Brookline Rent Control: What Really Happened in the Brookline Rental Market?

Brookline is at the center of one of the most consequential housing debates in Massachusetts. In November 2023, Town Meeting narrowly approved a home-rule petition (112–107) asking the state legislature for permission to cap annual rent increases. Now, a 2026 statewide ballot measure could bring rent stabilization to every city and town in the Commonwealth.

The argument for these measures rests on a core assumption: that rents in places like Brookline have spiraled out of control and the market has failed tenants. But has it?

We obtained a decade of closed rental transaction data from the MLS Property Information Network (MLS-PIN) — the primary listing service used by real estate professionals across New England — covering every recorded rental in Brookline from January 2016 through early March 2026. In total: 10,388 individual transactions, each with a closing rent, bedroom count, square footage, property type, and location.

The picture that emerges from this data is far more nuanced — and far less alarming — than the rhetoric suggests.

The Big Picture: 3.6% Annual Growth

Over nine full calendar years (2016–2025), the median monthly rent across all unit types in Brookline rose from $2,600 to $3,590. That translates to a compound annual growth rate (CAGR) of approximately 3.6%.

For context, the Consumer Price Index for the Boston-Cambridge-Newton metro area averaged roughly 3.3% annual growth over the same period, according to data from the Federal Reserve Bank of St. Louis (FRED) and the Bureau of Labor Statistics. In other words, Brookline rents have roughly tracked the cost of everything else.

Year-Over-Year: The Real Numbers

Advocates for rent control often point to individual years where rents jumped. And yes, there was a significant spike in 2022. But the year-over-year data tells a critical story about why that spike happened — and what came after.

Source: MLS-PIN closed rental transactions, Brookline MA. 2026 partial-year data (89 transactions through early March) excluded from trend analysis.

The COVID Distortion

The single most important thing to understand about Brookline’s rental data is the COVID-era disruption. In 2020, median rents fell 4.6%. In 2021, they dropped another 3.6%. Transaction volume in 2021 surged to 1,478 — the highest in our dataset — as landlords flooded the market with units at reduced rates to fill vacancies.

The cumulative decline from the 2019 peak ($2,883) to the 2021 trough ($2,650) was roughly 8%. When rents then rose 17% in 2022, they weren’t breaking new ground — they were recovering to approximately where they would have been had the pre-pandemic trend simply continued.

Broken Down by Bedroom Count

Aggregate numbers can mask important variation. Here’s what happened at each bedroom count — with a focus on studios and one-bedrooms, the units most relevant to the affordability conversation.

Median monthly rent by bedroom count. Source: MLS-PIN. Studio = 0 bedrooms. Sample sizes: Studio (704), 1BR (3,037), 2BR (3,739), 3BR (1,824), 4BR (811).

Studios: 2.3% CAGR

From $1,788 to $2,200 over nine years. That’s a compound annual growth rate of just 2.3% — meaningfully below inflation. A studio renter in Brookline is paying roughly the same in real (inflation-adjusted) terms as they were a decade ago.

One-Bedrooms: 2.9% CAGR

From $2,200 to $2,850. At 2.9% annually, one-bedroom growth has also been below or roughly at the rate of general inflation. Note also the remarkable stability from 2023 to 2025: rents moved from $2,788 to $2,850 — essentially flat for two years.

Two-Bedrooms: 3.4% CAGR

Two-bedrooms are the most common unit type in the dataset (3,739 transactions). Their 3.4% CAGR is right in line with CPI.

Rent Growth vs. Inflation: A Direct Comparison

One of the strongest tests of whether a market is “out of control” is comparing rent growth directly to the Consumer Price Index. If rents are consistently and significantly outpacing inflation, there may be a structural problem. If they’re tracking it — or lagging behind — the market is functioning normally.

Boston-area CPI-U annual rates sourced from FRED/BLS. “Rent − CPI” shows how much rents moved above or below general inflation each year.

Out of nine years, rents trailed inflation in four of them — including, crucially, the most recent year (2025). Yes, 2022 and 2023 saw rents outpace CPI significantly, but those years were the recovery from back-to-back rent declines. Zoom out and the picture is clear: over the full decade, rent and inflation have moved in rough lockstep.

What the Proposed Rent Control Would Actually Do

Brookline’s home-rule petition, approved at Town Meeting in November 2023, would cap annual rent increases at CPI + 3%, up to a maximum of 7%. The 2026 statewide ballot measure would cap increases at CPI or 5%, whichever is lower.

Here’s the irony: in most years of the past decade, Brookline’s actual rent growth was already below both of these proposed caps.

Caps calculated based on Boston CPI-U. Brookline cap = min(CPI+3%, 7%). State ballot cap = min(CPI, 5%). “Bind” = actual increase exceeded the cap.

Under Brookline’s own proposed cap, actual market rents would have been constrained in only 2 out of 9 years — and both were the COVID recovery years. Under the state ballot measure’s more restrictive formula, the cap would bind in 4 out of 9 years, including 2017 and 2019 when rent growth was moderate and well within historical norms.

This raises a fundamental question: if the market is already producing rent increases below the proposed cap in 7 out of 9 years, what problem is the regulation solving?

The Self-Correcting Market

Perhaps the most compelling pattern in this data is the market’s ability to self-correct. When demand collapsed during COVID, rents dropped — meaningfully. When demand returned, rents recovered. And now, with the recovery behind us, growth has settled to a pace that is actually below inflation.

This is what a functioning market looks like. Prices respond to supply and demand, adjusting both upward and downward as conditions change. Rent control, by contrast, is a one-way ratchet: it can slow increases but cannot facilitate the kind of natural corrections the data shows already happen.

What This Data Doesn’t Capture

Transparency demands acknowledging limitations. This analysis is based on MLS-listed rental transactions — units actively marketed and closed through the MLS system. It does not capture lease renewals (where landlords may raise rent on existing tenants), off-market private arrangements, or the experience of any individual renter.

It’s possible that some tenants have experienced rent increases larger than the medians reported here, particularly at turnover. It’s also possible that the MLS data skews slightly higher than the overall market, as professionally managed and higher-end units may be overrepresented.

But as a measure of the market rate — what a new tenant would pay for a unit in Brookline — this is the most comprehensive dataset available, and it tells a consistent story across 10,000+ data points.