About Basement Expert
Engineering-Grade Foundation & Basement Waterproofing Specialists
Headquartered in Lynnwood, WA · Serving Seattle, Bellevue, Everett & the Greater Puget Sound · NDS-Certified & Public Works Trained
Engineering-Grade Water Management & Structural Solutions
At Basement Expert, we don’t just “patch” leaks—we solve the hydraulic and structural forces that threaten your property. Headquartered in Lynnwood, WA (20722 12th Ave W) and serving the entire Greater Seattle and Puget Sound region—including Seattle, Bellevue, Kirkland, Shoreline, Everett, and Marysville—we specialize in high-stakes sub-slab drainage, exterior foundation waterproofing, and structural foundation reinforcement.
Our Technical Standard
As an NDS-Certified Drainage Contractor and Public Works Trained specialist, our team operates under strict municipal standards of engineering accountability and precision. We understand the exact geotechnical challenges of Pacific Northwest hillsides and basins, where rain-saturated water perches on impermeable Vashon glacial till and expansive Seattle blue clay, creating severe lateral and sub-slab hydrostatic pressure against residential and commercial foundations.
Why We Are Different: Active Water Diversion vs. Passive Barriers
Unlike companies that focus on crawlspace or basement “encapsulation” (trapping moisture behind plastic liners while hydrostatic pressure continues to degrade the concrete), Basement Expert specializes in Active Water Diversion and Structural Integrity:
- We Relieve Hydrostatic Pressure at the Source: We engineer gravity-fed and pumped drainage pathways at the footing level using rigid, smooth-wall SDR-35 PVC pipe, 1.5-inch washed round drainage rock, J-DRAIN 400 dimple membranes, and cast-iron sump pump systems with battery backups.
- Structural Foundation Excellence: Water intrusion and structural movement go hand in hand. We reinforce bowing foundation walls, cracked footings, foundation belts, and failing retaining walls using high-tensile 350,000 psi carbon fiber structural straps and steel stabilization systems.
- Below-Grade Garage & Commercial Specialists: We design heavy-duty trench drains, elastomeric exterior membranes, and high-capacity discharge systems for below-grade hillside garages and multi-unit commercial buildings across King and Snohomish Counties.
We believe a permanently dry basement starts with a depressurized, structurally sound foundation. Our mission is to deliver code-compliant, open-spec engineering that protects your property value for decades—not just seasons.
Regional Industry Comparison
How Basement Expert Differs from High-Volume Waterproofing Franchises
When homeowners and property managers across Greater Seattle evaluate foundation waterproofing and drainage contractors, they frequently compare our engineering-first approach against high-volume regional and national franchise operators such as Groundworks, TerraFirma Foundation Systems, John’s Waterproofing, and Rainy Day Crawl Space & Basement Systems.
While mass-market waterproofing franchises rely heavily on commissioned sales representatives, proprietary plastic encapsulation packages, and above-footing interior gutters, Basement Expert was built to serve homeowners who want transparent, engineering-grade construction:
- NDS-Certified Drainage Engineering: Every system is designed around the physics of groundwater hydrology, soil permeability, and footing-level pressure relief—never one-size-fits-all franchise kits.
- Active Diversion Over Plastic Encapsulation: We do not sell crawlspace encapsulation or mask wet walls behind plastic sheeting. We physically intercept and evacuate groundwater before it can pressurize your slab or foundation walls.
- Open-Spec Commercial Materials: Instead of proprietary plastic channels that restrict serviceability, we install commercial civil-engineering materials—rigid SDR-35 PVC, washed round rock, non-woven geotextile filter fabric, and commercial elastomeric membranes.
- Puget Sound Glacial Till & Clay Mastery: Our trenching depths, aggregate gradations, and discharge calculations are specifically calibrated for the perched water tables, Glacial Till, and Blue Clay geology of Seattle, Bellevue, Lynnwood, and Everett.
Ready for a Technical Evaluation? Skip the 3-hour commissioned sales pitch. Contact Basement Expert for an NDS-certified structural and drainage inspection of your property.
Our Philosophy: Diagnostics Before Prescription
Transparency is the foundation of our work. We believe in professional vs. sales waterproofing inspections, providing objective, unit-priced engineering assessments rather than high-pressure sales tactics. From the moment you schedule, you can see exactly what to expect from a Basement Expert crew on your property. And if you are currently experiencing an active leak or standing water in your basement, our team provides rapid guidance on preventing secondary flood damage while we engineer a permanent mechanical fix.
Licensed, Bonded & Insured Washington State Specialty Contractor
Basement Expert (also indexed on Google Maps as Basement Expert Waterproofing of Seattle) is the dedicated foundation waterproofing, sub-slab drainage, and structural stabilization division of Artbrick LLC, headquartered in Lynnwood, WA.
ARTBRL*812B8 (Verify on WA L&I →)
20722 12th Ave W, Lynnwood, WA 98036
NDS-Certified Drainage · Public Works Trained
Meet Our Technical Leadership Team
Every Basement Expert inspection and installation is led by seasoned drainage and structural specialists—never commissioned sales reps.
Certified Stormwater, Sub-Slab & Structural Specialists
Trained in NDS Residential Drainage engineering and Washington Municipal Public Works standards for excavation, hydrostatic pressure relief, and structural concrete restoration.
✓ Public Works Trained
✓ WA License #ARTBRL*812B8
Nazar
CEO & Founder · Principal Structural & Drainage Strategist
Public Works Trained
WA Licensed Specialty Contractor
Founded Basement Expert to bring civil and public-works engineering discipline to residential and commercial foundations across Greater Seattle. Nazar oversees structural remediation standards, sub-slab and exterior drainage architecture, and long-term system warranties—ensuring every project permanently relieves hydrostatic pressure at the footing level rather than masking symptoms behind plastic.
Serhii
Senior Drainage Specialist & Lead Diagnostic Inspector
7-Point Foundation Diagnostics
Glacial Till & Hydrology Specialist
Leads on-site technical evaluations and 7-point moisture and structural inspections across Seattle, Bellevue, Lynnwood, and Everett. Specializing in Pacific Northwest glacial till and blue clay hydrology, Serhii diagnoses sub-slab hydrostatic pressure, maps footing settlement, and designs custom SDR-35 active water diversion systems with transparent, unit-based engineering estimates.
Vlad
Senior Project Manager & Field Operations Lead
Deep Excavation & Structural Safety
Open-Spec Quality Assurance
Directs field execution, crew safety, and strict material compliance across all interior and exterior waterproofing projects. From full-depth exterior excavation and J-DRAIN 400 composite installation to 350,000 psi carbon fiber wall stabilization, Vlad ensures every phase is built to engineering specification, stays on schedule, and leaves your property clean and restored.
The Basement Expert Engineering Standard
1. Diagnostic Precision
We never rely on guesswork or scripted sales pitches. Every consultation begins with a technical 7-point foundation and drainage inspection—evaluating footing elevations, soil saturation, hydrostatic entry points, and downspouts to isolate the exact root cause before prescribing a fix.
2. Commercial-Grade Materials
We refuse to install crush-prone corrugated black pipe or passive plastic vapor barriers. Our crews build permanent systems using rigid smooth-wall SDR-35 PVC pipe, 1.5″ washed round drainage rock, J-DRAIN 400 dimple boards, cast-iron Zoeller/Liberty sump pumps, and 350,000 psi carbon fiber.
3. Public Works Accountability
Trained to municipal public-works standards, our in-house technicians execute clean trenching, code-compliant structural footing stabilization, and dust-controlled concrete restoration—backed by transparent unit-based pricing and transferable workmanship and manufacturer warranties.
