Boston's Building Boom Isn't Saving Renters: How a Glut of Luxury Units and a Shortage of Affordable Ones Is Squeezing Both Sides of the Lease

The Boston Planning Department approved 14 new residential projects in June alone, adding a projected 1,840 units to the pipeline across Dorchester, East Boston, and the Seaport. On paper, that looks like progress. On the ground, median asking rents in Boston hit $3,420 for a one-bedroom in the second quarter of 2026, up 6.1 percent from the same period last year, according to data tracked by the Greater Boston Real Estate Board.

The disconnect matters because Massachusetts lawmakers are heading into a fall session with two competing housing bills — one backed by Mayor Michelle Wu's office that would expand the city's Inclusionary Development Policy to require 20 percent affordable units in any building over 10 units, and a competing Senate version that would drop that threshold to 15 percent in exchange for faster permitting. Neither bill has cleared committee. In the meantime, construction keeps moving and renters keep paying.

Where the New Buildings Are — and Aren't

The bulk of approved projects cluster in areas that developers call "proven submarkets." A 220-unit tower proposed for West Broadway in South Boston cleared the Zoning Board of Appeal in May. A 310-unit mixed-use building on Cambridge Street in East Cambridge got its Article 80 sign-off in April. Both projects pencil out at market rate, with affordable set-asides at the state-mandated 13 percent minimum.

What is not getting built is middle-of-the-market rental stock — the two- and three-bedroom apartments in Somerville's Winter Hill or Jamaica Plain's Green Street corridor that families with household incomes between $80,000 and $120,000 used to be able to afford. The Metropolitan Area Planning Council estimated in a March 2026 report that Greater Boston needs roughly 185,000 new units by 2030 to stabilize rents. Current approvals put the region on track to deliver fewer than 60,000 in that window.

Landlords who own smaller multifamily buildings — the three-deckers that define neighborhoods like Roslindale and Hyde Park — are squeezed from a different direction. Property insurance premiums in Suffolk County jumped an average of 22 percent between January 2025 and January 2026, according to industry figures cited by the Massachusetts Association of Realtors. Coupled with property tax assessments that rose sharply after the city's fiscal 2026 revaluation, some small owners say they are raising rents not out of greed but because their cost basis has shifted substantially underneath them.

Tenants Facing the Math

The Tenant Advocacy Project, a nonprofit based on Massachusetts Avenue in Cambridge, says its caseload hit a record 340 active households in June, up from 210 in June 2024. Most are not facing eviction — they are facing lease renewals with increases of 15 to 20 percent and no practical alternative nearby. A two-bedroom in Somerville's Davis Square now routinely lists above $3,800 a month. The same unit in 2022 would have gone for roughly $2,900.

State rental assistance through the Executive Office of Housing and Livable Communities, funded under Chapter 257 of the Acts of 2024, has a current waiting list of more than 9,000 households statewide. That program was designed to serve households earning up to 80 percent of Area Median Income — which in Greater Boston works out to about $95,000 for a family of four. Demand has outpaced funding by a factor of three since the program launched.

Developers and city officials will face a practical reckoning this fall. The Wu administration has signaled it wants to use a new Community Preservation Act funding round — the application window opens September 8 — to subsidize at least 400 deed-restricted affordable units in the Mattapan and Roxbury corridors, where land costs are lower and transit access has improved with the Orange Line frequency upgrades completed last winter. Whether that moves fast enough to matter for households signing leases in August is a different question entirely. Tenants whose renewals land on their desks this month have limited leverage and, in most of the city, no rent stabilization to fall back on. That is the Boston rental market in the summer of 2026.