Updated: Jul 06, 2026
Location and Projects
Address
Middletown, DE, 19709
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Christiana Mechanical, Inc
Christiana Mechanical, Inc, Middletown, DE (Employee: Theresa Sill) holds a Resident Contractor license according to the New Castle County license board.
Their BuildZoom score of 107 ranks in the top 6% of 8,071 Delaware licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Christiana Mechanical, Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Christiana Mechanical, Inc Contact Information
Phone Number: (302) 378-7308
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Building Permits by Christiana Mechanical, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replacement plumbing inside underground plumbing gas test 6 fixtures 1 water heater(s) complete rough to finish plumbing consisting of (1) kitchen sink (1) toilet (1) lavatory (1) shower (1) laundry tub (1) laundry box and (1) tankless water heater. also run natural gas line to (1) house generator (1) water heater and (1) stove
Valuation:
N/A
Permit #:
202500156
Status:
issued
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Replacement plumbing inside underground plumbing 3 fixtures complete rough to finish plumbing of a new basement bathroom consisting of (1) tub (1) toilet and (1) lavatory
Valuation:
N/A
Permit #:
202501800
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Replacement plumbing gas test 5 fixtures rough to finish plumbing consisting of (1) kitchen sink (1) toilet (1)tub shower (1) double vanity and (1) guy grey box. we will also relocate gas lines to range and dryer
Valuation:
N/A
Permit #:
202506779
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Install (2) ductless mini split heat pump system in residence. each unit is 12.200 btu heating and 12.00 btu (1 ton) cooling. zokop model tsc-12ha2/12xi19
Valuation:
N/A
Permit #:
202506396
Status:
final
Fee:
$365
Permit Type:
N/A
Building Type:
Residential
Replacement plumbing 4 fixtures rough plumbing (only) of future fitout in garage addition consisting of (1) laundry tub (1) toilet (1) sink and (1) shower. *(rev. _______ ductwork - adding additional hydronic copper piping zone on existing boiler for addition and replacing air condition for addition)*
Valuation:
N/A
Permit #:
202504927
Status:
issued
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Replacement plumbing 2 fixtures rough to finish plumbing of (1) sink and (1) hose bib in outside patio grill area. drain to run to leach field in yard
Valuation:
N/A
Permit #:
202508357
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Replacement hvac unit(s) duct work install owner supplied medical chiller. install 1 liebert air conditioning unit. relocate 1 heat pump. minor duct work install building permit 202509790
Valuation:
N/A
Permit #:
202512696
Status:
issued
Fee:
$1,071
Permit Type:
Replacement
Building Type:
Commercial
New plumbing inside underground plumbing gas test 2 water heater(s) install plumbing piping and equipment. install gas piping
Valuation:
N/A
Permit #:
202500764
Status:
final
Fee:
$1,575
Permit Type:
Replacement
Building Type:
Industrial
Replacement plumbing gas test 1 fixtures run a new gas service from the new meter location to the 20 000 btu dryer. provide 3 valved and capped for future branch lines
Valuation:
N/A
Permit #:
202510092
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Replacement hvac unit(s) duct work 2 water heater(s) demolish and replace all duct work fcu's vav's and mechanical piping. unit will be swapped out on roof connected to building permit 202207024
Valuation:
N/A
Permit #:
202410176
Status:
issued
Fee:
$18,900
Permit Type:
Replacement
Building Type:
Commercial
Replacement plumbing 25 fixtures 5 water heater(s) demolish replace (2) gang bathrooms and water cooler. addition (2) bathrooms addition (1) sink addition (5) water heaters and addition (1) drinking fountain
Valuation:
N/A
Permit #:
202215485
Status:
final
Fee:
$525
Permit Type:
Replacement
Building Type:
Commercial
Replacement plumbing 13 fixtures 1 water heater(s) rough to finish plumbing of (1) kitchen sink (1) bar sink (2) full bathrooms (1) 1/2 bathroom (1) laundry box and (1) 50 gallon electric water heater
Valuation:
N/A
Permit #:
202402476
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
New plumbing inside underground plumbing install sanitary mains - waste and vent above and below grade. install water mains and pumps. install rain water conductors above and below grade
Valuation:
N/A
Permit #:
202301617
Status:
final
Fee:
$4,932
Permit Type:
New construction
Building Type:
Industrial
Replacement plumbing 5 fixtures 1 water heater(s) complete rough to finish plumbing consisting of (1) toilet (1) lavatory sink (1) tub shower (1) laundry box and (1) kitchen sink
Valuation:
N/A
Permit #:
202415724
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
Replacement plumbing inside underground plumbing 4 fixtures rough to finish plumbing in a converted garage consisting of (1) toilet (1) shower (1) lavatory and (1) kitchen sink
Valuation:
N/A
Permit #:
202413187
Status:
final
Fee:
$65
Permit Type:
Replacement
Building Type:
Residential
New plumbing 19 fixtures 1 water heater(s) interior plumbing fit out. rough in (6) toilets (1) water heater (1) drinking fountain (2) urinals (8) lav (1) mop sink. *(rev.9/28/2024:add 6 bathrooms to existing warehouse.)*
Valuation:
N/A
Permit #:
202400809
Status:
final
Fee:
$705
Permit Type:
New construction
Building Type:
Industrial
Replacement hvac unit(s) duct work demolish chiller, 2 vavs duct work backup water for chiller. install new chiller 2 split systems new duct work 2 vavs
Valuation:
N/A
Permit #:
202207666
Status:
final
Fee:
$788
Permit Type:
Replacement
Building Type:
Exempt commercial
Replacement hvac unit(s) duct work attached to building permit #202213887. demolish replace duct work and vav's. addition exhaust fan and duct work
Valuation:
N/A
Permit #:
202215487
Status:
final
Fee:
$2,998
Permit Type:
Replacement
Building Type:
Commercial
Replacement plumbing inside underground plumbing 6 fixtures demolish existing. we will be doing work on the ground floor to include underground sanitary piping vent cold & hot water piping. we will furnish & install (10 kitchen sink (4) lav's (4) toilets and (1) wub for coffee machine. building permit 202014834
Valuation:
N/A
Permit #:
202102232
Status:
final
Fee:
$205
Permit Type:
Replacement
Building Type:
Commercial
Replacement plumbing inside underground plumbing 4 fixtures 1 water heater(s) this project is a kiosk at the christiana mall- iinstalling cold water hot water sanitary and vent for (3) floor sinks (1) prep sink (1) 3 comparable sink (1) mop sink (1) hand sink and a 40 gallon water heater. building permit # 202100660
Valuation:
N/A
Permit #:
202102488
Status:
final
Fee:
$142
Permit Type:
Replacement
Building Type:
Commercial
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Verified License
BuildZoom confirmed this contractor's license
Christiana Mechanical, Inc License info
Verified License
| License # | 1996100639 |
| Status | Active |
| State | New Castle County |
| Type | Resident Contractor |
| Date Issued | 01-01-2026 |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Christiana Mechanical, Inc at the State of Delaware Department of Finance: Division of Revenue.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
165
Permits
- Building permit records show that Christiana Mechanical, Inc has worked on 165 permitted projects.
Christiana Mechanical, Inc Employees
TS
Theresa Sill
President