Unlock the full tax-saving power of your real estate investments with engineering-based tax depreciation and cost segregation studies. Seneca Cost Segregation helps property owners across all 50 states accelerate deductions, boost cash flow, and legally reduce federal tax liability—with an average first-year deduction of $171,243 and a 10–25:1 return on investment.
Comprehensive engineering-based tax depreciation solutions designed to maximize savings for every type of income-producing property.
A full engineering-based analysis that reclassifies property assets into shorter depreciation periods—5, 7, or 15 years—instead of the standard 27.5 or 39 years, generating significant first-year tax deductions and improving cash flow.
Recover missed depreciation on properties placed in service up to 15 years ago using IRS Form 3115. Claim all uncaptured deductions in a single tax year without amending prior returns—no deadlines missed.
Convenient 30–45 minute video-based property inspections that replace costly on-site visits. Engineering team performs real-time component identification and classification, delivering studies in as little as 2–3 weeks.
Every study includes Seneca AuditDefense at no additional charge—covering IRS inquiries, supporting documentation, and specialist responses for the entire duration of property ownership, backed by a money-back guarantee.
Post-study support for CPAs and tax professionals to seamlessly implement depreciation schedules into current-year returns or via Form 3115 look-back filings, ensuring every dollar of identified savings is properly captured.
Expedited study completion in as little as one week for clients facing urgent tax deadlines. Priority processing ensures fast, accurate delivery without compromising the engineering-based quality of the final report.
Most real estate investors leave tens of thousands of dollars on the table each year by depreciating their entire property over 27.5 or 39 years. Seneca Cost Segregation's engineering-based tax depreciation studies identify and reclassify assets into accelerated depreciation categories, legally moving 20–40% or more of property costs into immediate deductions. Serving property owners across all 50 states—from single-family rentals to large commercial portfolios—our studies are completed in 2–4 weeks, with an average client achieving $171,243 in first-year tax savings and ROI ratios of 10–25:1.
See how real property owners across the country have maximized their tax savings with Seneca Cost Segregation.
"Extremely professional and efficient in their cost set analysis. Great communication and transparency. Will be using them going forward on all my properties."
"I couldn't be more pleased with the results. Their team was incredibly professional, prompt, and easy to work with. I achieved a highly favorable tax situation and recommend Seneca to anyone looking to maximize their tax benefits."
"Seamless experience with great results. Highly recommend!"
"The tax savings achieved with Seneca Cost Segregation made a major impact on my bottom line. I wasn't aware it was a possibility until they brought the opportunity to me. Their insight and expertise are invaluable."
"Their team was incredibly professional, prompt, and easy to work with."
"We contacted Seneca for a Cost Seg Study and they went above and beyond. Their eagerness to help and province of info will blow you away."
"I've referred multiple clients to Seneca, and each time they uncovered significant tax savings. Their team is fast, professional, and easy to work with. They've become a trusted extension of our tax strategy."
"Dylan and his team at Seneca Cost Segregation are extremely knowledgeable. When I explored their website, it was clear they knew their stuff. It offered a very professional approach to cost segregation, backed by years of experience."
"We contacted Dylan for a cost seg study and he went above and beyond Not only will their pricing be the best price you will find, his eagerness to help and province info will blow you away"
"Extremely professional and efficient in their cost set analysis. Great communication and transparency. Will be using them going forward on all my properties."
"I couldn't be more pleased with the results. Their team was incredibly professional, prompt, and easy to work with. I achieved a highly favorable tax situation and recommend Seneca to anyone looking to maximize their tax benefits."
"Seamless experience with great results. Highly recommend!"
"The tax savings achieved with Seneca Cost Segregation made a major impact on my bottom line. I wasn't aware it was a possibility until they brought the opportunity to me. Their insight and expertise are invaluable."
"Their team was incredibly professional, prompt, and easy to work with."
"We contacted Seneca for a Cost Seg Study and they went above and beyond. Their eagerness to help and province of info will blow you away."
"I've referred multiple clients to Seneca, and each time they uncovered significant tax savings. Their team is fast, professional, and easy to work with. They've become a trusted extension of our tax strategy."
"Dylan and his team at Seneca Cost Segregation are extremely knowledgeable. When I explored their website, it was clear they knew their stuff. It offered a very professional approach to cost segregation, backed by years of experience."
"We contacted Dylan for a cost seg study and he went above and beyond Not only will their pricing be the best price you will find, his eagerness to help and province info will blow you away"
"Extremely professional and efficient in their cost set analysis. Great communication and transparency. Will be using them going forward on all my properties."
"I couldn't be more pleased with the results. Their team was incredibly professional, prompt, and easy to work with. I achieved a highly favorable tax situation and recommend Seneca to anyone looking to maximize their tax benefits."
"Seamless experience with great results. Highly recommend!"
"The tax savings achieved with Seneca Cost Segregation made a major impact on my bottom line. I wasn't aware it was a possibility until they brought the opportunity to me. Their insight and expertise are invaluable."
"Their team was incredibly professional, prompt, and easy to work with."
"We contacted Seneca for a Cost Seg Study and they went above and beyond. Their eagerness to help and province of info will blow you away."
"I've referred multiple clients to Seneca, and each time they uncovered significant tax savings. Their team is fast, professional, and easy to work with. They've become a trusted extension of our tax strategy."
"Dylan and his team at Seneca Cost Segregation are extremely knowledgeable. When I explored their website, it was clear they knew their stuff. It offered a very professional approach to cost segregation, backed by years of experience."
"We contacted Dylan for a cost seg study and he went above and beyond Not only will their pricing be the best price you will find, his eagerness to help and province info will blow you away"
We combine veteran-owned integrity, engineering precision, and over 12 years of experience to deliver tax depreciation results that consistently outperform industry standards.
Our engineering team has assessed over 10,200 properties nationwide, delivering consistent, compliant, and maximized depreciation results for every client.
Deployed across all 50 states with both virtual and on-site inspection capabilities, ensuring every U.S. property owner has access to expert tax depreciation services.
Every study is backed by the Seneca AuditDefense guarantee—engineering-based compliance and IRS audit support at no additional charge for the life of your property ownership.
Founded by a Marine Corps veteran and real estate investor with over a decade in the field—our team brings discipline, ethics, and firsthand investment experience to every study.
Experienced engineers, investors, and advisors dedicated to maximizing your tax savings.
Co-Founder and CEO
Dylan Scandalios is an active investor in multi-family properties across the Pacific Northwest and brings a deeply personal understanding of the financial pressures real estate investors face. Before founding Seneca Cost Segregation, Dylan closed millions of dollars in business for both public and private companies along the West Coast, building an exceptional track record in deal-making and client relationships. As Co-Founder and CEO, Dylan has channeled that expertise into leading a firm that has helped hundreds of real estate investors across all 50 states save millions on their taxes through engineering-based cost segregation studies. His hands-on investment background means he approaches every client engagement not just as a service provider, but as a fellow investor who understands the value of every dollar saved.
Co-Founder
Paul Spies brings a rare combination of military discipline, hands-on construction expertise, and real estate investment experience to Seneca Cost Segregation. A Marine Corps Sergeant, Paul leveraged over 8 years in real estate construction to successfully flip more than 150 homes in just 4 years and lead ground-up multi-family development projects as a Principal Broker and Licensed Contractor. Having personally used cost segregation since 2018 to gain a competitive tax advantage on his own portfolio, Paul co-founded Seneca to make the same powerful strategy accessible to all real estate investors at an affordable price point—delivered on time, every time. His firsthand knowledge of property construction is a core driver of the firm's engineering-based accuracy.
Chairman
Howard Hirsch serves as Chairman of Seneca Cost Segregation, providing strategic leadership and governance oversight to the organization. With a focus on ensuring the company upholds its core values of ethics, precision, and client-first service, Howard plays a pivotal role in guiding the firm's long-term vision. His leadership helps Seneca maintain its position as one of the most trusted and comprehensive engineering-based cost segregation providers in the country, supporting the team's mission to help American real estate investors retain more of their hard-earned wealth through legally sound and maximally effective tax depreciation strategies.
President/Treasurer
Harry Papp serves as President and Treasurer of Seneca Cost Segregation, overseeing operational excellence and financial integrity across the organization. In his dual role, Harry ensures that the company's rapid growth—from a founder-led startup to a firm that has completed over 10,200 cost segregation studies nationwide—is matched by rigorous financial stewardship and process discipline. His leadership supports the engineering team's ability to deliver studies within 2–4 weeks while maintaining the high standards of accuracy and compliance that Seneca clients and their CPAs depend on for confident tax filing and audit-readiness.
Tax depreciation allows property owners to deduct the cost of an income-producing asset over its useful life as defined by the IRS. For real estate, residential properties depreciate over 27.5 years and commercial properties over 39 years. Cost segregation accelerates this by reclassifying components—like fixtures, flooring, and landscaping—into 5-, 7-, or 15-year categories, generating much larger deductions in the early years of ownership and immediately improving cash flow.
Speak with a cost segregation expert for a free, no-obligation consultation and savings estimate.
Seneca Cost Segregation delivers engineering-based tax depreciation studies to real estate investors and property owners across every U.S. state.
All 50 States
Service Area
10,200+
Studies Completed
95%
Client Referral Rate
We serve all 50 states—contact us to confirm eligibility and get a free savings estimate for your property.
ASCSP-certified with the Certified Cost Segregation Professional designation
Perfect average rating from satisfied clients across the United States
Proudly veteran-owned, founded on discipline, integrity, and mission-first values
Fill out the form below and a Seneca Cost Segregation expert will provide a no-obligation preliminary savings analysis for your property—typically within one business day.
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