING 2 DU TO SINGLE FAMILY RESIDENCE WITH REAR ADDITION& REHAB WITH NEW 2 CAR FRAME GARAGE WITH ROOFTOP DECK AS PER PLAN. (ZONING APPROVED UNDER # 100424896). **COND | $140,000 |
| 100337099 | 2010-05-19 | Mechanical / HVAC | 2238 N AVERS AVE | 2 DU REMODEL, DUPLEX 1ST FLOOR UNIT DOWN TO BASEMENT, NEW OPEN 2 STORY PORCH PER PLANS | $100,000 |
| 100337031 | 2010-04-01 | Mechanical / HVAC | 3141 W 15TH ST | RENOVATION OF (2) STORY WITH BASEMENT BUILDING. CONVERT FROM (2) D.U. TO (3) D.U. GREEN PERMIT PROGRAM BENEFIT TIER II. | $160,000 |
| 100302700 | 2010-02-10 | Mechanical / HVAC | 1401 N ASTOR ST | INTERIOR ALTERATIONS TO EXISTING 3 STORY SINGLE FAMILY HOME WITH BASEMENT AS PER PLANS.TO INCLUDE NEW ENTRANCE TO EXISTING GARAGE. | $400,000 |
Fields appear as the issuing authority published them, including spelling and blanks. Scope text is the applicant's description of intended work, not an inspection finding.
Source and limits
Public Chicago permit records through 2025, counted by distinct permit number. This is a historical filing record: it cannot show current backlog, pricing, crew availability, licensing or insurance, and a quiet period may only mean work was filed elsewhere. Confirm anything commercial with the company and with the issuing authority before acting. How we build these records, and what we withhold →
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