The Hidden Costs Investors Ignore When Buying Property

This is Climate-Ready Real Estate Investing, the intelligence briefing for stakeholders in the nearly $400,000,000,000,000 global real estate market, the world's largest asset class. The goal is to provide you with the intelligent signals to be profitable today while ensuring we will have a tomorrow. Listen, then implement to do good things and make money. I'm your host, Jamie Wolf. Welcome to Climate Ready Real Estate Investing.

Each week, in addition to guest expert interviews, our audience receives three short briefs focused on market intelligence, strategy and underwriting like this one, as well as narratives of current events with future implications. The theme underlying climate ready real estate investing is a deep concern for the well-being and viability of our planet today and tomorrow and a desire to explore how best to support this industry. Global real estate, the world's largest asset class at nearly 400,000,000,000,000 in making both profitable and forward thinking big picture decisions, barring from the Hippocratic oath to first do no harm. This month, we are reframing climate change as a matter of market structure, not ideology. With that as context, today's brief is the hidden costs investors ignore when buying property.

It is also our first strategy and underwriting episode, which means we're going to take a single deal and run it through a lens most proformas do not account for. The goal is simple. I will show you where climate risk is already sitting inside an operating budget even when no one has named it yet and give you the framework to price it before you close. If you're a fix and flipper where you like to buy and hold at a small scale, you may have been conditioned to feel the deal is made at purchase. Ideally, the lower the purchase price, the higher your spread or profit.

I'd like to suggest that the purchase price of a property is the least interesting number in the transaction. The numbers that decide whether a deal earns its projected returns are the ones that arrive later. The insurance renewal, the roof replacement, the utility bill, the vacancy loss after a weather event, and the cap rate at exit. Every one of those numbers is now climate sensitive, and every one of them is routinely underwritten with assumptions that were calibrated to a prior decade. Even if you weren't originally planning to hold, the economy may dictate otherwise.

Accurately calculating your various exits before you buy is increasingly crucial to your longevity as an investor. If you're underwriting a 2026 acquisition with twenty eighteen assumptions, you are exposed. In October 2024, Heitman and the Urban Land Institute jointly published a report on rising insurance costs and commercial real estate investment strategy. Their research confirmed what experienced operators in high exposure markets are already seeing. Climate linked cost increases are materially compressing year one NOI relative to trailing twelve month financials, in some cases by eight to 14% or more depending on the geography and asset type.

That is the difference between a deal that clears your hurdle rate and a deal that does not. Meanwhile, industry benchmarking data show that properties in high exposure climate zones experienced insurance expense growth exceeding 30% over the trailing thirty six months compared with materially lower increases in lower exposure markets. Same asset class, same hold period, radically different economics. That's the gap we're closing today. You know pro form a gaps are crucial in scenario planning to understand what might impact the bottom line in the future.

The pro formas being calculated in broker packages are still modeling yesterday's expense trajectory. That's an avoidable risk. Let's walk through a case study I will call Houston class b. It's a composite based on deals actively trading in the Gulf Coast multifamily market as of early twenty twenty six. The asset is 184 garden style units built in 1998 located in a West Houston submarket within the hundred year flood plain but outside the regulatory floodway.

It's a brick and frame construction with a pitched composite shingle roof at year 18 of its expected twenty year life. It has central HVAC with individual unit condensers that are averaging twelve years old. The purchase price is 28,400,000 or roughly a 154,000 per unit, a modest discount to some market comps. The seller is marketing it as a value add with an in place cap rate of 5.8% and a projected stabilized cap rate of 6.9% after what he calls light renovation. The broker's pro form a projects year one net operating income of 1,650,000, growing to 1,920,000 by year three with an assumed exit at a 6.25% cap rate in year seven.

On paper, the unlevered IRR is 14.3%, and the equity multiple is 1.9. It is, by every traditional metric, a credible institutional deal. But what does the broker's pro form a not show you? It does not show you that the current insurance carrier, a regional specialty writer, sent nonrenewal notices for three other properties in the same ZIP code over the last eighteen months. It does not show you that the roof, the HVAC condensers, and the drainage infrastructure are all within five years of functional end of life under current climate stress loads, not under the loads they were engineered for in 1998.

It does not show you that Houston's grid has demonstrated repeated vulnerability. Hurricane Beryl in July 2024 knocked out power to 2,700,000 CenterPoint customers, surpassing even hurricane Ike's record, and that grid hardening costs are now flowing through to commercial utility rates. It does not show you that the hundred year floodplain designation on this parcel is based on rainfall data that NOAA updated in 2018 following hurricane Harvey when Atlas 14 volume 11 revised the 1% annual storm depth for Harris County from approximately 13 inches to 18 inches, 38% increase. What was previously classified as a one hundred year storm event in Houston is now better understood as roughly a twenty five year storm. That is not a future projection.

That is already embedded in updated flood risk models. None of that is in the broker's deck. All of it belongs in your underwriting model. That is the gap that will sink you if you don't even know how to address it, and it's a thought process I have a solution for. Let's work with a tool that will help you recognize and address the pro form a gap.

It's the Climate Ready Deal Framework Deal Stress Test, the diagnostic layer that sits atop the CRDF framework. Its purpose is to surface the five categories of climate driven cost that traditional pro formas either ignore or underestimate and to model them across a ten year hold. Let me walk you through each one using our Houston class b case study. Hidden cost one, insurance trajectory. The broker's pro form a shows property insurance at $1,180 per unit per year with a 3% annual escalation.

That assumption is fiction. Industry data tracking Gulf Coast multifamily insurance premiums show compound annual increases of 14 to 45% over recent years for properties with wind and flood exposure according to the Minneapolis Federal Reserve Bank's survey of multifamily housing owners. If we model even a conservative 10% annual trajectory for the next five years then flatten to 3% thereafter, the ten year insurance expense is approximately $4,100,000 compared with the broker's 2 and a half million. The gap, $1,600,000, comes from NOI, not reserves. Hidden cost too, accelerated capital expenditure.

The broker's deck budgets 2,400 per unit for exterior and systems CapEx over the whole. That figure is derived from 1998 era useful life assumptions. Roofs in Gulf Coast climate stress zones are now being replaced on average three to five years earlier than their nameplate life. HVAC condensers exposed to extended 100 degree plus summer runs are degrading faster than specified by the manufacturer. When we apply resilience adjusted life cycle assumptions based on building performance data from the Insurance Institute for Business and Home Safety and industry CapEx benchmarking, the realistic ten year CapEx budget for this asset is closer to $4,100 per unit.

On a 184 units, that's $310,000 in additional reserves you need to fund, and it's not in the broker's model. Hidden cost three, utility cost drift. Common area electric and gas expenses in the broker's pro form a escalate by two and a half percent per year. In the Houston market, utility delivery costs have risen significantly in recent years. CenterPoint Energy's transmission and distribution charges jumped 38% in September 2024 alone, driven by post barrel grid hardening assessments and infrastructure investments.

Tariffs on imported grid components, transformers, inverters, steel poles have further pressured utility capital budgets with those costs flowing through to commercial rate payers, and that was before the current situation with the Strait Of Hormuz. If you double the escalation rate while holding the hold period constant, you lose approximately a $180,000 in ten year NOI to utility drift. That's not insurmountable, but it's an unpleasant surprise when it's missing from the model. Hidden cost four, business interruption and physical event loss. Houston has experienced multiple federally declared flood and hurricane disasters since since 2017, including Harvey, Imelda, Nicholas, winter storm Uri, and hurricane Beryl, and representing at least seven federal disaster declarations in roughly seven years.

The broker's pro form a assumes no economic vacancy due to weather events over the ten year hold. That is not a conservative assumption. It's false. If we model a single significant event every five years with a thirty day rent loss on 20% of units plus a $400,000 deductible and uncovered repair costs, the ten year drag is approximately 1,100,000 That is not in the model, and it needs to be. Hidden cost five, and this is the one that decides the deal.

The exit cap rate adjustment. The broker assumes a six and a quarter percent exit cap in year seven, but as we discussed in the last episode, lender climate risk overlays and buyer discount demands are already moving exit pricing in exposed markets. A 50 basis point cap rate expansion on $1,920,000 of stabilized NOI translates to roughly 2,300,000 of lost value at exit. That single assumption, a half point of cap rate drift driven by climate repricing, compresses the equity multiple from 1.9 to roughly 1.55 and reduces the unlevered internal rate of return from 14.3% to approximately 9.8%. Let me stack it all up.

The broker's pro form a shows a 14.3% IRR. Run the same deal through the CRDF deal stress test with climate adjusted assumptions, and the IRR lands near 10%. That is not a different deal. That is the same deal underwritten with today's and tomorrow's math. And here's the point I want to land hard.

You do not need the climate adjusted case to be a disaster scenario to change your decision. You simply need it to be realistic. So what do you do with this analysis? You do not necessarily walk away. Some deals survive the stress test.

Some deals get restructured. A few deals get better because of it. Here's how to think about the decision tree. Pathway one, reprice. You go back to the seller with a credible sourced deal stress model and ask for a purchase price adjustment that restores your target return.

In our Houston scenario, that's roughly a 2 and a half million dollar reduction or about 9% off the asking price. Some sellers will accept it, some will not. But a sourced model is a negotiating instrument that a gut feel is not. Pathway two, restructure. You keep the price and reallocate the economics.

You negotiate a seller held reserve for the accelerated CapEx. You demand a transferable insurance binder with a guaranteed first year premium. You ask for an earn out structure that shares exit cap risk with the seller. Each of these is a real tool, and each is easier to request when you have the numbers to justify it. Pathway three, reposition.

You buy the deal at the asking price, but you redirect the CapEx program to convert the hidden costs into insurable, financeable upgrades. You replace the roof with an impact rated membrane that qualifies for insurance premium credits. You upgrade the drainage and flood protection to reduce your deductible and extend your carrier relationships. You install high efficiency HVAC and envelope improvements that bent the utility curve. The capital's going out either way.

The question is whether it funds deferred risk or funds resilience. If you're looking for alpha, not beta, then know that a Climate Aware underwriting model does not kill deals. It clarifies them. It tells you which ones are mispriced, which ones are recoverable, and which ones you should never have looked at in the first place. The investors who master this diagnostic will spend the next five years buying as if they had a crystal ball because the deal will be structured correctly regardless of the, quote, unexpected.

What's your takeaway from this case study? Before you sign a letter of intent on any property this year, any property, anywhere, run the CRDF deal stress test against the broker's pro form a. Review and evaluate the insurance trajectory, the accelerated CapEx, the utility drift, business interruption, and potential exit cap rate adjustment. Those five lines test the deal. If the climate adjusted model still clears your return hurdle, you have a deal worth pursuing.

If it does not, you have a repricing conversation, a restructuring conversation, or you say goodbye. Durable returns require durable assumptions. Yesterday's pro form a is not a durable assumption. I ask the same question at the end of each brief because while the answer changes depending on the specific context, that twenty twenty hindsight is more valuable today. If you are underwriting a deal today with the benefit of already having seen ten years into the future, what would you do differently today?

Do you know what the climate risk inside your next deal is, and have you put a number on it yet? If the answer is no, the companion tool for this episode, the CRDF deal stress test, is available as a free download at climatereadyre.com. It is what we walked through today. It's built in Excel, and it's ready for you to drop your own deal assumptions into. The underlying framework, the signals, the line items, the scenario logic doesn't expire with the data.

The deal stress test is designed to be populated with your current numbers. The framework is the durable part. Take it, run your next acquisition through it, let it help you identify the signal, translate the risk, adjust the deal, capture the upside, and see what the numbers actually say so you can make a truly informed decision to reprice, restructure, or reposition. That wraps it up for today. The next brief is about the story of how insurance quietly controls real estate markets, a story and future thinking episode about a community that read the signals early, made decisions others thought were premature, and became the case study everyone else is now trying to reverse engineer.

Be sure to subscribe to Climate-Ready Real Estate Investing to receive free downloads for our market intelligence and strategy and underwriting briefs. Listen to the podcast and find us on Twitter and LinkedIn. If you'd like to be a guest on the show, you can register at climatereadyre.com, the place where resilient returns and resilient communities meet. Until next time, I'm your host, Jamie Wolf. Be good and do better for today, for tomorrow, for you, and for all.

Know your signals and be climate ready. This has been the intelligence briefing on Climate Ready Real Estate Investing, where we explore climate through a financial lens to achieve resilient returns and resilient communities. Find us on LinkedIn and Twitter. To get the Climate Ready Deal Framework to help you reevaluate your deals, go to climatereadyre.com, enter your email address, then check your inbox. See you next time.

Climate Ready Real Estate Investing is an independent intelligence briefing. We synthesize publicly available research, industry reporting, and data, sometimes with the help of AI enabled analytical tools, into commentary and analysis on the trends shaping real estate, climate risk, and the long term durability of communities. Nothing in this program is investment, financial, legal, tax, or other professional advice. Always do your own due diligence and consult qualified professionals before making decisions.