Own an investment property? We help you pay less tax.
Our clients claim an average of $84,000 in year-one deductions. A TDA cost segregation study unlocks depreciation you'd otherwise wait 27.5 or 39 years to claim.
- Double Our Fee GuaranteeIf your first-year tax savings don't exceed twice our study fee, you pay nothing.
- Residential fee from $650, commercial from $1,250
- Serving all 50 states
Average based on TDA studies of $1M–$3M investment properties under OBBBA 100% bonus depreciation. Results vary by property.
See what you could save
Takes 30 seconds. We'll reply with your quote and an estimate of your first-year deduction.
Double Our Fee Guarantee
If we can't find at least double our fee in deductions in the first full financial year, there's no charge for our services.
Cost segregation in plain English
When you own an investment property, the IRS lets you deduct the cost of the building over time. By default, the whole building is written off slowly over 27.5 years (residential) or 39 years (commercial).
But a building isn't one thing. Many parts of it wear out much faster, and the tax code lets you deduct those over 5, 7 or 15 years. With 100% bonus depreciation, those deductions can often be claimed all in the first year.
A cost segregation study identifies and costs every one of those items, so you can claim them.
Same property. You just get the deductions now, when the cash is worth the most.
A $1M rental property
- Year-one depreciation without a study
- $29,091
- Year-one depreciation with a TDA study
- $221,818
- Extra tax saved in year one
- ≈ $71,000
Illustrative only. $1M residential rental bought after January 19, 2025 with an $800k building value, 25% reclassified to 5, 7 and 15-year property and claimed with 100% bonus depreciation, 37% tax bracket, mid-month convention ignored. Assumes the deduction can be used against your income, which your CPA will confirm. Results vary by property.
How it works
Request a quote
Fill in the 30-second form. We reply with a quote and an estimate of your first-year deduction.
We do the study
Our team analyzes and costs your property. Residential studies take 5–7 days.
You pay less tax
Hand the report to your CPA and they claim the deductions on your return.
Why property owners choose TDA
Depreciation is all we do, for property owners in all 50 states.
Save tax this year
Our clients' average year-one deduction on $1M–$3M investment properties.
Affordable studies
Residential from $650, commercial from $1,250. Pay once for the life of the property.
Fast turnaround
Residential studies in 5–7 days, commercial in about 10, nationwide.
What our clients say
4.7 from 128 Google reviews
“Highly recommend TDA for tax depreciation services. The entire process was smooth and professional, and the report was detailed, accurate, and easy to understand.”
“I can recommend them as very professional and very proficient. I was more than happy with the result they achieved and it was money well spent.”
“Communication was excellent. Process was smooth and easy team to deal with.”
Reviews are from clients of TDA Group companies for tax depreciation reports.
Meet the directors
Quantity surveyors with more than 20 years' depreciation experience each.
Daniel Farrugia
Co-Founder & Principal
BConMgt(Build)(Hons), MAIQS, CQS
Theo Mavratzakis
Co-Founder & Principal
BConMgt(Build), MAIQS, CQS
Frequently asked questions
What is a cost segregation study?
It splits your property into components and assigns each the correct IRS depreciation life. Items with 5, 7 or 15-year lives are depreciated much faster than the building, so you claim more deductions sooner.
Does 100% bonus depreciation apply?
100% bonus depreciation was permanently restored for qualifying property acquired after January 19, 2025. A study identifies which parts of your property qualify. Your CPA will confirm how it applies to you.
What is the Double Our Fee Guarantee?
If our study doesn't find at least double our fee in deductions in the first full financial year, there's no charge for our services.
How much does it cost?
Residential studies start at $650 and commercial at $1,250. The study lasts the life of the property and the fee is tax deductible.
I bought my property years ago. Is it too late?
Usually not. Missed depreciation can often be caught up in the current year without amending past returns. Your CPA will confirm the approach.
Is cost segregation legitimate?
Yes. It's an IRS-recognized method with its own IRS Cost Segregation Audit Techniques Guide, and our studies follow that guide. Your CPA uses our report to claim the deductions on your return.
Do I need to involve my CPA?
Yes, and we make it easy. We don't prepare tax returns. We give your CPA a report with everything they need to claim the deductions.
Is the quote really free?
Yes. There's no cost and no obligation.