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."
"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-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 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.
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.