Updated: May 20, 2026
Location and Projects
Address
9385 W GREEN BAY LN, Crystal River, FL, 34428
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Jefferson Mechanical Services Inc
Jefferson Mechanical Services Inc, 9385 W Green Bay Ln, Crystal River, FL (Owned by: James Jefferson) holds a Certified Mechanical Contractor license and 7 other licenses according to the Florida license board.
Their BuildZoom score of 94 ranks in the top 24% of 191,428 Florida licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Jefferson Mechanical Services Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Jefferson Mechanical Services Inc Services
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Jefferson Mechanical Services Inc Contact Information
Phone Number: (352) 795-1350
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Address: 9385 W GREEN BAY LN, Crystal River, FL 34428
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Building Permits by Jefferson Mechanical Services Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Single family dwelling only * noc for single family dwelling in ebridge * site approved w/cond for single family dwelling only * co must be obtained within 365 days following the end of the impact fee suspension - by 5/12/2018. if co is not issued impact fee will become due prior to calling for final inspection per ar 13.04-06 * a minimum of 4 trees required to be retained on site***
Valuation:
$149,000
Permit #:
201703856
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family dwelling only *** noc for new single family residence in ebridge *** *site approved w/cond for single family dwelling w/10x10 open patio *no trees to be removed* **co must be obtained within 365 days following the end of the impact fee suspension - by 1/13/2018. if co is not issued impact fee will become due prior to calling for final inspection per ar 13.04-5 a.2**
Valuation:
$129,000
Permit #:
201608691
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family dwelling only * noc for new construct in ebridge * site approved w/condition single family dwelling *4 trees to be retained * revised 9/20/16 moved single family dwelling back on property * revised 10/21/16 increased living area & added 12 x 12 concrete slab * co must be obtained within 365 days following the end of the impact fee suspension by 1/13/2018 if co is not iss... see more
Valuation:
$110,000
Permit #:
201604994
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family dwelling only ****revised noc in file for single family dwelling only**** noc in e/b void existing removed cont***site approved w/cond single family dwelling only noc needed & req w/new contractor*14 trees to be retained on site *co must be obtained within 365 days following the end of the impact fee suspension - by 1/13/2018. if co is not issued impact fee will become d... see more
Valuation:
$132,000
Permit #:
201611415
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family dwelling only **noc for single family dwelling in ebridge** **site approved w/condition for single family dwelling only *must plant 1 native tree prior to co co must be obtained within 365 days following the end of the impact fee suspension - by 1/13/2018. if co is not issued impact fee will become due prior to calling for final inspection per ar 13.04-5 a.2"**
Valuation:
$80,000
Permit #:
201511054
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family dwelling only***noc in file for single family dwelling in file for single family dwelling only** site approved w/cond for single family dwelling only *21 trees to be retained on site* **co must be obtained within 365 days following the end of the impact fee suspension - by 1/13/2018. if co is not issued impact fee will become due prior to calling for final inspection per... see more
Valuation:
$165,000
Permit #:
201504501
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Removing aluminum screen room addition stem wall foundation system & frame in two new storage rooms extend truss roof over newly created storage areas w/elect & mechanical only ***noc for old home renovation in olp/ebridge * flood zone ae pre-firm structure not a substantial improvement no flood vents required elevation certificate not required **site approved w/condition removing al... see more
Valuation:
$16,400
Permit #:
201600960
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Site and building permit for 15x27 addition and 17x22 roof area to an existing chapel ** noc req & in file for addition to existing chapel!!**nonresidential *flood zone ae/x structure located flood zone x fema regulations do not apply **** permit repurchased 02/03/2020 ***
Valuation:
$78,000
Permit #:
201506402
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Air conditioning change out - 2.5 ton 14 seer heat pump system *** noc n/a ***flood zone ae pre-firm structure unit should meet base flood elevation of 7 navd existing grade approx 6 navd elevation certificate not required
Valuation:
$3,895
Permit #:
201705039
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 10 tons of air and reconfigure duct for proper ventilation * non-residential ** no noc req **flood zone ae/x structure appears to be located in flood zone x fema regulations do not apply plans state all equipment is in place atf
Valuation:
$3,400
Permit #:
201509295
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building permit & details for storage tanks and dumpster w building # 200902328 --- noc rec & in file for new gas/convenience store all permits included --- nonresidential--- see 200900876 for site permit--- permit # 200902329 for underground storage tanks 200902330 for trash enclosure **flood zone a11 required base flood elevation 8 per survey in file*** no flood elevation certificat... see more
Valuation:
$700,000
Permit #:
200902328
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install hvac work in 47x29 glass room (permit 201509571) * * flood zone ae elevation of proposed glass room meets base flood elevation of 9 navd according to raised seal elevation certificate submitted with permit 200103556 elevation certificate not required
Valuation:
$4,050
Permit #:
201511437
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New in law suite w attached breezeway foyer ***noc new in law suite w attached breezeway foyer** flood zone ae/x structure located flood zone x fema regulations do not apply *site approved for new in law suite w attached breezeway foyer *no trees to be removed*
Valuation:
$40,000
Permit #:
201505122
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Air conditioning change out **noc n/a** permit expired *** contractor never called for inspection *** must repurchase permit call for inspection & get passed inspection in order to close this permit ***** permit repurchased 4/2/2018 - must set up inspection & pass inspection ***
Valuation:
$3,125
Permit #:
201506462
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Air conditioning changeout** noc n/a * flood zone ae/x structure appears to be located flood zone x fema regulations do not apply for this scope
Valuation:
$3,500
Permit #:
201705688
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Change out 2 ton heat pump system * noc n/a**flood zone _ae____ not a substantial improvement elevation certificate not required***************permit repurchased 5/11/17
Valuation:
$3,950
Permit #:
201503415
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Air conditioning changeout**noc n/a***flood zone __a11___ pre-firm structure remaining allowable improvement: $88014 elevation certificate not required ** ****** permit expired contractor never called for inspection *** permit closed *********
Valuation:
$4,495
Permit #:
201406699
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Air conditioning change install new 2.5 ton 14 seer air conditioning with electric heat; n.o.c. not applicable permit expired more than 6 months prior to data cleanup date
Valuation:
$3,675
Permit #:
201705259
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
21.4 x 28.6 addition to rear of house -- noc file/ebridge for addition only * **site approved for 21.4 x 28.6 addition to rear of house and (45 x 20 above ground pool w/deck 1250-sqft 10 x 12 shed & 10 x 15 carport)**
Valuation:
$24,000
Permit #:
201409750
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Repl sfd***noc in file for repl single family residence - flood zone a11 required base flood elevation 9ft per raised seal elevation survey - preliminary elevation certificate required 21 days after established finished floor - final elevation certificate required prior to final inspection**4/13/2011--site approved for replacement single family dwelling only--no trees to be removed**
Valuation:
$95,000
Permit #:
201102469
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Jefferson Mechanical Services Inc License info
Verified License
| License # | CMC1249927 |
| Status | Active |
| State | Florida |
| Type | Certified Mechanical Contractor |
- BuildZoom verified this license was active as of July 2025.
Verify this license's status for Jefferson Mechanical Services Inc at the Florida Department of Business & Professional Regulation.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| State | Florida |
| Type | Construction Business Information |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Jefferson Mechanical Services Inc with the Florida Department of Business & Professional Regulation
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CMC1249927 |
| Status | Inactive |
| City | Daytona Beach |
| Type | Contractor |
- According to the The City of Daytona Beach, FL, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Jefferson Mechanical Services Inc at the The City of Daytona Beach, FL.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CMC1249927 |
| Status | Inactive |
| County | Orange County |
| Type | M Mechanical |
- According to the Orange County Public Schools, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Jefferson Mechanical Services Inc at the Orange County Public Schools.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| State | Florida |
| Type | Certified Roofing Contractor |
- According to the Florida Department of Business & Professional Regulation, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | S-CMC1249927 |
| Status | Inactive |
| County | Sumter County |
| Type | Contractor |
- According to the County of Sumter, FL, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Jefferson Mechanical Services Inc at the County of Sumter, FL.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 0064293 |
| Status | Inactive |
| State | Florida |
| Type | Construction Business Information |
- According to the Florida Department of Business & Professional Regulation, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Jefferson Mechanical Services Inc at the Florida Department of Business & Professional Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | QB64293 |
| Status | Inactive |
| State | Florida |
| Type | Construction Business Information, |
- According to the Florida Department of Business & Professional Regulation, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Jefferson Mechanical Services Inc at the Florida Department of Business & Professional Regulation.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Insured
| Insurer | Central Ridge Ins |
Insured
| Workers Comp Provider | Dwc |
271
Permits
- Building permit records show that Jefferson Mechanical Services Inc has worked on 271 permitted projects.
Jefferson Mechanical Services Inc Employees
JJ
James A. Jefferson
Owner
JJ
James Jefferson
Owner
JA
Jefferson, James A
JJ
Jefferson, James Alan Jr