Do you really want to invest in Real Estate? a Husband and Wife tale
April 16, 2026
by a searcher from Dartmouth College - Tuck School of Business at Dartmouth in Cary, NC, USA
"In which a man who does financial due diligence for a living is asked by his wife to prove that buying rental property is a bad idea, and discovers - with charts-that she was right all along."
My wife told me she doesn't think buying rental property makes sense right now. I said something noncommittal like "yeah, probably." She said she wanted proof. I told her that real estate isn't really my thing - I spend my days elbow-deep in bank statements and quality-of-earnings work-papers for M&As, not analyzing cap rates. She reminded me that we own a house, that I do research for a living, and that if I could prove her right, I'd earn enough marital goodwill to justify at least one irresponsible purchase of my own (@falk-Copper, here I come). "Happy wife, happy life" is not a suggestion but a load-bearing wall in the architecture of our marriage. So here we are.
What started as a quick Saturday morning investigation turned into a full-day rabbit hole of pulling FRED data, reading NBER working papers, building return models, and arguing with an AI about the appropriate amortization period for transaction costs. What I found surprised me. Not because the answer is simple- it isn't - but because the popular narrative about real estate investing is so far from the data that it borders on folklore. My wife's instinct was better than most people's spreadsheets. Then again, she is in Finance.
This is a long post. There are many charts. There is math. There is a histogram. If you're here for the punchline: a typical rental property, fully accounting for all costs and your own time, has returned about 5.6% annually over the past quarter century, compared to 10.1% for the S&P 500, with a worse risk profile and a much worse Sharpe ratio. If you're here for the journey, keep reading.
• • •
Part 1: The Landscape - What Actually Happened to Housing
Before we can evaluate housing as an investment, we need to understand what happened to housing as a market. I pulled five core datasets, all starting in 2000, and indexed them to 100 at the beginning so we could see them on the same axis. Because a dollar of home price and a dollar of income are not the same thing, and a chart that pretends they are is lying to you.
The red line is the main character. Home prices have more than tripled since###-###-#### Income (green) roughly doubled. Everything else is flat. That divergence is the entire story of American housing in one chart.
Look at the purple line (housing units per capita). It's nearly flat at 100 the entire time. We are building roughly the same number of homes per person as we were a quarter century ago. Completions (amber) actually fell below their 2000 level - the CAGR is negative at -0.41%. And yet prices tripled. If Econ 101 says price equals supply and demand, something on the demand side moved enormously, or supply isn't really flat in the way that matters.
Both are true. Household sizes shrank (more singles, later marriage, aging-in-place), so "units per person" understates the tightness of "units per household." Credit got cheaper- the 30-year mortgage rate fell from 8% to 3% between 2000 and 2021, which meant the same monthly payment bought roughly 50% more house. Investors entered the single-family market as an institutional asset class. And the geographic concentration of demand into already-constrained markets (Austin, Phoenix, Boise) created local shortages that national averages hide completely.
• • •
Part 2: What Does a House Actually Cost to Own?
This is where the "real estate always goes up" crowd starts to get uncomfortable. Yes, prices went up. But so did every cost associated with owning the asset. I pulled the cost components from BLS Consumer Expenditure Surveys, NAIC insurance reports, and FRED vacancy data.
Rent and CPI track almost perfectly (R² = 0.983 over 25 years). Rent is inflation. It's not a growth asset - it's a cost-of-living pass-through. Prices (red) outran both by ~2.5 percentage points annually. That gap is the price-to-rent ratio expanding, which in stock terms means the "P/E multiple" of housing compressed your yield even as the sticker price went up. Over the last 5 years, prices grew at 9.64% while rents grew at 4.90%. You paid up more to own a given rental income stream.
Maintenance + insurance costs grew faster than home prices over 10 years (8.51% vs. 7.45%). Insurance premiums alone grew at 5.65% CAGR over 24 years - nearly as fast as prices themselves. Post-2020 insurance is up about 50%. For anyone in Florida or California, the individual numbers are much worse.
Meanwhile, the effective property tax rate actually fell (from 1.15% to 0.90%) because assessments lag market prices. This will eventually mean-revert as reassessments catch up, which is a ticking time bomb for current owners' cash flows.
• • •
Part 3: Okay, But What's the Actual Return?
Here's where I built the model. Annual total return on a rental property equals income yield plus price appreciation minus costs. Three scenarios: an unlevered landlord with professional management (9% fee + vacancy), a levered landlord (20% down at prevailing mortgage rates), and the S&P 500 doing absolutely nothing.
But I didn't stop at the obvious costs. I added three drags that most "RE vs. stocks" analyses conveniently forget:
The Hidden Drags
Time: 80 hours/year × $80/hour = $6,400. On a $300k home, that's 2.13% of value. On 20% equity, it's 10.67% (because leverage amplifies your unpaid labor too).
Transaction costs: ~8% round-trip (commissions, closing, transfer taxes), amortized over a 10-year hold = 0.80%/year of value. 4.00% of equity for the levered buyer.
Illiquidity: 0.50%/year, derived from Lin & Vandell (2007, USC/Fannie Mae) forced-sale discount models. Chambers, Spaenjers & Steiner (2021, Review of Financial Studies) found actual long-run net-of-costs residential real returns of just 2.3% - roughly 4 points below the headline Jordà et al. estimate.
Total annual drag: 3.43% for the unlevered landlord, 17.17% of equity for the levered one. The S&P 500, famously, costs you approximately one Vanguard expense ratio (0.03%) and zero hours of your weekend.
Read that Sharpe ratio column again. The unlevered landlord gets###-###-#### The S&P gets###-###-#### more for shorter durations, sometimes as high as 1.06 or so, or .73 for the 10 year window). The levered landlord gets###-###-#### essentially zero compensation for risk. You're taking a leveraged bet on a single illiquid asset in a specific ZIP code, and the market is paying you less per unit of risk than a Vanguard index fund you can buy in your pajamas.
Two timing observations from the chart worth noting. First, look at 2023 and 2024: the S&P (black line) returned 26% and 25% respectively while the fully-adjusted landlord earned 3–5%. That's not a small gap - it's a chasm. And this isn't a cherry-picked comparison from some freak year. This is right now, as of the time of writing (or as recently as possible with reputable dagta), with stocks humming along on AI tailwinds and mega-cap earnings while housing appreciation cools after its 2021–2022 sugar high. If you bought a rental property in 2022 instead of dumping that down payment into VOO, you are currently sitting on roughly 40–50 percentage points of foregone returns. That's not hindsight bias - the structural argument (lower mean, higher drag) predicted exactly this.
Second, the same pattern played out in 2009–2012. Stocks bounced 26.5% in 2009 and kept climbing. Housing was still falling. By the time RE bottomed in 2012, the S&P had already doubled off its lows. So during both post-crisis recoveries in the last quarter century - the two moments when you'd most want a diversified portfolio to have some assets going up - your rental property was doing nothing while the stock market was sprinting. The diversification benefit people cite for owning RE wasn't there when it mattered.
• • •
Part 4: The Shape of Your Fate
Numbers in a table are one thing. Seeing the shape of possible outcomes is another. I simulated 20,000 draws from each scenario's distribution (using mean and total standard deviation, including single-property idiosyncratic risk of ±5%) to show what a single year of ownership actually looks like in probability terms.
The blue curve (landlord) is tall and narrow. The black curve (S&P) is wider but centered higher. The amber curve (levered) is barely a bump -it's nearly flat from −100% to +100%, more like a coin flip with a slight positive bias than an investment.
Here's the thing that made me stare at this chart for a while: the landlord's best plausible year (~20%) is roughly the S&P's median year. You are giving up the entire right tail of returns in exchange for a slightly tighter left tail. The blue curve and black curve barely overlap on the upside. There is no region of the outcome space where landlording dominates stocks - not upside, not downside, not the middle.
• • •
Part 5: The Uncomfortable Takeaway
My wife asked me whether buying a rental property is a good investment. The honest answer, backed by 25 years of data from FRED, BLS, Census, NAIC, and several peer-reviewed studies, is:
It depends on whether you think earning 5.6% per year for 80 hours of labor on a concentrated, illiquid, leveraged bet in a single ZIP code is better than earning 10.1% per year for approximately zero hours of labor on a diversified, liquid basket of 500 of the best companies in the world.
Let me put it another way. Here is everything required to earn each return, side by side:
The data supports three clear conclusions:
Stocks win on raw returns and convenience. The S&P 500 returned 10.13% annually over 2001–2024. A fully-adjusted unlevered landlord returned 5.57%. That's not close. And the S&P requires no tenants, no maintenance calls at 2 AM, no property managers taking 9% off the top, and no $30,000 roof replacements every 20 years.
Unlevered RE wins on steadiness - but only before you count your time. The landlord line is objectively less volatile year to year. If you strip out the time drag, the Sharpe ratio is decent###-###-#### But "less volatile" is not the same as "better," and once you honestly value your hours, the Sharpe falls to###-###-#### well below stocks.
Levered RE is not an investment. It's a business. A 0.11 Sharpe ratio with a −36% risk floor is the statistical signature of a leveraged bet. It can work spectacularly (2021: +80% on equity) or catastrophically (2008: −74% on equity). If you can survive the drawdowns, scale to multiple properties to diversify away idiosyncratic risk, and run it like the full-time business it is, there's alpha to be had. But calling it "passive income" is like calling running a restaurant "passive eating."
What I told my wife
"You were right. The data is overwhelming and you didn't even need to see a chart. If we want to build wealth, we should keep maxing out our index funds. If we want a hobby that occasionally generates income and frequently generates plumbing emergencies, we should buy a rental property.
She told me, I should have just stopped at "You were right", and even that, usually goes without saying.
• • •
Sources & methodology: Home prices from S&P CoreLogic Case-Shiller (CSUSHPISA). Income from Census (MEHOINUSA646N). Mortgage rates from Freddie Mac (MORTGAGE30US). Vacancy from Census (USRVAC). Property tax and maintenance from BLS Consumer Expenditure Surveys. Insurance from NAIC HO-3 annual reports. CPI and Rent CPI from BLS. MDSP from Federal Reserve Z.1. S&P 500 total returns from standard annual figures. Illiquidity discount methodology from Lin & Vandell (2007, Real Estate Economics) and Chambers, Spaenjers & Steiner (2021, Review of Financial Studies). Idiosyncratic risk estimate of ±5% based on NBER Working Paper###-###-#### Eisfeldt & Demers, 2015) cross-sectional dispersion analysis. All return calculations use 7.5% starting gross rent yield in 2000 on a $150,000 representative home. Time cost assumes 80 hours/year at $80/hour. Transaction cost assumes 8% round-trip amortized over a 10-year hold. The model excludes tax treatment (depreciation, 1031 exchanges, mortgage interest deduction) which would modestly improve RE returns, and excludes catastrophic loss tail risk beyond insurance, which would worsen them.
Disclaimer: This is a personal research exercise, not financial advice. I am a due diligence consultant, not a financial advisor, real estate broker, or marriage counselor. Consult a professional before making investment decisions. Consult your spouse before publishing blog posts about them.
The red line is the main character. Home prices have more than tripled since###-###-#### Income (green) roughly doubled. Everything else is flat. That divergence is the entire story of American housing in one chart.
Look at the purple line (housing units per capita). It's nearly flat at 100 the entire time. We are building roughly the same number of homes per person as we were a quarter century ago. Completions (amber) actually fell below their 2000 level - the CAGR is negative at -0.41%. And yet prices tripled. If Econ 101 says price equals supply and demand, something on the demand side moved enormously, or supply isn't really flat in the way that matters.
Both are true. Household sizes shrank (more singles, later marriage, aging-in-place), so "units per person" understates the tightness of "units per household." Credit got cheaper- the 30-year mortgage rate fell from 8% to 3% between 2000 and 2021, which meant the same monthly payment bought roughly 50% more house. Investors entered the single-family market as an institutional asset class. And the geographic concentration of demand into already-constrained markets (Austin, Phoenix, Boise) created local shortages that national averages hide completely.
• • •
Part 2: What Does a House Actually Cost to Own?
This is where the "real estate always goes up" crowd starts to get uncomfortable. Yes, prices went up. But so did every cost associated with owning the asset. I pulled the cost components from BLS Consumer Expenditure Surveys, NAIC insurance reports, and FRED vacancy data.
Rent and CPI track almost perfectly (R² = 0.983 over 25 years). Rent is inflation. It's not a growth asset - it's a cost-of-living pass-through. Prices (red) outran both by ~2.5 percentage points annually. That gap is the price-to-rent ratio expanding, which in stock terms means the "P/E multiple" of housing compressed your yield even as the sticker price went up. Over the last 5 years, prices grew at 9.64% while rents grew at 4.90%. You paid up more to own a given rental income stream.
Maintenance + insurance costs grew faster than home prices over 10 years (8.51% vs. 7.45%). Insurance premiums alone grew at 5.65% CAGR over 24 years - nearly as fast as prices themselves. Post-2020 insurance is up about 50%. For anyone in Florida or California, the individual numbers are much worse.
Meanwhile, the effective property tax rate actually fell (from 1.15% to 0.90%) because assessments lag market prices. This will eventually mean-revert as reassessments catch up, which is a ticking time bomb for current owners' cash flows.
• • •
Part 3: Okay, But What's the Actual Return?
Here's where I built the model. Annual total return on a rental property equals income yield plus price appreciation minus costs. Three scenarios: an unlevered landlord with professional management (9% fee + vacancy), a levered landlord (20% down at prevailing mortgage rates), and the S&P 500 doing absolutely nothing.
But I didn't stop at the obvious costs. I added three drags that most "RE vs. stocks" analyses conveniently forget:
The Hidden Drags
Time: 80 hours/year × $80/hour = $6,400. On a $300k home, that's 2.13% of value. On 20% equity, it's 10.67% (because leverage amplifies your unpaid labor too).
Transaction costs: ~8% round-trip (commissions, closing, transfer taxes), amortized over a 10-year hold = 0.80%/year of value. 4.00% of equity for the levered buyer.
Illiquidity: 0.50%/year, derived from Lin & Vandell (2007, USC/Fannie Mae) forced-sale discount models. Chambers, Spaenjers & Steiner (2021, Review of Financial Studies) found actual long-run net-of-costs residential real returns of just 2.3% - roughly 4 points below the headline Jordà et al. estimate.
Total annual drag: 3.43% for the unlevered landlord, 17.17% of equity for the levered one. The S&P 500, famously, costs you approximately one Vanguard expense ratio (0.03%) and zero hours of your weekend.
Read that Sharpe ratio column again. The unlevered landlord gets###-###-#### The S&P gets###-###-#### more for shorter durations, sometimes as high as 1.06 or so, or .73 for the 10 year window). The levered landlord gets###-###-#### essentially zero compensation for risk. You're taking a leveraged bet on a single illiquid asset in a specific ZIP code, and the market is paying you less per unit of risk than a Vanguard index fund you can buy in your pajamas.
Two timing observations from the chart worth noting. First, look at 2023 and 2024: the S&P (black line) returned 26% and 25% respectively while the fully-adjusted landlord earned 3–5%. That's not a small gap - it's a chasm. And this isn't a cherry-picked comparison from some freak year. This is right now, as of the time of writing (or as recently as possible with reputable dagta), with stocks humming along on AI tailwinds and mega-cap earnings while housing appreciation cools after its 2021–2022 sugar high. If you bought a rental property in 2022 instead of dumping that down payment into VOO, you are currently sitting on roughly 40–50 percentage points of foregone returns. That's not hindsight bias - the structural argument (lower mean, higher drag) predicted exactly this.
Second, the same pattern played out in 2009–2012. Stocks bounced 26.5% in 2009 and kept climbing. Housing was still falling. By the time RE bottomed in 2012, the S&P had already doubled off its lows. So during both post-crisis recoveries in the last quarter century - the two moments when you'd most want a diversified portfolio to have some assets going up - your rental property was doing nothing while the stock market was sprinting. The diversification benefit people cite for owning RE wasn't there when it mattered.
• • •
Part 4: The Shape of Your Fate
Numbers in a table are one thing. Seeing the shape of possible outcomes is another. I simulated 20,000 draws from each scenario's distribution (using mean and total standard deviation, including single-property idiosyncratic risk of ±5%) to show what a single year of ownership actually looks like in probability terms.
The blue curve (landlord) is tall and narrow. The black curve (S&P) is wider but centered higher. The amber curve (levered) is barely a bump -it's nearly flat from −100% to +100%, more like a coin flip with a slight positive bias than an investment.
Here's the thing that made me stare at this chart for a while: the landlord's best plausible year (~20%) is roughly the S&P's median year. You are giving up the entire right tail of returns in exchange for a slightly tighter left tail. The blue curve and black curve barely overlap on the upside. There is no region of the outcome space where landlording dominates stocks - not upside, not downside, not the middle.
• • •
Part 5: The Uncomfortable Takeaway
My wife asked me whether buying a rental property is a good investment. The honest answer, backed by 25 years of data from FRED, BLS, Census, NAIC, and several peer-reviewed studies, is:
It depends on whether you think earning 5.6% per year for 80 hours of labor on a concentrated, illiquid, leveraged bet in a single ZIP code is better than earning 10.1% per year for approximately zero hours of labor on a diversified, liquid basket of 500 of the best companies in the world.
Let me put it another way. Here is everything required to earn each return, side by side:
The data supports three clear conclusions:
Stocks win on raw returns and convenience. The S&P 500 returned 10.13% annually over 2001–2024. A fully-adjusted unlevered landlord returned 5.57%. That's not close. And the S&P requires no tenants, no maintenance calls at 2 AM, no property managers taking 9% off the top, and no $30,000 roof replacements every 20 years.
Unlevered RE wins on steadiness - but only before you count your time. The landlord line is objectively less volatile year to year. If you strip out the time drag, the Sharpe ratio is decent###-###-#### But "less volatile" is not the same as "better," and once you honestly value your hours, the Sharpe falls to###-###-#### well below stocks.
Levered RE is not an investment. It's a business. A 0.11 Sharpe ratio with a −36% risk floor is the statistical signature of a leveraged bet. It can work spectacularly (2021: +80% on equity) or catastrophically (2008: −74% on equity). If you can survive the drawdowns, scale to multiple properties to diversify away idiosyncratic risk, and run it like the full-time business it is, there's alpha to be had. But calling it "passive income" is like calling running a restaurant "passive eating."
What I told my wife
"You were right. The data is overwhelming and you didn't even need to see a chart. If we want to build wealth, we should keep maxing out our index funds. If we want a hobby that occasionally generates income and frequently generates plumbing emergencies, we should buy a rental property.
She told me, I should have just stopped at "You were right", and even that, usually goes without saying.
• • •
Sources & methodology: Home prices from S&P CoreLogic Case-Shiller (CSUSHPISA). Income from Census (MEHOINUSA646N). Mortgage rates from Freddie Mac (MORTGAGE30US). Vacancy from Census (USRVAC). Property tax and maintenance from BLS Consumer Expenditure Surveys. Insurance from NAIC HO-3 annual reports. CPI and Rent CPI from BLS. MDSP from Federal Reserve Z.1. S&P 500 total returns from standard annual figures. Illiquidity discount methodology from Lin & Vandell (2007, Real Estate Economics) and Chambers, Spaenjers & Steiner (2021, Review of Financial Studies). Idiosyncratic risk estimate of ±5% based on NBER Working Paper###-###-#### Eisfeldt & Demers, 2015) cross-sectional dispersion analysis. All return calculations use 7.5% starting gross rent yield in 2000 on a $150,000 representative home. Time cost assumes 80 hours/year at $80/hour. Transaction cost assumes 8% round-trip amortized over a 10-year hold. The model excludes tax treatment (depreciation, 1031 exchanges, mortgage interest deduction) which would modestly improve RE returns, and excludes catastrophic loss tail risk beyond insurance, which would worsen them.
Disclaimer: This is a personal research exercise, not financial advice. I am a due diligence consultant, not a financial advisor, real estate broker, or marriage counselor. Consult a professional before making investment decisions. Consult your spouse before publishing blog posts about them.
from California State University, Northridge in Los Angeles, CA, USA
from Dartmouth College in Cary, NC, USA