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.
Over 10,200+ engineered cost segregation studies completed across the United States. Average first-year tax deduction: $171,243
Studies Completed
Avg Tax Savings
Partners
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 is an active investor in multi-family properties in the Pacific Northwest and a recognized Cost Segregation Expert. Before founding Seneca Cost Segregation, Dylan closed millions of dollars in business for both public and private companies along the West Coast, developing deep expertise in real estate finance and tax strategy. As CEO, Dylan has helped thousands of real estate investors including office building owners save millions on their federal taxes through engineering-based cost segregation studies. His hands-on investment background means he approaches every client engagement with the perspective of an investor, not just a service provider. Under his leadership, Seneca has completed over 10,200 studies nationwide and achieved a 95% client referral rate.

Co-Founder
Paul Spies is a Marine Corps Sergeant who brings over 8 years of hands-on expertise in real estate construction to Seneca Cost Segregation. As a Principal Broker and Licensed Contractor, Paul successfully flipped over 150 homes in just four years and led ground-up multi-family development projects across the country. Having leveraged cost segregation personally since 2018 to maximize returns on his own office and residential properties, Paul co-founded Seneca to make the same powerful tax strategy accessible to investors nationwide at an affordable price point and delivered on time. His construction background gives Seneca a unique engineering advantage when analyzing complex office building components and systems.

Chairman
Howard Hirsch serves as Chairman of Seneca Cost Segregation, providing executive leadership and strategic oversight to the firm's continued national expansion. With deep experience in financial services and real estate advisory, Howard helps guide Seneca's direction as it scales its engineering-based cost segregation services to property owners across all 50 states, including California's dynamic real estate market. His leadership ensures the company maintains its commitment to technical excellence, client satisfaction, and IRS-compliant study delivery that protects clients through every phase of property ownership.

President/Treasurer
Harry Papp serves as President and Treasurer of Seneca Cost Segregation, overseeing the company's operational and financial integrity. His dual role ensures that client investments in cost segregation studies generate maximum ROI through rigorous financial management and disciplined operational processes. Harry's leadership directly supports Seneca's ability to deliver studies on time and within budget a standard that has helped the firm achieve a 95% client referral rate and an average first-year deduction of $171,243 for property owners across California and the rest of the nation.
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.