Blog · October 14, 2026 · Colorado
Using the Longmont Plat Map
A recorded plat shows how land near Berthoud was divided into lots.
Main page: Weld County, CO GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Buying a lot in a subdivision near Mead? What you want is the Longmont plat map, because the recorded plat shows how the land was divided. Covered here for Longmont: where to request a copy, plat versus tax map, and the details that matter to buyers.
Tracking down the Longmont plat map
For a lot in Longmont, the deed or parcel record often names the subdivision and plat reference; use it to request a copy.
Getting to the right map
Property in and around Frederick can be looked up on the Weld County parcel viewer, which opens without registering. When a rural tract has no street number, pan along the nearest road until the lines appear, then click inside the one you want, which applies near Dacono as much as anywhere. If you're looking near Frederick, a pop-up or side panel typically gives the owner of record, acreage on the tax roll, a parcel ID and often a sale date.
Longmont and the county around it
Longmont lies within Weld County, Colorado, which means parcel data comes from the county. On ground around Berthoud, city or town hall handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Land beyond the city limits near Firestone usually falls under county rules, not municipal ones.
Weld County in a few facts
Greeley serves as the county seat, where most land records are kept. Other places on the map include Mead, Frederick, Firestone, and Erie. Roughly 359,442 people call Weld County home (Census estimate, 2023) across roughly 3,985 square miles. Weld County was formed in 1861, and some chains of title near Erie are long. Landmarks such as Pawnee National Grassland are easy to spot when you zoom out from Frederick.
Replats and vacations
Lots near Berthoud can be combined or reconfigured by a replat, search the index for replats of the same subdivision; vacated streets or alleys also get recorded.
How a plat differs from the tax map
Where lines don't match in Longmont, go with the plat and a surveyor's work.
On site with the map
Most viewers work in a phone browser, useful out on a road near Dacono, so load it before you lose signal. A screenshot of the parcel near Dacono with its ID keeps working without signal.
A word on accuracy
Acreage on the record is an assessed number; just a licensed surveyor sets the real boundary for a parcel near Erie. In and around Erie, owner names and values update on a schedule, so a deed recorded last month may not show yet.
Reading the legal description
Colorado is laid out under the Public Land Survey System, so deeds around Berthoud reference sections and townships. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though sections near Dacono can be irregular. Keep the legal description for land near Mead before you request a deed or survey.
Neighboring parcel maps
Weld County meets Adams County, Boulder County, Broomfield County, Larimer County, and Logan County, and each of those keeps its own parcel map. Acreage along the edge near Erie can be split in two county records, so check the adjacent map as well. With a lot near Erie, our state page links each bordering county map for Colorado.
Getting answers from the right desk
For assessment questions about property around Frederick go to the County Assessor, which maintains the tax roll. Building or septic questions for a lot near Firestone go to planning, building or health offices, town or county, depending on location.
Reading the plat sheet
Easements on the plat near Erie stay with the land when it sells; check the plat notes and any covenants.
Land outside a subdivision
Acreage around Dacono outside a subdivision may have no plat at all; the deed and any recorded survey describe it instead.
Online indexes and office visits
For property near Berthoud, some counties put plat images online, otherwise call or visit with the reference; small fees are common.
Recorded documents worth pulling
For anything that matters, get the recorded deed through the County Clerk and Recorder; the parcel map near Berthoud only summarizes it. Long-held tracts around Erie can trace back through many deeds, and a title company is worth hiring if money is changing hands.
Quick answers
What is a lot and block description around Mead?
It depends, but it points to a spot on the plat for that subdivision near Erie; the deed names the subdivision.
Are old plats online around Mead?
Short answer: the County Clerk and Recorder can say what's available; call before you visit.
Is a plat map a survey near Dacono?
Near Dacono, GIS parcels are tax drawings, and the recorded plat is the legal document; trust the plat when they differ.
What do the dashed lines on a plat mean around Erie?
Short answer: building on an easement near Mead is generally restricted, so check before you build.
How do I save a parcel from the viewer in Longmont?
Some viewers offer PDF export; include the record panel for the lot near Mead.
Open the official Weld County, CO parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.