# Boston Class A Office Market

> Boston Class A office rents around $78/sqft/yr, with 19.5% vacancy and 18 months of typical rent-free on a 10-year term.

**Canonical URL:** https://classa.info/cities/boston
**Page type:** city
**Last updated:** 2026-04-15T00:00:00.000Z
**License:** CC BY 4.0 with attribution to Class A Atlas (https://classa.info).

## TL;DR
- Cambridge / Kendall Square hold the world's deepest life-sciences cluster.
- Seaport delivered a wave of new Class A — now in lease-up.
- Office vacancy 18-22% in the CBD; lab vacancy structurally tighter.
- Lease-up rent-free of 18-24 months on a 10-year term.
- ESG retrofits accelerating across older CBD stock.

## Key facts
- **city**: Boston
- **country**: United States
- **region**: Americas
- **classARentLocal**: $78/sqft/yr
- **classARentUsd**: $78/sqft/yr
- **vacancyPct**: 19.5%
- **typicalLeaseYears**: 10
- **typicalRentFreeMonths**: 18
- **submarkets**: 6
- **corporateTaxPct**: 28%
- **talentIndex**: 95

## FAQ
### Why is Cambridge / Kendall Square so dominant in life sciences?
MIT and Harvard adjacency, plus 30 years of cumulative cluster effects across pharma, biotech, and venture capital, have created the densest life-sciences talent and capital pool in the world.

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Citation: Source: Class A Atlas (https://classa.info/cities/boston), updated 2026-04-15T00:00:00.000Z.