Updated: Jul 12, 2026
Location and Projects
Address
229 RIVER ST, Guilford, CT, 06437
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JJ Sullivan Construction
Based in Guilford, Connecticut, JJ Sullivan Inc provides fuel delivery and HVAC services to residential and commercial clients across the shoreline area. The company supplies heating oil, propane, and diesel fuel, offering automatic delivery options as well as competitive pricing programs. JJ Sullivan Inc also handles installation, service, and maintenance for gas and oil heating systems, central air conditioning, and ductless mini-split systems. The team is available for 24-hour emergency service, supporting heating, cooling, and fuel delivery needs throughout Guilford and surrounding communities. JJ Sullivan Inc has operated for more than 18 years, emphasizing reliable fuel supply and comprehensive HVAC solutions for homeowners and local businesses.
JJ Sullivan Inc Services
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JJ Sullivan Inc Contact Information
Phone Number: (203) 240-4437
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Address: 229 RIVER ST, Guilford, CT 06437
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JJ Sullivan Inc Guilford
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
JJ Sullivan Inc has a BuildZoom score of 108, which places them above 95% of 12,093 contractors in Connecticut.
Activity
|
1 project
|
2023 |
Our building permit records indicate that JJ Sullivan Inc has worked on at least
1.0 project over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
< $5k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Install propane vent free log set & burner. tee into existing gas line & install 1/2 corrugated stainless steel vapor distribution line through basement. set pressure test for inspection & gas check system
Valuation:
$2,498
Permit #:
23-88M
Status:
expired
Fee:
$63
Permit Type:
Gas heater/insert
Building Type:
N/A
Set 57 gallon asme propane storage tank & connect to plumber's inspected & approved gas line to fuel hot water. perform gas & safety check. for barn building
Valuation:
$233
Permit #:
22-26P
Status:
expired
Fee:
$36
Permit Type:
Miscellaneous (re...
Building Type:
N/A
Install new propane fired warm air furnace & remove oil fired furnace. extend existing gas line to furnace & gas check system
Valuation:
$7,200
Permit #:
22-56P
Status:
expired
Fee:
$129
Permit Type:
Miscellaneous (re...
Building Type:
N/A
Set 120 gallon propane tank and run gas line to new log set. set additional 120 gallon propane tank in different location and run gas line to new space heater in garage location
Valuation:
$4,702
Permit #:
19-13B
Status:
complete
Fee:
$89
Permit Type:
Residential fuel gas
Building Type:
N/A
Remove and replace existing propane fired furnace
Valuation:
$1,611
Permit #:
19-11M
Status:
complete
Fee:
$50
Permit Type:
Residential mecha...
Building Type:
N/A
Install 2 - 120 gallon asme propane storage tanks (cust. owned) & polyethylene coated copper line in trench provided; install copper high pressure gas line to generator; install corrugated stainless steel tubing through basement to cook top. set pressure test on gas line. gas check system
Valuation:
$4,620
Permit #:
22-69P
Status:
complete
Fee:
$89
Permit Type:
plumbing
Building Type:
N/A
Install (1) 120 gallon asme propane storage tank on concrete block base & 1/2 corrugated stainless steel piping to fuel kitchen range & future grill box. set pressure test & gas check system
Valuation:
$700
Permit #:
23-30P
Status:
complete
Fee:
$36
Permit Type:
plumbing
Building Type:
N/A
Install (2) 120 gallon propane storage tanks (asme) & 1/2 copper tubing along the bottom exterior of the house to the location of the in-house gas line. set pressure test for inspection
Valuation:
$610
Permit #:
21-1P
Status:
complete
Fee:
$36
Permit Type:
Residential plumbing
Building Type:
N/A
Set (2) 120 gallon asme propane storage tanks & connect to plumber's inspected & approved gas line. gas check system
Valuation:
$250
Permit #:
21-80P
Status:
complete
Fee:
$36
Permit Type:
Miscellaneous (re...
Building Type:
N/A
Reinstall 2 existing 120 gallon propane tanks with buoyancy offsets and install viessmmann propane boiler
Valuation:
$5,697
Permit #:
PL-17-0255
Status:
issued
Fee:
$60
Permit Type:
Existing
Building Type:
N/A
Remove existing propane tank set i 120 gallon tank and run gas line to space heater
Valuation:
$881
Permit #:
PL-16-0732
Status:
issued
Fee:
$10
Permit Type:
N/A
Building Type:
N/A
Tee into the existing in house gas line to fuel automatic standby generator
Valuation:
$1,450
Permit #:
21-12M
Status:
expired
Fee:
$50
Permit Type:
Mechanical stand ...
Building Type:
N/A
Run gas line from existing tank to vent free space heater
Valuation:
$458
Permit #:
PL-17-0023
Status:
issued
Fee:
$10
Permit Type:
Existing
Building Type:
N/A
Set 2 120 gallon hor. propane tanks run gas line to stub out
Valuation:
$96
Permit #:
PL-16-0773
Status:
complete
Fee:
$25
Permit Type:
N/A
Building Type:
N/A
Set (1) 120 gallon propane tank run gas line to log set
Valuation:
$1,870
Permit #:
PL-16-0248
Status:
issued
Fee:
$35
Permit Type:
N/A
Building Type:
N/A
Set 250 gallon propane tank (above ground) and run gas line in trench to generator
Valuation:
$2,245
Permit #:
17-105M
Status:
complete
Fee:
$63
Permit Type:
Residential mecha...
Building Type:
N/A
Set 1 120 asme propane tank run gas line to space heater
Valuation:
$1,025
Permit #:
PL-15-0852
Status:
complete
Fee:
$35
Permit Type:
N/A
Building Type:
N/A
Stair case seperation wall to existing inner tenant space
Valuation:
$17,000
Permit #:
20111247
Status:
I
Fee:
N/A
Permit Type:
Commercial buildi...
Building Type:
N/A
Set (2) 120 gallon propane tanks run gas line to generator
Valuation:
$1,636
Permit #:
16-15P
Status:
complete
Fee:
$50
Permit Type:
Residential mecha...
Building Type:
N/A
Run 1/2 csst gas line to kitchen from existing tank
Valuation:
$712
Permit #:
16-28P
Status:
complete
Fee:
$36
Permit Type:
Residential plumbing
Building Type:
N/A
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BZ Score
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JJ Sullivan Inc License info
Verified License
| License # | HIC.0582632 |
| Status | Active |
| State | Connecticut |
| Type | Home Improvement Contractor |
| Date Issued | 04-01-2026 |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for JJ Sullivan Inc at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
21
Permits
- Building permit records show that JJ Sullivan Inc has worked on 21 permitted projects.