Mortgage payment estimates, closing cost breakdowns, and homebuying data for Portsmouth, New Hampshire.
Median Home Price
$625K
Population
22K
Avg Monthly Rent
$2,150
Property Tax Rate
2.09% *
* Property tax shown is the New Hampshire state average effective rate. Actual rates vary by county, city, and school district — check with your local assessor for exact rates in Portsmouth.
Portsmouth vs New Hampshire Median
The median home price in Portsmouth is $625,000, which is 45% above the New Hampshire state median of $430,000.
Mortgage Calculator — Portsmouth, NH
Pre-filled with Portsmouth median home price and New Hampshire tax/insurance rates. Adjust for your property.
Three down payment scenarios for a $625K home using New Hampshire's 2.09% tax rate and $1,400/yr insurance.
5% Down
$5,304/mo
Down: $31,250
Loan: $594K
P&I: $3,753
Tax: $1,089
Insurance: $117
PMI: $346
10% Down
$5,089/mo
Down: $62,500
Loan: $563K
P&I: $3,555
Tax: $1,089
Insurance: $117
PMI: $328
20% Down (No PMI)
$4,366/mo
Down: $125,000
Loan: $500K
P&I: $3,160
Tax: $1,089
Insurance: $117
Income needed (28% rule): $187K/year with 20% down, $218K/year with 10% down.
Rent vs Buy in Portsmouth
Rent
$2,150/mo
vs
Buy (10% down)
$5,089/mo
Price-to-rent ratio: 24.2 — At a ratio above 20, renting may be more economical in Portsmouth for shorter stays. Buying costs $2,939 more per month than renting, and it typically takes 5-7 years to break even on the transaction costs of buying.
The median home price in Portsmouth is $625,000, 45% above the New Hampshire state median of $430,000. With a population of 22,158, Portsmouth is a smaller market where home prices reflect strong demand and local economic factors.
Property taxes in New Hampshire average 2.09% annually. This higher-than-average tax rate means a $625,000 home in Portsmouth would carry roughly $1,089/month in property taxes alone — plan accordingly. Homeowners insurance in New Hampshire runs approximately $1,400 per year. This is within the normal range nationally.
Average rent in Portsmouth is $2,150/month. With a price-to-rent ratio above 20, renting could be more economical in the short term — use our Rent vs Buy calculator to model your specific timeline.
Portsmouth is a higher-cost market. At $625K median, buyers need significant savings or strong income. Down payment assistance through New Hampshire's NHHFA Home Flex Plus program becomes especially important.
Run a Rent vs Buy analysis
Compare total costs of renting vs buying in Portsmouth.