What it costs to own a home in Londonderry, NH
Beyond principal and interest, the biggest ongoing cost of owning a home in Londonderry is property tax: the 2025 rate is $14.47 per $1,000 of assessed value, about $121 a month for each $100,000 of assessed value. Homeowners insurance, heating and, for condos, association dues come next. Your lender counts taxes, insurance and dues when it figures what you can afford.
By Tom MacDonald, Loan Officer · Checked October 30, 2026Elite Mortgage GroupNMLS #2748687Company NMLS #2502308MBR
Property tax
About $1,447 a year, or $121 a month, for each $100,000 of assessed value; on a home assessed at $450,000, about $543 a month (NH DRA, 2025). Londonderry's 2025 equalization ratio was 94.6%, so assessments were close to market value, according to the town's assessing office. See the Londonderry property tax and records guide for how to look up any home's assessment.
Homeowners insurance
Your lender requires homeowners insurance with the lender named on the policy, and proof of coverage before closing. Premiums depend on the home (age, roof, heating system, distance to a hydrant), so get quotes as soon as you're under contract.
Heating
Heating is a real line in a New Hampshire budget. Ask the seller for a year of fuel or electric bills and how old the system is. The NH home heating guide compares oil, propane, natural gas and heat pumps.
Water and sewer
Ask whether the home is on public water and sewer or a private well and septic system; it affects your monthly costs and your inspection plan.
Condo and association dues
If you buy a condo or a home in an association, the monthly dues count in the payment a lender uses to qualify you.
One-time costs when you buy
Closing costs, plus New Hampshire's real estate transfer tax: $0.75 per $100 of the price, paid by both the buyer and the seller. Your Loan Estimate lists your costs within 3 business days of applying.
Moving from Massachusetts?
New Hampshire has no broad-based tax on wages, though Massachusetts can still tax wages you earn there. The MA vs NH cost calculator compares the two for your situation.
Londonderry housing at a glance
| Census (ACS 2020-2024) | Londonderry |
|---|---|
| Housing units | 10,197 |
| Median home value (owner-estimated) | $505,200 (± $19,574) |
| Median year built | 1986 |
| Single-family share | 80% |
Housing facts only. Estimates have margins of error.
Next step: Want the full monthly picture for a specific Londonderry home? Send Tom the address and he'll lay out taxes, insurance and the loan options side by side. No credit pull to start. Tom MacDonald, Loan Officer, Elite Mortgage Group · NMLS #2748687 · Company NMLS #2502308MBR.
Sources
- NH DRA, 2025 municipal tax rates (Londonderry $14.47): https://www.revenue.nh.gov/sites/g/files/ehbemt736/files/documents/2025-municipal-tax-rates.pdf
- Fannie Mae Selling Guide B7-3-02, property insurance requirements (as cited in the site's homeowners insurance guide): https://selling-guide.fanniemae.com/sel/b7-3-02/property-insurance-requirements-one-four-unit-properties
- Fannie Mae Selling Guide B3-6-02, debt-to-income ratios (taxes, insurance and dues count): https://selling-guide.fanniemae.com/sel/b3-6-02/debt-income-ratios
- NH RSA 78-B:1, real estate transfer tax: https://gc.nh.gov/rsa/html/V/78-B/78-B-1.htm
- CFPB, Loan Estimate: https://www.consumerfinance.gov/owning-a-home/loan-estimate/
- NH DRA, Interest and Dividends Tax (NH taxes no wages): https://www.revenue.nh.gov/taxes-glance/interest-dividends-tax
- Site guides: guide-nh-home-heating, guide-homeowners-insurance-nh, guide-well-and-septic-nh, ma-vs-nh-cost-calculator
- U.S. Census Bureau ACS 2020-2024 5-year estimates (B25001, B25024, B25035, B25077), as compiled in site-src/hudson/acs_2024.json
- Town of Londonderry, Tax Rates & Equalization Ratios: https://www.londonderrynh.gov/172/Tax-Rates-Equalization-Ratios
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