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Location and Projects

Headquarters Address
385 Interlocken Crescent, Broomfield, CO, 80021
Local address
1400 TALBOT RD S, Renton, WA, 98055
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Flatiron West Construction

Flatiron West Inc operates in Renton, WA, with a primary focus on heavy civil construction projects. Serving clients throughout the greater Seattle area, the company specializes in large-scale infrastructure developments such as bridge construction, highway improvements, transit facilities, and airport projects. Flatiron West Inc’s project portfolio features work on regional transportation systems, including transit stations, interchanges, road widening, and environmental restoration associated with public works. The firm partners with public agencies and private entities on complex civil engineering endeavors, managing both new construction and major upgrades of existing infrastructure. With over a decade of experience, Flatiron West Inc applies advanced construction methods and project management practices to deliver projects in high-traffic and environmentally sensitive areas. The company emphasizes collaboration with engineers, architects, and local jurisdictions to ensure compliance with safety and environmental regulations on every project.

Flatiron West Inc Contact Information

Phone: (425) 420-9900 Edit
Headquarters Address: 385 Interlocken Crescent, Broomfield, CO, 80021
Local Address: 1400 TALBOT RD S, Renton, WA 98055 Edit

Flatiron West Inc Renton

Quality

108
95th percentile
How is the BuildZoom score calculated?
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Flatiron West Inc has a BuildZoom score of 108, which places them above 95% of 128,670 contractors in Washington.

Activity

13 projects
 2025
20 projects
 2024
21 projects
 2023
Our building permit records indicate that Flatiron West Inc has worked on at least 54.0 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.

Pricing

1 project
 $5k-$20k
Value Not Public: 49.0 projects
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 Flatiron West Inc

Sort by: Notable Notable | Date Date | Job Value Job Value

This is a sample of this contractor's permits. Click here to access their complete permit history.

Storm connection
119 Th Ave SE, Bellevue, WA, 98006
2025-02-18
While installing drainage as part of the i-405 renton to bellevue project fljv discovered an existing 12 concrete pipe outfall into the cab 10.00 work zone area. this pipe is shown on the city gis and flows towards cab 10.00. fljv's designers have modified the project design to connect this outfall pipe/connection into the cab 10.00 drainage system
Valuation:
N/A
Permit #:
25 104137 UB
Status:
canceled
Fee:
$434
Permit Type:
N/A
Building Type:
N/A
Building Permit
Nb I 405 2 Right Ln, #90, Bellevue, WA
2025-08-29
Fljv will take a full weekend closure of 2 nb i-405 right lanes as well as the ne 4th&8th on and off ramps beginning on 9-5-25 and ending on 9-8-25 for the purpose of pavement demolition pavement replacement restriping and the installation of drainage crossings
Valuation:
N/A
Permit #:
25 120431 TK
Status:
issued
Fee:
$1,562
Permit Type:
N/A
Building Type:
N/A
Building Permit
Nb I, #405, Bellevue, WA
2025-01-15
Setup traffic control at lake washington blvd. se i-405 ramp terminals to implant the interim striping and signing for the construction of the roundabout at the ramp terminal
Valuation:
N/A
Permit #:
25 101458 TK
Status:
issued
Fee:
$729
Permit Type:
N/A
Building Type:
N/A
Building Permit
NE Full Closure Of Sb I, #405, Bellevue, WA
2025-09-08
Detour through city of bellevue row for fljv will implement 2 full weekend closures of sb i-405 from the coal creek parkway on ramp to the ne 30th st. off ramp to complete drainage crossings pavement replacements and install the next phase of mot to support project construction. the first full weekend closure will take place between 9-12-25 and 9-15-25 and the 2nd closure will take pl... see more
Valuation:
N/A
Permit #:
25 120680 TK
Status:
issued
Fee:
$2,109
Permit Type:
N/A
Building Type:
N/A
Building Permit
Sb I 405 On And Off Ramps To Ne St, #44th, Bellevue, WA
2025-07-15
Detour traffic will be routed through 112th ave se to accommodate work within wsdot and city of renton jurisdictions as illustrated in the site plans. fljv will implement a full weekend closure starting at 11:00 pm on friday july 18 2025 and ending at 4:00 am on monday july 21 2025
Valuation:
N/A
Permit #:
25 116630 TK
Status:
issued
Fee:
$729
Permit Type:
N/A
Building Type:
N/A
Building Permit
Nb I Pkwy, #405, Bellevue, WA
2025-06-02
Fljv will take full weekend closure of nb 405 currently planned between southport drive in the city of renton and coal creek parkway in city of bellevue. for the work being performed in the wsdot row
Valuation:
N/A
Permit #:
25 111809 TK
Status:
issued
Fee:
$712
Permit Type:
N/A
Building Type:
N/A
Building Permit
Nb I Pkwy, #405, Bellevue, WA
2024-09-05
Fljv will take a full weekend closure of nb i-405 from southport dr. to coal creek parkway. this work is anticipated to take place during the weekend of 9/27-9/30. the work includes drainage crossings fish passage 10 excavation and reconstruction fiber removal and replacement bridge approach slabs and joint seals removal of a cabs pad at the ne 44th direct access ramps wall fascia con... see more
Valuation:
N/A
Permit #:
24 120001 TK
Status:
issued
Fee:
$1,414
Permit Type:
N/A
Building Type:
N/A
Building Permit
335 116th Ave SE, Bellevue, WA, 98004
2024-10-25
Fljv will construct retaining wall 13.00r within the wsdot row. this wall requires a 6'-8 cut along the shoulder of nb i-405. this will most likely cut the roots of the tree. cutting of the roots could compromise the stability of the tree where it would fall onto i-405. the tree has dual trunks that are braced by a cable currently at about 30 height
Valuation:
N/A
Permit #:
24 119519 GB
Status:
issued
Fee:
$938
Permit Type:
N/A
Building Type:
N/A
Building Permit
Nb I 405 2 Right Ln, #90, Bellevue, WA
2024-07-17
Fljv will take a full weekend closure of 2 right lanes on nb i-405 from i-90 to north of the ne 4th ave. ne ne 8th st. off ramp and of nb se 8th st on ramp to complete raising the profile of the nb ne 4th st. off ramp and complete gore paving
Valuation:
N/A
Permit #:
24 116370 TK
Status:
issued
Fee:
$363
Permit Type:
N/A
Building Type:
N/A
Building Permit
Sb, Bellevue, WA
2024-06-25
Fljv will close the sb i-405 to 112th off ramp 112th to sb i-405 on ramp 112th to nb i-405 on ramp and implement one way flagging on lake wa blvd se over i-405 to complete grading and paving activities install drainage within wsdot row and shift traffic to the new bridge over i-405. this is preparation for the future weekend closure to demolish the existing lake wa blvd se bridge over... see more
Valuation:
N/A
Permit #:
24 113620 TK
Status:
issued
Fee:
$2,813
Permit Type:
N/A
Building Type:
N/A
Building Permit
Nb I 405 From Ne 30th To Pkwy, #112th, Bellevue, WA
2024-06-17
Fljv will implement a full weekend closure of nb i-405 from ne 30th st. to 112th and on sb i-405 from ne 30th to coal creek pkwy to complete the installation of fish passage 7.7a demolish the existing 112th bridge over i-405 and install 8 drainage crossings. all work is within wsdot row with detours routed through city row
Valuation:
N/A
Permit #:
24 112425 TK
Status:
issued
Fee:
$1,359
Permit Type:
N/A
Building Type:
N/A
Building Permit
Along Lake Washington Blvd SE, Bellevue, WA
2024-06-24
Post revision # 1: pse will use the one-lane flagging during the night of 9/15 from 12am-4am to reframe/raise oh power lines spanning i-405 from lwb se. fljv is constructing wall 9.35l which requires installation of soldier piles and drilling of tiebacks. due to the proximity of the retaining wall along lake wa blvd se fljv wants to reduce lake washington blvd se to a single lane main... see more
Valuation:
N/A
Permit #:
24 105785 TK
Status:
issued
Fee:
$30,955
Permit Type:
N/A
Building Type:
N/A
Building Permit
SE 8th St, Bellevue, WA
2024-02-29
Post revision # 2: adding detour plan for se 8th to nb i-405 on ramp is closed. post revision # 1: adding tc-66 and tc-67 have been added at the se 8th st location to provide a single outside lane closure in either the eb or wb direction. setup traffic control\detour on se 8th st. for the following construction activities: 1- eb and wb right lane closure mot on se 8th for pier 2 and 3... see more
Valuation:
N/A
Permit #:
24 103504 TK
Status:
issued
Fee:
$69,018
Permit Type:
N/A
Building Type:
N/A
Building Permit
Nb, Bellevue, WA
2024-02-21
Traffic control plans and detour traffic within city of bellevue row for the demolishing of existing retaining wall underneath main street and install drainage structures within wsdot row
Valuation:
N/A
Permit #:
24 103460 TK
Status:
issued
Fee:
$900
Permit Type:
N/A
Building Type:
N/A
Building Permit
SW Corner Of Coal Creek Pkwy SE, Bellevue, WA
2023-06-20
Post revision # 4&5: traffic control plan allows for the closure of the sb i-405 on ramp from coal creek pkwy. the detour related to this closure within wsdot row places traffic control elements on coal creek pkwy. post revision # 3: tcp amendment for 2 lanes closure on coal creek pkwy and one left turn lane closed on sb405 to coal creek pkwy exit. post revision # 2: tcp amendment add... see more
Valuation:
N/A
Permit #:
23 111122 TK
Status:
issued
Fee:
$60,416
Permit Type:
N/A
Building Type:
N/A
Building Permit
Crossing Pkwy, #120th, Bellevue, WA
2025-04-17
Trench and install the drainage as highlighted in green on the site plan that crosses coal creek parkway. as approved under 24 117936 ub
Valuation:
N/A
Permit #:
25 108718 TK
Status:
issued
Fee:
$486
Permit Type:
N/A
Building Type:
N/A
Utility extension
Lake Wa Blvd Se North From The Sb I Ln, #405, Bellevue, WA
2025-08-29
Fljv will install remove and replace pip or clean storm drainage as shown on the attached site plan. this permit is submitted as requested by the city to replace permit 24 112795 ub
Valuation:
N/A
Permit #:
25 100376 UE
Status:
issued
Fee:
$3,940
Permit Type:
N/A
Building Type:
N/A
Building Permit
Main Street Brg, Bellevue, WA
2022-03-10
**rev 6 - main st paving including nb lane closures on 112th ave. tjs 11/02/22 **rev 5 - 114th ave slip ramp closure. tjs 09/01/22 **rev 4 - nightly directional closures on 405 for girder sets. tjs 08/01/22 **rev 3 - issued for work that had already been done. tjs 06/17/22 **rev 2 - approval of flaggers for construction access on east side of freeway. tjs 05/24/22 **rev 1 - 60-day sid... see more
Valuation:
N/A
Permit #:
21 134229 TK
Status:
issued
Fee:
$98,341
Permit Type:
N/A
Building Type:
N/A
Sign awning and canopy permit
6185 4th Ave NW, Seattle, WA, 98107
2023-03-16
Gwwts lighted signs king county's new georgetown wet weather treatment station will have two lighted signs. one at the main entrance to the facility off 4th avenue south and one in front of the operations and maintenance building. 10/19/22 ss: corrections noted: 1. a qualified electrical contractor is required to install electrical signs. 2. contractor to provide manufacturers constru... see more
Valuation:
$14,000
Permit #:
6927850-SB
Status:
complete
Fee:
$419
Permit Type:
N/A
Building Type:
Industrial
Building Permit
Sb, Bellevue, WA
2024-08-29
Fljv will take a full weekend closure on sb i-405 between coal creek parkway and ne 30th st. to complete work at br23w in renton install temporary sheet pile shoring near the 112th to sb 405 on ramp construct drainage crossings and switch sb traffic to the new sb bridge over coal creek parkway
Valuation:
N/A
Permit #:
24 119783 TK
Status:
issued
Fee:
$2,555
Permit Type:
N/A
Building Type:
N/A

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