Gilmanton’s tax maps in New Hampshire are available two ways: online through the AxisGIS portal linked from the town’s website, and on paper at the Assessing Department during office hours.1Gilmanton, NH. Town of Gilmanton Each map is a scaled drawing of a section of town showing every taxable parcel, its boundaries, its approximate acreage, and a unique Map and Lot number that connects the land to the assessment record behind your tax bill.
What a Tax Map Actually Shows
Every parcel in Gilmanton carries a Map and Lot number. That number is the identifier the town uses for assessment, tax collection, abatement applications, and deed references, so it appears on your annual tax bill and in any correspondence with the Assessing Department. The map itself shows the shape and approximate size of each parcel, linear dimensions along property lines, and the position of lots relative to roads, water, and neighbors.
Tax maps are drawn for assessment purposes. They reflect the town’s best understanding of where parcels sit, but they are not legal surveys. If you need to settle where a boundary actually runs, for a fence, a building project, or a dispute with a neighbor, you need a certified survey from a licensed surveyor. The Belknap County Registry of Deeds holds recorded survey plans going back to 1765 and can help you find one if a prior owner had the land surveyed, though not every property has a plan on file.2Belknap County. Register of Deeds3Belknap County Registry of Deeds. Belknap County Registry of Deeds
Searching the Online Portal
Gilmanton’s digital tax maps run on AxisGIS, reachable from the town website. The portal pairs the map view with current assessment data, so a single lookup returns both the parcel outline and the tax numbers tied to it.
Open the portal and use the search bar. You can enter a street address, the owner’s name, or the Map and Lot number. The Map and Lot number is the fastest and least ambiguous route; if you have your tax bill, the number is printed on it. The map centers on the parcel and highlights its boundaries, and a pop-up window shows the assessed value, land characteristics, and other tax-related details.
Layer controls let you overlay aerial photography, topographic contours, and other reference data on top of the parcel lines. Zoom and pan tools help you compare lot sizes along a road or see how a neighborhood is laid out. If you want a copy to keep, the portal has a print function that produces a PDF of whatever view you have on screen, and you can also download a parcel report that summarizes the assessed value and land features in one document.
Looking Up a Parcel in Person
The Gilmanton Assessing Department is open Monday through Thursday, 8:30 a.m. to 5:00 p.m.4Gilmanton, NH. Assessing Staff can pull hard copies of the tax maps, help you find your Map and Lot number if you don’t have a bill with you, and explain how a parcel’s assessed value was calculated. Billing and payment questions go to the Tax Collector’s office rather than Assessing.
If you’re researching a parcel you don’t own and only know the address, start at the Assessing Department to get the owner’s name. The Belknap County Registry of Deeds indexes its records by owner, not by address or Map and Lot number, so you need a name before deed research is practical.3Belknap County Registry of Deeds. Belknap County Registry of Deeds
Reading the Assessed Value on Your Parcel
New Hampshire law requires taxable property to be assessed at market value, meaning what the land and buildings would reasonably sell for between a willing buyer and a willing seller. The tax map ties your parcel to that assessed value, and the value drives your bill.
Your bill is the assessed value multiplied by the tax rate, divided by 1,000. Gilmanton’s total 2025 rate is $15.25 per $1,000 of assessed value, made up of four components:5New Hampshire Department of Revenue Administration. 2025 Municipal Tax Rates
- Local education: $10.04
- Municipal: $3.35
- State education: $1.01
- County: $0.85
A property assessed at $300,000 would owe roughly $4,575 for the year at that rate. Local education accounts for about two-thirds of the bill, which is typical in much of New Hampshire. The Department of Revenue Administration recalculates these rates annually, so the number shifts from year to year.
If the Record on Your Parcel Is Wrong
When you pull your parcel up and the acreage, lot dimensions, or building description doesn’t match what’s actually there, call the Assessing Department. A wrong square footage on a building or an incorrect lot size can inflate your assessed value, and the department can often fix straightforward data errors without any formal process.
Disputes about the assessed value itself, rather than a factual error in the record, follow a different track. You file a written abatement application with the selectmen or assessors by March 1 after the tax bill is issued; filing before the final bill or after that date results in denial, and the application must carry your original signature and state specifically why the assessment is wrong.6New Hampshire General Court. New Hampshire Revised Statutes Chapter 76 Section 76-16 Before filing, it’s worth checking comparable sales on the AxisGIS portal to see whether your assessment is actually out of line with what similar Gilmanton properties have sold for. If it isn’t, an abatement is unlikely to succeed.