Updated: Jun 11, 2026
Location and Projects
Address
5225 SW 324TH PLACE, Federal Way, WA, 98023
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Retrofit Construction
Serving Federal Way, Washington, Retrofit LLC brings six years of industry experience to residential and commercial projects in the local area. The company provides construction and renovation services designed to strengthen existing structures and modernize properties. Retrofit LLC’s project portfolio includes upgrades aimed at improving building safety, energy efficiency, and functionality. By working with both homeowners and business property owners, the company addresses a variety of needs, such as structural retrofitting, remodeling, and property updates. Retrofit LLC focuses on solutions that help extend the life of buildings and adapt spaces to meet current standards. The company’s project management process emphasizes clear communication and practical methods tailored to each individual client and property.
Retrofit LLC Services
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Retrofit LLC Contact Information
Phone Number: (532) 306-8100
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Address: 5225 SW 324TH PLACE, Federal Way, WA 98023
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Retrofit LLC Federal Way
Quality
96
80th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Retrofit LLC has a BuildZoom score of 96, which places them above 80% of 128,670 contractors in Washington.
Activity
|
1 project
|
2023 |
Our building permit records indicate that Retrofit LLC 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-$20k |
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.
Relocate clothes washer/dryer to garage. re-arrage sink/toilet in laundry to allow addition of barrier free shower on first floor in the existing laundry room space. 1 clothes washer 1 shower/valve replacement 1 toilet 1 bathroom sink 2018 upc
Valuation:
$25,000
Permit #:
PLUM-2021-08258
Status:
final
Fee:
$234
Permit Type:
N/A
Building Type:
N/A
Rearrangement of front service counter. requires relocation/new floor sinks install of new work sinks and re-installation of existing equipment. 2 backflow preventer & vacuum breaker 1 grease interceptor 2 sink (floor/mop) 2 other (work sinks) 1 under counter dishwasher. 2018 upc
Valuation:
$10,000
Permit #:
PLUM-2021-02486
Status:
final
Fee:
$588
Permit Type:
N/A
Building Type:
N/A
2018 upc - installation of new plumbing system for pasta production only. 1 electric water heater 3 floor drain 1 grease interceptor 1 sink (floor) 1 sink (kitchen) 1 sink (utility) 1 sink (3 compartment) 1 other - prep sink
Valuation:
$10,000
Permit #:
PLUM-2021-02428
Status:
final
Fee:
$723
Permit Type:
N/A
Building Type:
N/A
Addition of two restrooms and drinking fountain. new water heater. (1) drinking fountain (1) electric water heater (2) bathroom sinks (2) toilets 2018 upc
Valuation:
$10,000
Permit #:
PLUM-2023-04409
Status:
final
Fee:
$345
Permit Type:
N/A
Building Type:
N/A
5 guys - suite 100 - install new plumbing for restaurant including full kitchen and two ada singel use restrooms. includes (1) back flow device (5) floor drains (2) sinks(bathroom) (5) sinks(floor/mop) (2) sinks(3-compartment) and (2) toilets. total of (17) fixtures
Valuation:
$30,000
Permit #:
PLUM-2020-00399
Status:
final
Fee:
$1,076
Permit Type:
N/A
Building Type:
N/A
5 guys - suite 100 - run new gas piping to 2 friers 2 griddles and 1 hot water heater. customer paid for (5) gas piping (1) water heater and (4) restaurant appliances
Valuation:
$4,000
Permit #:
MECH-2020-00398
Status:
final
Fee:
$177
Permit Type:
N/A
Building Type:
N/A
Quadrant 95 at willows - building b - relocate 1 kitchen sink addition 1 mop sink and 1 electric water heater
Valuation:
$1,500
Permit #:
PLUM-2020-02141
Status:
final
Fee:
$197
Permit Type:
N/A
Building Type:
N/A
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173
BZ Score
-
Avg Project
-
Projects
164
BZ Score
-
Avg Project
-
Projects
164
BZ Score
$32.4K
Avg Project
-
Projects
Retrofit LLC Reviews
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Verified License
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Retrofit LLC License info
Verified License
| License # | RETROL*877JH |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Retrofit LLC at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | RETROL*877JH |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Retrofit LLC 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 # | ARMSTM 902M8 |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, General |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of July, 2014. Check the current license status of Retrofit LLC with the Washington State Department of Labor & Industries
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | ARMSTM*902M8 |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- According to the Washington State Department of Labor & Industries, 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 Retrofit LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
96
BuildZoom Score
Insured
| Insurer | Security National Insurance |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Wesco Insurance Co |
| Bond Value | $12,000 |
6
Permits
- Building permit records show that Retrofit LLC has worked on 6 permitted projects.
Retrofit LLC Employees
FS
Filippov Anatolyevic, Sergey
Governing Persons
FA
Filippov, Sergey A
Governing Persons
FA
Filippov, Sergey Anatolyevich
Partner/Member
O
Owner
Owner
SF
Sergey Filippov
Partner/Member