CostSeg Northwest Seattle’s Trusted Cost Segregation Firm
Maximize Your Property Tax Savings with Expert Cost Segregation Studies
Since 1994, CostSeg Northwest has specialized in delivering detailed, engineering-driven Cost Segregation Studies for property owners, real estate investors, developers, and their CPAs across Seattle and the Pacific Northwest.
By accelerating depreciation deductions, our reports help clients increase cash flow, reduce tax liabilities, and achieve a stronger ROI on their commercial or residential investment properties.
Why Choose CostSeg Northwest for Your Cost Segregation Study?
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Over 30 Years of Expertise: Established in 1994, we bring unparalleled experience to each project.
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Streamlined Process: We collaborate directly with contractors and CPAs — eliminating the need for costly third-party engineers.
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Engineering-Based Reports: Whether for new builds or existing properties, our reports meet IRS guidelines and maximize allowable depreciation.
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Proven Tax Savings: Our clients typically realize significant tax savings within the first year of reclassification.
We offer Cost Segregation Studies for a wide range of property types, including:
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New Construction Projects: Collaborating with contractors to itemize actual building costs whenever possible.
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Existing Building Acquisitions: Applying detailed cost estimation techniques backed by engineering standards.
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Purchased Buildings: Performing retroactive studies to unlock missed depreciation benefits.
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Tenant Improvements: Segregating costs for remodeled or newly leased commercial spaces.
Each study is tailored to maximize your specific property’s accelerated depreciation potential — no two reports are alike.
We provide Cost Segregation Reports for:
- New Buildings
- Existing Buildings
- Commercial Real Estate
- Multi-Family Housing
- Manufacturing Facilities
- High-Tech and R&D Centers
- Large-Scale Distribution Warehouses
- Medical and Healthcare Facilities
- Hospitality Properties
- Income Producing Properties
If you own or manage any income-producing property, a cost segregation study could save you substantial tax dollars.
Maximize Washington State Tax Incentives
In addition to federal tax benefits, we assist clients in leveraging Washington State Department of Revenue tax incentives available for:
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New manufacturing buildings
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High-tech research and development centers
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Large distribution and logistics centers
Our tax incentive consulting ensures you claim every advantage available.
Why Cost Segregation Matters
A professionally prepared cost segregation study can:
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Accelerate depreciation deductions by reclassifying assets into 5, 7, or 15-year categories
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Increase current-year cash flow
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Improve after-tax ROI
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Strengthen tax positions in the event of an IRS audit
At CostSeg Northwest, every report is thorough, defensible, and designed to pass IRS scrutiny.
Get a Free Preliminary Benefit Analysis
Wondering if cost segregation makes sense for your property?
Contact CostSeg Northwest today for a free preliminary analysis. We’ll estimate your potential tax savings and outline the next steps — no obligation.
Frequently Asked Questions About Cost Segregation
What is a Cost Segregation Study?
A Cost Segregation Study is an engineering-based analysis that identifies and reclassifies personal property assets to accelerate depreciation and reduce taxable income.
Who Benefits from Cost Segregation?
Property owners of commercial, industrial, and residential rental properties valued at $500,000 or more typically benefit the most.
When Should I Get a Cost Segregation Study?
You should consider a study immediately after building or purchasing a property, or even retroactively for properties purchased within the last 15 years.
How Much Can I Save with Cost Segregation?
On average, cost segregation can save property owners between 5% to 10% of a building’s purchase price in present value tax savings.
A cost segregation study is a specialized engineering and tax analysis that separates and reclassifies property assets into shorter depreciation categories.
By identifying assets like lighting, flooring, and mechanical systems separately from the building structure, you can accelerate depreciation deductions and significantly reduce taxable income.
Cost segregation is ideal for:
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Commercial property owners
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Multi-family real estate investors
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Industrial facility owners
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Residential rental property owners
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Developers and builders
If you own a property valued at $500,000 or more, a cost segregation study could unlock substantial tax savings and cash flow increases.
At CostSeg Northwest, our typical study timeline is:
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2–4 weeks for existing buildings
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4–6 weeks for large or highly complex new construction
We handle coordination directly with your contractor and CPA to streamline the process.
Properties that typically see the greatest ROI from cost segregation include:
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Office buildings
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Apartment complexes
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Industrial facilities
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Retail centers
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Hotels and resorts
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Medical offices
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Manufacturing plants
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Warehouses and distribution centers
Almost any income-producing property qualifies for accelerated depreciation.
Yes. Even if you purchased a property up to 15 years ago, you may be eligible for a look-back study.
Through the IRS’s automatic Form 3115 change, you can catch up missed depreciation without amending prior returns — delivering a major cash flow boost in the current year.