Revolutionizing · Modernizing · SimplifyingRevolutionizing · Modernizing · SimplifyingMountain Brook and Northern Plains are both neighbourhoods of Longmont, CO. There are 5 homes for sale in Mountain Brook and 10 in Northern Plains as this page loaded. Northern Plains is the more expensive of the two: a median asking price of $1,799,950 against $529,990 in Mountain Brook, about 240% higher. By the foot it is $273 in Mountain Brook against $709 in Northern Plains. A typical home is 2,031 square feet in Mountain Brook and 2,796 in Northern Plains, built around 2023 and 1974 respectively. Homes are moving faster in Mountain Brook: a median of 31 days on the market against 126 in Northern Plains. Both are in the St. Vrain Valley RE-1J school district, so the difference between them is the assigned schools rather than the district.
| Measure | Mountain Brook | Northern Plains |
|---|---|---|
| For sale today | ||
| Homes for sale | 5 | 10 |
| Median asking price | $529,990 | $1,799,950 |
| Cheapest home for sale | $450,000 | $998,000 |
| Dearest home for sale | $799,000 | $3,995,000 |
| Median price per sq ft | $273 | $709 |
| Median days on market | 31 | 126 |
| The homes themselves | ||
| Median size (sq ft) | 2,031 | 2,796 |
| Median bedrooms | 3 | 4 |
| Typical year built | 2023 | 1974 |
| What actually sold, last 12 months | ||
| Homes sold | 12 | 10 |
| Median sold price | $514,370 | $1,172,000 |
| Schools the homes for sale are assigned to | ||
| School district | St. Vrain Valley RE-1J | St. Vrain Valley RE-1J |
| Elementary | Blue Mountain | Hygiene |
| Middle | Altona | Westview |
| High school | Silver Creek | Longmont |
| Getting around, out of 10 | ||
| Walkability | 5/10 | 4/10 |
| Transit | 4/10 | 2/10 |
| Biking | 6/10 | 5/10 |
| Quiet | 7/10 | 6/10 |
| Calm streets | 7/10 | 7/10 |
| Getting around | 7/10 | 7/10 |
The darker figure in each row is the lower price, the shorter wait, the bigger number or the higher score — which of those is good news depends entirely on whether you are buying or selling, and on what you want from a street.
Mountain Brook is a well-established residential neighborhood in south Longmont, offering a suburban feel with convenient access to shopping, dining, and recreation. Tree-lined streets and single-family homes create a stable, family-oriented community. The area benefits from proximity to downtown Longmont and major retail corridors, while maintaining quieter residential pockets.
Northern Plains is a growing residential neighborhood in north Longmont, characterized by newer suburban development and family-oriented streets. The area offers a mix of single-family homes and townhomes with good access to schools, parks, and shopping corridors. Daily life centers around local amenities, outdoor recreation, and commuting via car to employment centers throughout the Front Range.
Northern Plains is more expensive. The median asking price is $1,799,950 in Northern Plains against $529,990 in Mountain Brook. By price per square foot they run $273 in Mountain Brook and $709 in Northern Plains, which is the fairer comparison when the homes are different sizes.
A typical home for sale is 2,031 square feet in Mountain Brook and 2,796 square feet in Northern Plains, with a median of 3 and 4 bedrooms respectively.
Going by the homes on the market today, Northern Plains is the older of the two: a typical home there was built around 1974, against 2023 in Mountain Brook.
Homes for sale in Mountain Brook have been listed a median of 31 days, against 126 days in Northern Plains. Over the last twelve months 12 homes sold in Mountain Brook and 10 in Northern Plains, which is the better measure of how busy each one is.
Both are in the St. Vrain Valley RE-1J school district. The homes for sale in Mountain Brook are most often assigned to Blue Mountain Elementary, Altona Middle, Silver Creek High School; in Northern Plains it is Hygiene Elementary, Westview Middle, Longmont High School. School assignment can change, so confirm with the district before it decides anything.
Symbio rates Mountain Brook 5 out of 10 for walkability, against 4 for Northern Plains. On transit they score 4 and 2.
They are not a monthly snapshot. Both neighbourhoods are worked out from the live MLS feed every fifteen minutes and both sides are read from the same instant, so the two sides are always measured against each other rather than against different weeks. The exact moment is stamped at the foot of this page.
Both neighbourhoods come from the live MLS feed, worked out again every fifteen minutes, and both are read from the same instant, so the two sides are always comparable. Figures cover residential homes; rentals, land and commercial are excluded, as are fractional co-ownership shares, which are priced per share and would distort the medians. Sold figures cover the last twelve months. Schools shown are the ones the homes for sale today are assigned to and can change - check with the district before relying on them. Market data is deemed reliable but not guaranteed.
These figures were worked out from the live MLS feed at November 7, 2026 at 2:38 AM Mountain time, and are recomputed every fifteen minutes.