Cost Segregation Study
Full engineering-based analysis that reclassifies property assets into 5-, 7-, or 15-year depreciation schedules, delivering accelerated deductions, detailed reports, and CPA-ready depreciation schedules within 2–4 weeks.
Seneca Cost Segregation combines proprietary AI-driven technology with engineering-based methodology to deliver fast, accurate cost segregation studies nationwide. Our clients average $171,243 in first-year tax deductions—turning 20–40% of property costs into immediate savings. With 10,200+ studies completed, IRS-compliant reports, and AuditDefense included, we help real estate investors keep more of what they earn.
Comprehensive, engineering-based cost segregation solutions for every property type, delivered across all 50 states.
Full engineering-based analysis that reclassifies property assets into 5-, 7-, or 15-year depreciation schedules, delivering accelerated deductions, detailed reports, and CPA-ready depreciation schedules within 2–4 weeks.
Claim missed depreciation deductions on properties placed in service up to 15 years ago—without amending prior returns. Uses IRS Form 3115 to capture all deferred savings in a single tax year.
Convenient 30–45 minute video-call inspections that eliminate travel costs, reduce study fees, and deliver completed studies in as little as 2–3 weeks without disrupting your schedule.
Every study includes Seneca AuditDefense at no extra charge—covering IRS inquiries, document submission, and specialist representation for the entire duration of your property ownership.
Post-study implementation support for CPAs and tax professionals, including depreciation schedule integration, Form 3115 guidance, and direct team availability to ensure seamless tax filing.
Expedited study completion in as little as one week for clients facing urgent tax deadlines. Priority processing is available upon request with transparent rush-service pricing.
Seneca Cost Segregation's proprietary AI platform—built by engineers and tested for IRS compliance—accelerates the identification and classification of depreciable assets across any property type, from single-family rentals to large commercial complexes. Whether you own a multifamily building or a self-storage facility, our technology-forward approach delivers studies in 2–4 weeks (half the industry standard), with an average first-year deduction of $171,243. Every study includes complimentary tax assessments, CPA coordination, and lifetime AuditDefense, making it the most comprehensive and reliable cost segregation solution available to U.S. real estate investors.
See how real estate investors across the country have unlocked life-changing tax savings with Seneca.
"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."
"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."
"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 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."
"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!"
"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."
"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."
"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."
"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 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."
"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!"
"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."
"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."
"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."
"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 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."
"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!"
"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."
We combine veteran-founded expertise, cutting-edge AI technology, and a 95% client referral rate to deliver cost segregation studies you can trust.
Over 10,200 completed studies nationwide give us unmatched depth across every property type and U.S. market.
Proprietary in-house technology built by engineers ensures precise asset classification and full IRS compliance on every report.
Our team is deployed across all 50 states, offering both virtual and on-site inspections to serve investors coast to coast.
Every study includes our AuditDefense guarantee—covering IRS inquiries at no charge for as long as you own the property.
Investor-founded experts committed to maximizing your real estate tax savings.
Co-Founder and CEO
Dylan Scandalios is an active multi-family real estate investor in the Pacific Northwest and the Co-Founder and CEO of Seneca Cost Segregation. Before launching Seneca, Dylan closed millions of dollars in business for both public and private companies along the West Coast, honing a sharp commercial acumen that now drives Seneca's client-first approach. As a Certified Cost Segregation Professional and seasoned investor himself, Dylan understands firsthand the transformative power of accelerated depreciation. Under his leadership, Seneca has grown into a nationally recognized firm that has completed over 10,200 studies and saved clients an average of $171,243 in their first year. Dylan is passionate about helping fellow investors keep more of what they earn and build lasting wealth through strategic tax planning.
Co-Founder
Paul Spies is a Marine Corps Sergeant turned real estate powerhouse and Co-Founder of Seneca Cost Segregation. With over 8 years of hands-on expertise in real estate construction, Paul brings a ground-level understanding of how properties are built, valued, and depreciated. As a Principal Broker and Licensed Contractor, he successfully flipped over 150 homes in just four years and led complex ground-up multi-family development projects. Having personally leveraged cost segregation since 2018 to accelerate his own investment returns, Paul co-founded Seneca to make the same powerful tax strategy accessible to investors at an affordable price, delivered reliably on time. His engineering insight and operational discipline are foundational to Seneca's rigorous, compliance-first study methodology.
Chairman
Howard Hirsch serves as Chairman of Seneca Cost Segregation, providing strategic oversight and leadership that guides the company's growth and direction. With a wealth of experience in business leadership and financial strategy, Howard plays a pivotal role in ensuring Seneca upholds the highest standards of service, compliance, and client satisfaction. His counsel helps position Seneca as the most trusted engineering-based cost segregation provider in the country, supporting the firm's mission to help every U.S. real estate investor maximize the financial benefits of property ownership.
President/Treasurer
Harry Papp serves as President and Treasurer of Seneca Cost Segregation, overseeing the company's operational and financial functions with precision and integrity. Harry's leadership ensures that Seneca's internal processes, financial controls, and client delivery standards remain best-in-class. His commitment to fiscal discipline and operational excellence underpins the firm's ability to deliver engineering-grade cost segregation studies on time and within budget—reinforcing Seneca's reputation as a reliable, high-value partner for real estate investors and CPAs across all 50 states.
Seneca Cost Segregation uses proprietary, in-house technology built by engineers and specifically tested for IRS compliance. Unlike off-the-shelf tools, our platform is designed exclusively for cost segregation, enabling precise asset identification, accurate depreciation classification, and faster report generation. The technology integrates engineering cost databases, regulatory updates, and digital documentation to produce defensible, audit-ready studies in 2–4 weeks.
Speak with a Seneca expert for a free consultation and personalized savings estimate.
Seneca Cost Segregation serves real estate investors and property owners across all 50 U.S. states with virtual and on-site study options.
All 50 States
Service Coverage
10,200+
Studies Completed
Virtual & On-Site
Availability
We serve property owners across the entire United States—reach out to confirm availability in your market.
Proud member of the American Society of Cost Segregation Professionals.
Certified Cost Segregation Professional designation held by our team.
Perfect 5.0 average rating from satisfied clients nationwide.
Fill out the form below and a Seneca Cost Segregation expert will contact you within one business day with a personalized preliminary savings estimate and ROI analysis—at no cost or 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