Arizona's booming real estate market means significant tax opportunities for property owners — but only if you know how to claim them. Seneca Cost Segregation delivers IRS-compliant, engineering-based studies that reclassify your property assets for accelerated depreciation, turning 20–40% of your property costs into immediate tax savings. With an average first-year deduction of $171,243 and a 10:1+ ROI, the math speaks for itself.
Comprehensive engineering-based cost segregation solutions for Arizona real estate investors and property owners of every asset class.
Full engineering-based analysis that reclassifies property assets into 5-, 7-, or 15-year depreciation schedules, delivering substantial first-year tax deductions with a comprehensive report, depreciation schedules, and full audit defense included.
Recapture missed depreciation on properties placed in service up to 15 years ago using IRS Form 3115 — no amended returns required. Ideal for Arizona investors who haven't yet leveraged cost segregation.
Every study includes Seneca's AuditDefense guarantee at no extra charge. If the IRS audits your cost segregation study, our specialists handle all communications and documentation for as long as you own the property.
Convenient 30–45 minute video-based property inspections that eliminate travel costs and cut turnaround time to 2–3 weeks — ideal for Arizona investors managing multiple properties across the state.
Post-study implementation support ensuring your CPA can seamlessly integrate the depreciation schedules and fixed asset reports into your tax filings, including guidance on Form 3115 for lookback studies.
Need your study before an Arizona tax deadline? Our expedited service delivers completed engineering studies in as little as one week, prioritizing your property without sacrificing accuracy or compliance.
We assess your Arizona property's eligibility, run a preliminary savings analysis, and provide a transparent breakdown of projected tax benefits and ROI — at no cost or obligation. Most Arizona property owners are surprised by how much they've been leaving on the table.
See how Arizona property owners are saving hundreds of thousands in taxes with Seneca Cost Segregation.
"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."
"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."
"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."
"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"
"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."
"Their team was incredibly professional, prompt, and easy to work with."
"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."
"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."
"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."
"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"
"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."
"Their team was incredibly professional, prompt, and easy to work with."
"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."
"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."
"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."
"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"
"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."
"Their team was incredibly professional, prompt, and easy to work with."
"Seamless experience with great results. Highly recommend!"
We combine engineering precision, real estate investor expertise, and proprietary technology to deliver maximum tax savings — on time, every time.
Over 10,200 studies completed nationwide and an average first-year deduction of $171,243 — Arizona investors trust our results.
Our ASCSP-certified engineers use proprietary technology for IRS-compliant, audit-ready studies built to withstand scrutiny.
From Phoenix and Scottsdale to Tucson and Flagstaff, we serve Arizona property owners remotely or on-site with fast 2–4 week turnarounds.
Founded by a Marine veteran and real estate investor, we understand what's at stake — and we deliver 95% client referral rates to prove it.
Real estate investors and engineers who have walked in your shoes.
Co-Founder and CEO
Dylan Scandalios brings a hands-on investor's perspective to every cost segregation engagement. As an active investor in multi-family properties across the Pacific Northwest, Dylan understands the financial pressures and tax opportunities that real estate owners face — including those navigating Arizona's fast-growing property market. Prior to co-founding Seneca Cost Segregation, he closed millions of dollars in transactions for both public and private companies along the West Coast. As CEO, Dylan has helped real estate investors across all 50 states save millions on their taxes, building Seneca into one of the most trusted engineering-based cost segregation providers in the country. His combination of transactional experience and deep cost segregation expertise ensures every Arizona client receives a strategy optimized for maximum, defensible tax savings.
Co-Founder
Paul Spies is a Marine Corps Sergeant whose discipline and precision translate directly into the engineering rigor Seneca brings to every cost segregation study. With over 8 years of expertise in real estate construction, Paul has served as a Principal Broker and Licensed Contractor, successfully flipping over 150 homes in four years and leading ground-up multi-family developments. Having personally used cost segregation since 2018, Paul experienced first-hand the competitive tax advantage it provides — and co-founded Seneca to make those same benefits accessible to real estate investors across the country, including Arizona's rapidly expanding commercial and residential markets, at an affordable price that is always delivered on time. His construction and investment background ensures studies are built on real-world property knowledge, not just theory.
A cost segregation study in Arizona is an IRS-approved engineering analysis that reclassifies components of your real property — such as flooring, lighting, landscaping, and specialized equipment — from 27.5- or 39-year depreciation into shorter 5-, 7-, or 15-year schedules. This accelerates your depreciation deductions, reducing your federal tax liability significantly in the early years of ownership. Arizona property owners, particularly in high-growth markets like Phoenix and Scottsdale, commonly use it to boost cash flow and fund new acquisitions faster.
Talk to a Seneca specialist for a free consultation and no-obligation savings estimate.
From Phoenix and Scottsdale to Tucson, Flagstaff, and beyond — Seneca serves real estate investors across all of Arizona.
All 50 States
States Covered
10,200+
Studies Completed
95%
Client Referral Rate
We serve property owners throughout Arizona — reach out to confirm your location and get a free estimate.
Proud member of the American Society of Cost Segregation Professionals.
Team holds the Certified Cost Segregation Professional credential.
Perfect five-star average rating from satisfied clients nationwide.
Fill out the form below and a Seneca specialist will reach out within one business day with a no-obligation preliminary savings analysis for your Arizona property.
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