Cost Segregation Study
Comprehensive engineering-based analysis that reclassifies property assets into shorter depreciation timeframes, delivering immediate tax savings averaging $171,243 in first-year deductions with full audit defense protection.
Navigate complex property asset classifications with confidence. Our engineering-driven consulting services help real estate investors and property owners identify optimal depreciation strategies, maximize tax benefits, and ensure IRS compliance through detailed unit of property analysis. With over 10,200 properties assessed nationwide, we deliver precision-engineered solutions that turn property components into immediate tax savings.

Strategic property analysis and classification services designed to maximize your real estate tax benefits and investment returns.
Comprehensive engineering-based analysis that reclassifies property assets into shorter depreciation timeframes, delivering immediate tax savings averaging $171,243 in first-year deductions with full audit defense protection.
Recover missed depreciation from properties acquired in the last 15 years without amending prior returns. Claim all overlooked deductions in one year using IRS Form 3115 with the same engineering rigor as current-year studies.
Convenient video-based property inspections that eliminate travel costs and accelerate study completion to 2-3 weeks. Our engineering team conducts real-time component analysis during your guided 30-45 minute virtual tour.
Seamless post-study implementation assistance for tax professionals. Our team collaborates with your accountant to integrate depreciation schedules into tax returns and provides ongoing support at no additional charge.
Expedited study completion in as little as one week for urgent tax deadlines. Our prioritized service maintains engineering precision while delivering results significantly faster than standard timelines.
Lifetime audit protection included with every study. If the IRS questions your depreciation strategy, our specialists defend the report, handle all communications, and provide supporting documentation at no extra cost.
Our unit of property consulting goes beyond surface-level assessments. Using proprietary technology built by licensed engineers, we dissect every property component—from HVAC systems to specialty lighting—to identify overlooked depreciation opportunities. Each analysis follows strict IRS guidelines while maximizing your immediate tax benefits. With over 12 years of experience and 10,200+ properties assessed, we deliver detailed engineering reports, organized depreciation schedules, and Form 3115 preparation that your CPA can implement immediately. Most studies complete in 2-4 weeks, not the industry standard of 4-8 months.

See how our engineering-based approach has helped property owners nationwide unlock millions in tax savings.
Founded by investors who've walked in your shoes, we combine real-world experience with engineering precision.
Co-founded by a Marine Corps Sergeant with 8+ years in construction and a multi-family investor, we understand real estate from both sides of the deal.
Engineering teams deployed across all 50 states ensure local expertise combined with consistent methodology, whether you need virtual or on-site property tours.
Our AuditDefense promise covers you for the entire ownership period—not just a limited window—with potential study cost refunds if material issues arise.
Proprietary engineering software delivers studies in 2-4 weeks versus the 4-8 week industry average, helping you reinvest tax savings faster.
Real estate investors and engineers working for your success.

Co-Founder and CEO
Dylan Scandalios brings a unique blend of business development prowess and hands-on real estate investment experience to Seneca Cost Segregation. As an active investor in multi-family properties throughout the Pacific Northwest, Dylan understands firsthand the financial pressures and opportunities property owners face. Before founding Seneca, he closed millions of dollars in deals for both public and private companies along the West Coast, developing the strategic partnerships and client-focused approach that now define Seneca's service model. As a certified Cost Segregation Expert, Dylan has personally helped real estate investors save millions in taxes through engineered depreciation strategies. His vision for Seneca centers on making sophisticated tax strategies accessible to everyday investors—not just institutional players—through transparent pricing, rapid turnaround times, and education-first consulting that empowers clients to make informed decisions about their property portfolios.

Co-Founder
Paul Spies co-founded Seneca Cost Segregation with a mission to democratize the competitive advantages he discovered through his own real estate journey. A Marine Corps Sergeant turned real estate entrepreneur, Paul brings over 8 years of construction expertise and boots-on-the-ground experience to every client engagement. As both a Principal Broker and Licensed Contractor, he successfully flipped more than 150 homes in just 4 years and led complex ground-up multi-family development projects from conception to completion. Since 2018, Paul has personally leveraged cost segregation strategies to accelerate his own portfolio growth, experiencing firsthand how engineered tax planning transforms cash flow and reinvestment capacity. This personal experience drives Seneca's commitment to affordable pricing and on-time delivery—Paul knows that delayed studies mean delayed savings, and expensive consulting fees erode the very benefits investors seek. His construction background ensures Seneca's engineering analysis captures every eligible component while his military discipline guarantees rigorous quality control and client communication.
A property consultant specializing in unit of property analysis serves as a strategic tax advisor for real estate investors and owners. They conduct detailed engineering-based assessments to identify which building components qualify for accelerated depreciation under IRS guidelines. This involves analyzing construction documents, inspecting properties (virtually or on-site), classifying assets into appropriate depreciation categories (5, 7, 15, or 27.5/39 years), and producing comprehensive reports with supporting documentation. The consultant coordinates with CPAs to implement findings in tax returns and provides audit defense if the IRS questions the depreciation strategy. Their role transforms complex tax code into actionable savings strategies.
Schedule a free consultation with our engineering team to discover your estimated savings and ROI.
Engineering teams deployed across all 50 states deliver local expertise with consistent methodology and rapid turnaround.
All 50 States
States Covered
10,200+ Studies
Properties Assessed
2-4 Weeks
Average Study Time
Connect with our team to discuss your property and receive a free preliminary analysis.
Certified Cost Segregation Professional designation
Perfect 5.0 rating from nationwide clients
Founded and led by Marine Corps veteran
Schedule your free consultation to receive a detailed savings estimate and ROI analysis for your property portfolio.
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