Monthly multifamily market intelligence for local, state, national, and global context. Published by NVest Analytics. Every figure is sourced and dated.
September 2026
Boston MSA. Multifamily
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The Month in Three Parts
How We Got Here
Boston never overbuilt: permitting has run well below typical levels and deliveries slowed through 2025 to 2026, keeping vacancy under 5% [144][159].
Nationally, construction fell to 475,000 units, 3.5% of inventory and the lowest since 2013 [27][28].
Agency 5-year quotes ran 5.14 to 5.29% in March [40] before the 10-year Treasury climbed from 4.19% on Jan 2 to 4.78% on Sep 4 [1].
The Fed committee held rates at 3.50 to 3.75% on Jul 29, but three members voted to raise them [17][18].
Boston ranked eighth nationally in 2025 transactions: $3.2 billion across 43 properties at $346,859 per unit, the highest price per unit on the list [121].
Where We Are Now
Vacancy fell to 4.9% in Q2; asking rents $2,999, up 1.1% year over year, with the strongest quarterly growth since early 2023 [144][159].
Year-to-date absorption of 3,667 units is running ahead of 2,451 delivered [144].
Pricing: cap rates expanded modestly to 5.2%, with newer assets well inside that [144].
Inflation is still above target: CPI 3.4% in July, PCE 3.7% in July [36][216]. SOFR is 3.66% [35].
Pricing gap: 5.2% vs. agency 5-year debt at 6.07% [40], negative leverage of about 87 basis points.
The rent-control threat is off the table for now: the Supreme Judicial Court blocked the 2026 ballot initiative in June, so the statewide ban stands [160].
Where We're Headed
Rates: futures markets price about a 58% chance of a quarter-point increase on Sep 16, after peaking near 66% following the Jackson Hole speech [217]. If it lands, agency 5-year fixed rates extrapolate to roughly 6.2 to 6.3% [1][40].
Supply: about 13,300 units underway, 4.4% of inventory, but completions and permitting are slowing, so the pipeline thins from here [144].
Massachusetts employment was flat to negative in 2025 (-0.4% year over year in Q1 2026) and GDP growth is projected at 0.8 to 1.3% [161]; metro population growth slowed to 11,991 people, the weakest post-pandemic year [162].
The AvalonBay and Equity Residential merger will force the sale of two downtown towers (1 and 10 Emerson Place) under an Aug 19 settlement with the Attorney General [163].
Net: Boston is a low-supply, high-price market with a soft economy. Affordability keeps renters renting; the risk is jobs, not supply.
What It Means for Boston
The rate direction has flipped. Three Fed votes to raise rates and a 10-year Treasury at 4.78% mean the "wait for cuts" plan is over for 2026. Owners with loans maturing in 2026 or 2027 should model a refinance at 6.0 to 6.5% [1][17][18].
Highest price per unit on the list. $346,859 in 2025 sales [121]; cap rates 5.2% against 6.07% debt is about 87 basis points of negative leverage [144][40].
Fundamentals are firm. Vacancy 4.9%, absorption 50% ahead of deliveries, strongest quarterly rent growth since 2023 [144][159].
Rent control is deferred, not dead. The SJC kept it off the 2026 ballot [160]; expect it back in 2028.
The economy is the soft spot. Statewide employment down 0.4% year over year and the slowest population growth since the pandemic [161][162].
Boston Multifamily
Boston is a low-supply, high-price market. Vacancy dipped to 4.9% in Q2, absorption is running 50% ahead of deliveries, and rents posted their strongest quarter since early 2023. Cap rates have drifted up to 5.2%. The soft spots are jobs and population, both flat to slightly negative, and a rent-control fight that has been deferred rather than settled.
The largest cities in the Boston-Cambridge-Newton, MA-NH metro. Rent and rent growth from Apartment List (Aug 2026); multifamily units permitted (buildings of 5+ units) from the Census Building Permits Survey. Permits lead construction by 12 to 24 months. Rows alphabetical; hover a row for detail.
MF units permitted, 2026 through Jul Census BPS [208]
2026 permit pace vs. 2025 annualized
Boston
$2,515
+1.3%
1,867
1,048
-4%
Cambridge
$3,162
+2.3%
34
270
+13x
Framingham
$1,932
-3.7%
10
46
+689%
Lowell
$1,802
-1.4%
141
115
+40%
Norwood
$2,447
-0.7%
8
277
+58x
Quincy
$2,295
-0.5%
112
156
+139%
Weymouth Town
$2,067
-0.4%
141
0
-100%
Boston Transactions and Deal Flow
Boston deal flow in August was institutional and suburban, led by Bell Partners and BGO's $96 million purchase of Reading Commons, plus a forced divestiture of two downtown towers under the AvalonBay and Equity Residential merger settlement.
Property
Submarket
Units
Buyer / Seller
Price / Cap
Reported
Winthrop Center, residential component
Downtown Boston
Millennium Partners; $281M PACE financing from Nuveen Green Capital through MassDevelopment
Agency lending (Fannie Mae and Freddie Mac) remains the workhorse: a combined $176 billion cap for 2026, half of which must go to affordable housing. As of Aug 31 low-leverage agency loans price in the mid-5s and higher-leverage quotes sit just above 6% [40]. Across all multifamily products, quotes run 5.43% to 6.63% [220]. CBRE put the average multifamily loan spread at 162 basis points in Q2, 15 tighter than a year ago, with lenders competing on price rather than leverage [219]. Bank bridge money runs SOFR plus 225 to 325 basis points, debt funds SOFR plus 300 to 450.
Agency Multifamily Rates, 2026 Trend
Freddie Mac indicative 5-year fixed at 1.25x debt coverage and 65% loan-to-value, top of the published range. One source throughout. Hover the points.
Source: BWE Market Rates [40], one rate sheet at three dates (Jan 20, Mar 9 and Aug 31, 2026). Indicative levels only; Freddie Mac prices each loan individually and does not publish pricing.
Lending Landscape
Programs, caps, and terms relevant to Boston owners.
Massachusetts is trailing the nation. Employment was unchanged year over year in late 2025 and down 0.4% in the first quarter of 2026, and MassBenchmarks projects GDP growth of 0.8 to 1.3%. The Boston metro added only 11,991 residents in 2025, its slowest post-pandemic year. The rent-control ballot question was blocked in June; the statewide ban stands.
Sources: MassBenchmarks / UMass Donahue Institute [161]; Dallas Fed [9].
State-Level Operating Factors
Costs and policy that hit Boston net operating income directly.
Factor
Status
Read-through
Property insurance
Coastal wind exposure; premiums rising with the national trend
Secondary to taxes and regulation
Property tax
Boston values +2.6% to $226.4B in FY25; FY26 roll published; commercial-residential classification shift debate continues [167]
Watch the residential-commercial tax split
Population and migration
Metro +11,991 in 2025 to 4.40M, slowest post-pandemic growth [162]
Domestic out-migration offsets immigration
Regulation
Rent-control initiative barred from the 2026 ballot by the SJC; statewide prohibition intact [160]
Expect a renewed push in 2028
Peer metros (Q2 2026)
Chicago occupancy 94.9%, rents +3.2% [133]. Seattle vacancy 6.7% [122]. Charlotte vacancy 4.0% [99]
Boston and Chicago share the low-supply profile
National Rates and the Fed
The Fed held at 3.50 to 3.75% in July with an unusual three-member vote in favor of raising. Futures now put a quarter-point increase at the Sep 15 to 16 meeting at about 58%, after the Jackson Hole speech pushed the odds as high as 66%. The 10-year Treasury closed Sep 4 at 4.78%, its highest of the year, and August payrolls came in at 162,000 with unemployment steady at 4.1%.
Sources: Federal Reserve [17]; U.S. Treasury, Sep 4 [1]; BWE rate sheet, Aug 31 [40]. Decomposition is illustrative; spreads vary by leverage, term, and borrower, and a 5-year agency loan is priced off the 5-year index, not the 10-year.
10-Year Treasury vs. 30-Year Mortgage Rate, 1980 to today
Why apartments rent: the mortgage rate sets the cost of buying a house, and the gap between it and the Treasury is the part of that cost the market has added since 2022. Monthly averages, percent. Lower panel: mortgage rate minus Treasury, in percentage points. Hover for any month.
Sources: FRED series DGS10 [191] and MORTGAGE30US [192], monthly averages of daily and weekly data, refreshed each build (2026-09-04).
Global Backdrop
Global bond yields moved higher again as central banks turned from cutting to tightening. The European Central Bank raised its deposit rate to 2.25% in June, the Bank of Japan reached 1.00% for the first time since 1995, and the Japanese 10-year crossed 3% on Sep 2. Energy prices are elevated on Strait of Hormuz supply disruption, which adds to inflation.
10-Year Government Bond Yields
Where the U.S. sits vs. peers. Hover a bar for context.
Sources: U.S. Treasury, Sep 4 [1]; Bank of England, Sep 2 [209]; Deutsche Bundesbank, Sep 4 [210]; Japan Ministry of Finance, Sep 3 [211]. All four are the issuing authority's own published series.
Global Policy and Risk Snapshot
Central-bank posture and macro risks that feed into Boston borrowing costs.
Factor
Status
Why Boston cares
European Central Bank
Deposit facility 2.25%, raised from 2.00% effective Jun 17, 2026 [212]
The first ECB increase of this cycle; keeps global yields anchored higher
Bank of England
Bank Rate 3.75%, held Jul 30; next decision Sep 17 [209]
Gilt yields still rising to 4.70%, an inflation worry [209]
Bank of Japan
Policy rate 1.00%, raised Jun 16 and held Jul 31 [213]. JGB 10-year 2.97%, above 3% on Sep 2 [211]
Less Japanese demand for Treasuries, so higher U.S. yields
Oil and energy
Elevated Brent $96.02, WTI $91.48 on Sep 1; Hormuz flows 4.9 million barrels a day in Q2 [214]
Minus for inflation and Fed posture; no local energy offset
U.S. dollar
Index 99.16 on Sep 4, down 0.5% over the month and up 1.4% year to date [38]
A weaker dollar makes U.S. property cheaper for foreign buyers
Sources: European Central Bank [212]; Bank of England [209]; Bank of Japan [213]; Japan Ministry of Finance [211]; EIA [214]; Trading Economics [38].
BWE: Market Rates, as of Aug 31, 2026 (Fannie Mae DUS and Freddie Mac conventional fixed-rate ranges by term, DSCR and LTV tier); earlier BWE sheets as of Jan 20, 2026 and Mar 9, 2026 via the Internet Archive
Disclosures. Compiled Sep 4, 2026 from publicly available sources; figures are as reported by each source on the date shown and have not been independently verified. Where sources conflict, the range is shown. Items marked "Data unavailable" were not published or not captured in the period. Not investment advice.
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