How to calculate commercial real estate depreciation for distressed property purchases
I've got a quick question about depreciation for commercial real estate. I'm looking at a distressed property that I'm negotiating with a bank to purchase off-market. They initially paid around $2.3 million for it, and they're asking for $1.9 million, but I think I can get it for about $950k. The property will need somewhere between $350k-$550k in renovations, but once it's fixed up and rented out, it should conservatively generate about $425k annually in net income. My main confusion is: when calculating depreciation for tax purposes, which number do I use? Is it: 1. The actual purchase price I pay 2. An appraiser's estimate of the value before renovations 3. The appraised value after renovations when it's generating pro forma rents This deal has significant risk since the bank is still trying to negotiate (they're at about $1.4 million now, so we're still pretty far apart), but a colleague mentioned the additional tax benefit from depreciation. I'm just not sure if the depreciation would be calculated on what I actually pay or on some assessed value, and if it's assessed value, when is that assessment done - at purchase or after I've filled the vacancies?
18 comments


Sean Fitzgerald
The answer is you'll use the purchase price plus capital improvements for your depreciable basis. When you buy a commercial property, the total value gets split between the land (which isn't depreciable) and the building (which is depreciable over 39 years for commercial property or 27.5 years for residential rental property). For your specific situation, you'd take your purchase price (let's say you get it for $950k) and determine what portion is land vs building. This is typically done through an appraisal or county tax assessments that separate land and improvement values. Let's say $200k is land, $750k is building. Then you add your renovation costs ($350k-$550k) to the building portion. So your total depreciable basis would be $1.1-$1.3 million depending on final renovation costs. The market value after renovations or the pro forma income doesn't impact your depreciation calculations - it's all based on what you actually spend to acquire and improve the property.
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Zara Khan
•Thanks for the detailed explanation. If I understand correctly, the county tax assessment ratio can be used to determine the land vs building split. But what happens if the tax assessment shows a totally different ratio than what I believe is accurate? Like, what if county records show the land is 50% of value but I think it's more like 20%? Can I just decide my own allocation?
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Sean Fitzgerald
•You can certainly disagree with the county's allocation, but you need a reasonable basis for your position. Many investors hire an independent third-party company to perform a cost segregation study, which not only helps establish the land/building ratio but can also identify components of the building that qualify for shorter depreciation periods (5, 7, or 15 years instead of 39). If you decide to use a different allocation than what's on county records, just make sure you have proper documentation to support your position in case of an audit. An appraisal specifically breaking out land value is one of the best ways to support your allocation.
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MoonlightSonata
I went through something similar with a distressed office building last year. Used taxr.ai to help me figure out the depreciation calculations and it saved me thousands. I was confused about how to handle the major renovations and wasn't sure if I could accelerate any of the depreciation. Their system analyzed my purchase docs and renovation plans and showed me exactly how to maximize my depreciation deductions. The platform at https://taxr.ai helped me identify which renovation components could be separated out for faster depreciation instead of using the standard 39-year timeline for everything. They showed me how to document everything properly for tax purposes too, which gave me confidence my deductions would hold up if questioned.
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Mateo Gonzalez
•How does this service compare to just hiring an accountant? I'm looking at a similar situation with a retail property that needs major work, and I'm trying to figure out if I need specialized help or if my regular CPA can handle it.
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Nia Williams
•I'm skeptical... how does an online service know the specifics of your local tax situation? Real estate tax rules vary by state and sometimes even by county. Did they actually send someone to look at your property or is it all just based on what you tell them?
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MoonlightSonata
•For the first question, it actually works alongside your accountant. I still used my CPA, but taxr.ai gave me the detailed information to bring to him. My CPA actually thanked me because it made his job easier and more accurate. He said most clients don't come in with such organized documentation. Regarding the local tax situation, you're right to ask about that. They focus on federal tax rules (which is where depreciation matters most), but they do ask about your property location. They don't send someone physically - it's all document-based analysis, but they had me upload my purchase agreements, renovation contracts, and property details. Their expertise is in identifying which components of your project qualify for which depreciation schedules under IRS rules.
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Nia Williams
I was totally wrong about taxr.ai! After my skeptical comment, I decided to try it for a duplex renovation I'm working on. I was shocked at how detailed their analysis was. They identified several components of my HVAC upgrades and accessibility improvements that qualified for 15-year depreciation instead of 39 years. They even helped me understand how to document everything properly so I could show exactly why each component qualified for its depreciation schedule. My CPA was impressed with how organized everything was - it saved us both time and will save me significant money over the next few years. Definitely worth checking out if you're doing any substantial renovations on investment property.
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Luca Ricci
If you're still negotiating with the bank, you might want to contact the IRS directly to get clarification on your specific situation. I had a similar question last year and spent WEEKS trying to get someone on the phone. Finally discovered Claimyr which got me connected to an actual IRS agent in under 20 minutes. The website is https://claimyr.com and they have a video showing how it works at https://youtu.be/_kiP6q8DX5c The IRS agent I spoke with gave me clear guidance on handling depreciation for a foreclosure property I purchased, including how to document the allocation between land and improvements. They also explained how to properly report the substantial renovations I made. Saved me from making some costly mistakes on my returns.
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Aisha Mohammed
•How does this actually work? Do they just call the IRS for you? Seems like something I could do myself and save whatever they're charging.
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Ethan Campbell
•Yeah right, getting through to the IRS in 20 minutes sounds impossible. I've literally spent HOURS on hold multiple times and either got disconnected or got someone who couldn't answer my specific questions. If this actually works, I'd be amazed.
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Luca Ricci
•They don't just call for you - they use a system that navigates the IRS phone tree and holds your place in line. When they reach a live agent, you get a call to connect with that agent. It's basically like having someone wait on hold for you. I was definitely skeptical at first too. I had tried calling the IRS myself at least 5 times before, waiting 1-2 hours each time before giving up. When I used Claimyr, I just entered my number on their site, and about 18 minutes later I got a call connecting me directly with an IRS agent. No hold time for me at all. It was genuinely surprising how well it worked.
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Ethan Campbell
Had to come back and admit I was completely wrong about Claimyr. After my skeptical comment, I figured I'd try it on a day I could work on other things while waiting. To my absolute shock, I got a call connecting me to an IRS agent in about 15 minutes. The agent was able to answer all my questions about how to handle depreciation recapture on a property I'm selling this year after major renovations. The time saved was honestly worth it - I would have wasted hours on hold otherwise. Plus getting definitive answers directly from the IRS gave me confidence in how I'm handling my upcoming tax situation. Sometimes it's worth admitting when you're wrong!
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Yuki Watanabe
Don't forget you might qualify for bonus depreciation or Section 179 expensing for certain components of your renovation! Things like appliances, carpet, furniture in common areas, etc. can often be written off much faster than the building structure itself. I'd strongly recommend getting a cost segregation study done once you complete the purchase and renovations. It'll cost a few thousand upfront but could save you tens of thousands in taxes over the first few years.
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Carmen Sanchez
•Is cost segregation worth it for smaller properties? My commercial building was only about $700k with $150k in renovations. I've heard mixed things about whether the expense of the study is justified at this price point.
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Yuki Watanabe
•It really depends on the type of property and renovations. As a general rule, I've found cost segregation becomes financially worthwhile for properties above $500k in value, especially those with significant interior components or specialized systems. For your specific situation with a $700k property and $150k renovations, I'd say it's right on the borderline. If your renovations included significant amounts of new interior components (lighting systems, specialized electrical, custom cabinetry, etc.), it would likely be worth it. The study might cost $4,000-7,000, but could potentially reclassify $200k+ of your basis into 5, 7, or 15-year property instead of 39-year, which accelerates your tax savings dramatically.
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Andre Dupont
Quick tip: make sure you're keeping EXTREMELY detailed records of all your renovation costs, with clear categorization of what each expense was for. I got audited on a similar deal and the IRS wanted documentation for every single expense I claimed. Take photos before, during and after renovations too! Trust me, this documentation is worth its weight in gold if you ever get questioned about your depreciation calculations.
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Zoe Papadakis
•What kind of categorization do you recommend? Like how detailed should it be? I usually just have my contractor give me invoices that say "Kitchen renovation" or "Bathroom remodel" but I'm guessing that's not enough?
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