Cost of living in Portsmouth, NH — Housing, Rent & Index

The median home value in Portsmouth, NH is $798,662 as of 2026-04. That places Portsmouth above the US average for housing cost, with a cost index of approximately 225 versus a national baseline of 100.

Over the past 12 months, the median home value in Portsmouth has climbed 3.9%, and over the past five years it has averaged +7.0% annual growth. The current price sits -0.0% from its 5-year peak in 2026-03.

Renters pay a median of $2,737 per month in Portsmouth. Rents have changed +5.2% over the last year and averaged — per year over five years.

Beyond housing, day-to-day costs in Portsmouth are shaped by state and local taxes, utility rates, transportation, and groceries. This page focuses on the housing component, which is the largest single line in most household budgets and the easiest to compare across cities using consistent national data.