Updated: Mar 27, 2026
Location and Projects
Address
4809 242ND AVE SE, Sammamish, WA, 98029
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Thornberg Construction Co Inc Photos
Thornberg Construction Co Inc
Thornberg Construction Co Inc, 4809-242 Nd Ave SE, Sammamish, WA (Owned by: Ted Jenneskens) holds a Construction Contractor, General license and 3 other licenses according to the Tukwila license board.
Their BuildZoom score of 114 ranks in the top 2% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Thornberg Construction Co Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Thornberg Construction Co Inc Services
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Thornberg Construction Co Inc Contact Information
Phone Number: (425) 391-6766
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Address: 4809 242ND AVE SE, Sammamish, WA 98029
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Thornberg Construction Co Inc Sammamish
Quality
114
98th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Thornberg Construction Co Inc has a BuildZoom score of 114, which places them above 98% of 128,670 contractors in Washington.
Activity
|
7 projects
|
2025 |
|
5 projects
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that Thornberg Construction Co Inc has worked on at least
16.0 projects 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.
Experience
|
10 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Thornberg Construction Co Inc mostly works on
home addition
projects.
Pricing
|
1 project
|
$20k-$50k |
|
1 project
|
$100k-$250k |
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.
Building Permits by Thornberg Construction Co Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Change of occupancy - 2021 ibc - prime time montessori school - change of occupancy group r-3 to group e; the existing school (group e -- located at the lower level currently) is expanding to the main (upper) floor (currently r-3.) changing occupancy type to group e scope of work: reduction/alteration of existing main floor residence to a ± 273 sf studio sized space changing the occup... see more
Valuation:
$175,000
Permit #:
BLDG-2025-04079
Status:
applied
Fee:
$5,575
Permit Type:
N/A
Building Type:
N/A
Type: building single family class: alteration to structure or system (2021) herrera remodel: scope of work includes: addition bathroom & bedroom @ basement level insulate basement walls per plan new kitchen cabinets raise existing sunken living room no change to existing footprint or lot coverage. (psf24-06941)
Valuation:
N/A
Permit #:
BSF24-05572
Status:
issued
Fee:
$2,648
Permit Type:
N/A
Building Type:
N/A
Commercial tenant improvement - 2018 - montessori school - basement level montessori school tenant improvement to include converting existing office to added classroom space on main floor and adding a new closet and toddlers toilet room from existing mechanical in daylight basement. basement is group e occupancy. refer to bldg-2013-05918 for co no change of occupant load or occupancy ... see more
Valuation:
$50,000
Permit #:
BLDG-2023-01556
Status:
final
Fee:
$2,594
Permit Type:
N/A
Building Type:
N/A
Type: mechanical single family class: addition to structure, , henry & vant addition : mechanical for bsf23-05023. the furnace services the existing house. ductless mini added to the plan to heat the new area. heat sizing worksheet remains showing addition only
Valuation:
N/A
Permit #:
MSF23-08174
Status:
final
Fee:
$350
Permit Type:
N/A
Building Type:
N/A
Type: plumbing single family class: addition to structure pereira addition: plumbing related to bsf23-05282 -(adding 2 new bathrooms at 2nd lvl -- 2 waterclosets 2 showers 2 lavs) *previous psf20-03880* (942 sf upper floor addition; 47 sf upper floor deck addition)
Valuation:
N/A
Permit #:
PSF23-06283
Status:
issued
Fee:
$168
Permit Type:
N/A
Building Type:
N/A
Type: mechanical single family class: addition to structure, , bsf23-06228 *pitts addition and remodel : new 70 sf main floor addition @ existing porch & interior kitchen and upper bathroom remodel
Valuation:
N/A
Permit #:
MSF23-07690
Status:
final
Fee:
$277
Permit Type:
N/A
Building Type:
N/A
Type: building single family class: addition to structure, , *atkins residence addition : 25 sf new porch 74 sf main floor addition & 683 sf upper floor addition to existing single family residence
Valuation:
N/A
Permit #:
BSF24-02802
Status:
final
Fee:
$6,020
Permit Type:
N/A
Building Type:
N/A
Type: mechanical single family class: addition to structure pereira addition: mechanical related to bsf23-05282 -heat pump and ductwork *previous msf20-03881* (942 sf upper floor addition; 47 sf upper floor deck addition)
Valuation:
N/A
Permit #:
MSF23-06281
Status:
issued
Fee:
$139
Permit Type:
N/A
Building Type:
N/A
Tenant improvement - pine lake covenant church , remodel lower level (approx. 7, 178 s.f.) of existing church building. work included demolition of non-structural partitions finishes and casework of classrooms fellowship hall and residential kitchen. reconfigure classrooms and residential kitchen incorporate new community room. new finishes throughout. addition 6 new exterior windows
Valuation:
N/A
Permit #:
COM2019-05832
Status:
issued
Fee:
$3,258
Permit Type:
N/A
Building Type:
N/A
Rework existing m.bath addition shower to lower powder room
Valuation:
N/A
Permit #:
25 111425 BU
Status:
plancheck
Fee:
$634
Permit Type:
N/A
Building Type:
N/A
Type: building single family class: addition to structure *renewed for 6 month* pereira: 942 sf upper floor addition; 47 sf upper floor deck addition *sprinklers required* (superseding work started on permit bsf20-02754)
Valuation:
N/A
Permit #:
BSF23-05282
Status:
issued
Fee:
$5,326
Permit Type:
N/A
Building Type:
N/A
Type: building single family class: addition to structure, , *henry & vant addition: 584 sf main floor addition and 498sf deck off rear of existing single family residence
Valuation:
N/A
Permit #:
BSF23-05023
Status:
final
Fee:
$5,665
Permit Type:
N/A
Building Type:
N/A
Giaimo residence 180 demolish and rebuild rebuild residence at 180 se bush st in olde town issaquah
Valuation:
N/A
Permit #:
BLD24-00016
Status:
expired
Fee:
$99,418
Permit Type:
N/A
Building Type:
N/A
Type: building single family class: addition to structure *pitts addition and remodel : new 70 sf main floor addition @ existing porch & interior kitchen and upper bathroom remodel
Valuation:
N/A
Permit #:
BSF23-06228
Status:
final
Fee:
$2,339
Permit Type:
N/A
Building Type:
N/A
Type: building single family class: addition to structure, , cholewinski - extend the existing garage. extend the existing lower floor bedroom and extend the upper floor master bedroom. mechanical work is not included.; plumbing work is not included;
Valuation:
N/A
Permit #:
BSF20-02323
Status:
final
Fee:
$3,897
Permit Type:
N/A
Building Type:
N/A
Infinger single family residence house w/attached adu, construct new detached single family dwelling and detached garage with adu above
Valuation:
N/A
Permit #:
BLD20-00094
Status:
final
Fee:
$119,990
Permit Type:
N/A
Building Type:
N/A
Remodel - parry/johnson the scope of this project is to remodel 601 s.f. of main floor of residence. the changes includeadding a large patio slider to deck from living room space moving the existing gas fireplace tonorth wall of living room space. the kitchen which currently opens to the living space willhave all new cabinets and counters and the existing gas stove top will move to t... see more
Valuation:
N/A
Permit #:
BLD2020-02761
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type: mechanical single family class: addition to structure, , bsf22-03246 maier: 825 sf main floor addition to existing single family residence
Valuation:
N/A
Permit #:
MSF22-05066
Status:
final
Fee:
$254
Permit Type:
N/A
Building Type:
N/A
Tree strike damage repair - ducharme
Valuation:
N/A
Permit #:
BLD2025-00130
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Type: plumbing single family class: addition to structure, , atkins residence addition : bsf24-02802
Valuation:
N/A
Permit #:
PSF24-05727
Status:
final
Fee:
$87
Permit Type:
N/A
Building Type:
N/A
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173
BZ Score
-
Avg Project
-
Projects
165
BZ Score
-
Avg Project
-
Projects
164
BZ Score
$32.4K
Avg Project
-
Projects
Thornberg Construction Co Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Thornberg Construction Co Inc License info
Verified License
| License # | THORNCC055CS |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Corporation |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Thornberg Construction Co Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | THORNCC055CS |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Thornberg Construction Co Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | THORNCC055CS |
| Status | Active |
| City | Sammamish |
| Type | Contractor |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of March, 2021. Check the current license status of Thornberg Construction Co Inc with the The City of Sammamish, WA
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 601599548 |
| Status | Active |
| City | Sammamish |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of December, 2021. Check the current license status of Thornberg Construction Co Inc with the The City of Sammamish, WA
This is a sample of licensing data; click here to access a complete history.
114
BuildZoom Score
Insured
| Insurer | Arch Specialty Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bond Value | $12,000 |
228
Permits
- Building permit records show that Thornberg Construction Co Inc has worked on 228 permitted projects.
Thornberg Construction Co Inc Employees
BA
Bair, Ronald Aaron
Owner
MB
Mitchell Blair
Member
RB
Ronald Bair
Vice President
TJ
Ted Jenneskens
Owner
TJ
Ted Jenneskens
Owner
TJ
Theodore Jenneskens
President