# San Francisco office lease norms

> Modified-gross with operating-expense escalations over a base year.

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

## TL;DR
- Typical lease length: 7 years.
- Typical rent-free: 22 months.
- Vacancy: 31.5%; trend rising.
- Modified-gross with operating-expense escalations over a base year.

## Key facts
- **city**: San Francisco
- **country**: United States
- **region**: Americas
- **classARentLocal**: $78/sqft/yr
- **classARentUsd**: $78/sqft/yr
- **vacancy**: 31.5%
- **typicalLeaseYears**: 7
- **typicalRentFreeMonths**: 22
- **submarkets**: 6
- **primeYieldPct**: 6.5%

## FAQ
### What's a typical lease term in San Francisco?
7 years for institutional Class A. Shorter terms are achievable on smaller floor plates with stronger covenants.

### How is rent quoted in San Francisco?
In USD/sqft/year. We also publish a USD-normalised view ($78/sqft/yr) for cross-market comparison.

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