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.
"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 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."
"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"
"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."
"Seamless experience with great results. Highly recommend!"
"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."
"Extremely professional and efficient in their cost set analysis. Great communication and transparency. Will be using them going forward on all my properties."
"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 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."
"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"
"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."
"Seamless experience with great results. Highly recommend!"
"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."
"Extremely professional and efficient in their cost set analysis. Great communication and transparency. Will be using them going forward on all my properties."
"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 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."
"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"
"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."
"Seamless experience with great results. Highly recommend!"
"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."
"Extremely professional and efficient in their cost set analysis. Great communication and transparency. Will be using them going forward on all my properties."
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
"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."
Eliot Varnum CPA, Varnum, Finch & Co. "Every client we send their way whether it's their first cost segregation study or their seventh is treated like their most important client. Their team's attention to detail, responsiveness, and genuine commitment to adding value set them apart."
Matt Bontrager CEO, Truebooks CPA 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 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.
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.