Cost Segregation Study
Engineering-based analysis that reclassifies property assets into shorter depreciation timeframes—5, 7, or 15 years to deliver accelerated deductions, with an average first-year saving of $171,243 and ROI of 10–25:1.
Seneca Cost Segregation delivers engineering-based property tax consulting and real estate tax advisory services trusted by thousands of investors nationwide. From cost segregation studies to complimentary tax assessments, we help property owners legally accelerate depreciation, eliminate unnecessary tax burdens, and unlock immediate cash flow with an average first-year deduction of $171,243 and IRS audit protection included.
Comprehensive engineering-based tax strategies designed to maximize depreciation deductions and reduce federal tax liability for real estate investors.
Engineering-based analysis that reclassifies property assets into shorter depreciation timeframes—5, 7, or 15 years to deliver accelerated deductions, with an average first-year saving of $171,243 and ROI of 10–25:1.
Recover missed depreciation deductions on properties placed in service up to 15 years ago without amending prior returns using IRS Form 3115 to claim all missed deductions in a single tax year.
Convenient video-call inspections that deliver full property analysis in 30–45 minutes, eliminating travel costs and cutting turnaround time to just 2–3 weeks compared to 4–6 weeks for on-site visits.
Every study includes Seneca AuditDefense at no extra charge, our specialists handle all IRS inquiries, provide supporting documentation, and cover clients for the entire duration of property ownership.
Post-study implementation support for CPAs and tax professionals, including depreciation schedule integration, Form 3115 guidance, and direct coordination to ensure seamless inclusion in tax filings.
Beyond cost segregation, Seneca provides complimentary tax assessments across your portfolio, partnerships, and business assets to identify additional savings opportunities at no additional charge.
We begin with a no-cost consultation to assess your property's eligibility, provide a preliminary savings estimate, and deliver a transparent breakdown of projected ROI so you know the value before committing. Properties across all 50 states qualify.
See how real estate owners across the country have unlocked significant 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 From veteran-owned roots to engineering-grade methodology, here's what sets our property tax advisory team apart.
Over 10,200 cost segregation studies completed nationwide with a 95% client referral rate across all 50 states.
Our studies use proprietary, engineer-built technology tested for IRS compliance, delivering accuracy and audit-ready documentation every time.
Every study comes with Seneca AuditDefense at no extra cost, protecting clients for the full duration of property ownership with a money-back guarantee.
Founded by a Marine Corps veteran and a multi-family investor with over a decade of real estate experience, we advise from a position of firsthand property ownership.
Expert engineers, investors, and advisors dedicated to maximizing your real estate tax benefits.
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.
Merle Rosskam
CEO
Tax advisory refers to professional guidance provided to individuals or businesses to help them navigate tax laws, minimize liabilities, and optimize their financial strategies. A tax advisor analyzes your specific situation such as property ownership, income structure, and investment goals to recommend legal strategies like cost segregation, depreciation acceleration, and tax deferral that reduce your overall tax burden.
Speak with a Seneca cost segregation expert for a free, no-obligation consultation and savings estimate.
Seneca Cost Segregation provides engineering-based property tax advisory services to real estate investors in all 50 states.
All 50 States
Service Coverage
10,200+
Studies Completed
95%
Client Referral Rate
We serve real estate investors nationwide, contact us to confirm eligibility and get your free savings estimate.
Member of the American Society of Cost Segregation Professionals.
Certified Cost Segregation Professional designation from ASCSP.
Perfect five-star average rating from satisfied clients nationwide.
Fill out the form below and a Seneca Cost Segregation expert will reach out to assess your property, estimate your potential tax savings, and answer any questions at no cost and no obligation.
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.