Cost Segregation Study
A full engineering-based analysis of your apartment complex that reclassifies assets into 5, 7, or 15-year depreciation schedules—unlocking significant first-year tax deductions and improving your cash flow immediately.
Owning an apartment complex means significant capital tied up in depreciating assets—but are you maximizing every deduction available? Seneca Cost Segregation delivers engineering-based studies that reclassify your multifamily property components into shorter depreciation schedules, unlocking front-loaded tax savings that average $171,243 in year one. Discover how much your complex qualifies for with a free estimate.

Comprehensive cost segregation solutions designed to maximize tax savings for apartment complex owners and multifamily investors.
A full engineering-based analysis of your apartment complex that reclassifies assets into 5, 7, or 15-year depreciation schedules—unlocking significant first-year tax deductions and improving your cash flow immediately.
Already own your apartment complex? Claim all missed depreciation from the past 15 years in a single tax year using IRS Form 3115—no amended returns required and no savings left on the table.
Skip costly on-site visits with our convenient video call inspection. Our engineering team performs real-time component identification and documentation in just 30–45 minutes, delivering results in 2–3 weeks.
Every cost segregation study includes our Seneca AuditDefense guarantee at no additional charge. We handle all IRS inquiries and defend your report for as long as you own the property.
We work directly with your accountant post-study to seamlessly implement depreciation schedules into your tax returns, including Form 3115 support for lookback studies—included at no extra cost.
Need your cost segregation study before a pressing tax deadline? Our expedited service delivers completed studies in as little as one week, prioritizing your property without sacrificing engineering accuracy.

We begin with a no-obligation consultation to assess your apartment complex's eligibility, provide a preliminary savings estimate, and give you a transparent breakdown of study costs and expected ROI. Properties with a building basis above $300,000 typically see returns of 10:1 to 25:1.
See how apartment complex owners across the U.S. are unlocking massive tax savings with Seneca Cost Segregation.
We combine over 12 years of real estate investment experience with certified engineering expertise to deliver cost segregation studies that are accurate, IRS-compliant, and built to maximize your returns.
Over 10,200 properties assessed nationwide with an average first-year deduction of $171,243 for our clients.
ASCSP-certified professionals with the CCSP designation and licensed engineers ensuring every study meets IRS standards.
Deployed across all 50 states, serving apartment complex owners from high-rise markets to suburban multifamily communities everywhere.
Our Seneca AuditDefense guarantee covers your apartment complex for as long as you own it—at zero additional cost.
Real estate investors and certified engineers who understand apartment complex ownership.

Co-Founder and CEO
Dylan Scandalios is an active investor in multi-family properties across the Pacific Northwest, giving him firsthand insight into the tax challenges apartment complex owners face. Before co-founding Seneca Cost Segregation, Dylan closed millions of dollars in business for both public and private companies along the West Coast, building deep expertise in real estate finance and tax strategy. As a Cost Segregation Expert and Owner of Seneca Cost Segregation, Dylan has helped real estate investors—from small multifamily operators to large apartment complex portfolios—save millions on their taxes. His investor-first perspective ensures every study is tailored to maximize real-world financial outcomes, not just deliver paperwork.

Co-Founder
Paul Spies is a Marine Corps Sergeant whose discipline and precision now drive Seneca Cost Segregation's operational excellence. With over 8 years of expertise in real estate construction, Paul is a Principal Broker and Licensed Contractor who successfully flipped over 150 homes in 4 years and led ground-up multi-family development projects from conception to completion. Having personally used cost segregation since 2018 to maximize returns on his own investment portfolio, Paul co-founded Seneca Cost Segregation with a clear mission: to bring the same competitive tax advantage he benefited from to apartment complex owners and real estate investors nationwide—at an affordable price, delivered on time.

Chairman
Howard Hirsch serves as Chairman of Seneca Cost Segregation, bringing executive-level leadership and strategic oversight to the firm's continued growth and expansion. His guidance supports Seneca's mission to deliver engineering-based cost segregation studies of the highest standard to apartment complex owners and real estate investors across all 50 states. Howard's leadership ensures that Seneca maintains its commitment to accuracy, IRS compliance, and exceptional client outcomes on every study completed by the engineering team.
Yes, cost segregation can be applied to virtually any income-producing rental property, including single-family rentals, multifamily units, and apartment complexes. The study reclassifies components like flooring, cabinetry, landscaping, and site utilities into shorter depreciation schedules (5, 7, or 15 years), accelerating deductions and significantly improving your cash flow in the early years of ownership.
Talk to a certified cost segregation specialist for a free, no-obligation consultation and savings estimate.
Seneca Cost Segregation delivers engineering-based studies to apartment complex owners and multifamily investors across the entire United States.
All 50 States
Service Area
10,200+
Properties Assessed
95%
Client Referral Rate
We're deployed nationwide—reach out to confirm coverage and get your free savings estimate today.
Certified Cost Segregation Professionals on every study.
Perfect rating from satisfied clients nationwide.
Iron-clad IRS audit protection included with every study.
Tell us about your apartment complex and we'll provide a no-obligation savings estimate and ROI analysis within one business day. Our specialists are ready to show you exactly how much you could be keeping more of your investment income.
For immediate assistance, feel free to give us a direct call at +1 530-797-6539 You can also send us a quick email at info@senecacostseg.com
For immediate assistance, feel free to give us a direct call at +1 530-797-6539 You can also send us a quick email at info@senecacostseg.com