Photo: Bryan Housel · CC BY-SA 3.061 homes sold in Mountainside in the last year, at a typical $1.1M
Almost every sale is a house. Below: what each kind of home sells for, what your budget buys, the best months to buy, how hard you’ll have to bid, and a shortcut to every site where Mountainside homes are listed.
Every place Mountainside homes are listed, in one stop
We don’t copy listings: the agents’ sites have the photos and the latest price changes. Set what you want once and we open each site already filtered to Mountainside.
For sale
Rent
New, land & open houses
Links open the listing sites; TownRatings isn’t paid for them and doesn’t rank one above another. Rentals and government-owned homes come from sources outside the MLS.
Houses are 100% of Mountainside’s sales, at a typical $1.1M
61 homes sold in the year to May 2026.
typical sale · 61 sold in 12 months
- Per square foot
- $423NJ $331
- Days to sell
- 22
- Sold over asking
- 59%
- Listings with a price cut
- 12%
Fewer homes sell than before 2021, at 1.8 times the 2016 price
61 sales in the last year, against 127 in 2020 and a low of 60 in 2025. The typical sale went from $614K in 2016 to $1.1M.
Source: Redfin Data Center, MLS sales. Typical price and $/sq ft are the monthly medians, weighted by sales.
What $1.1M buys in Mountainside
Check a listing against what Mountainside homes sold for
Against the town’s median price per square foot over the last 12 months. A rough check: condition, lot and location within town move a price more than this can see.
Bidding wars in Mountainside are more common than before the pandemic, but 86% fewer homes come up for sale
We read every month of Mountainside’s home sales since 2016 so you don’t have to. Each figure covers 12 months, because a single month in a town is too few sales to mean much. Latest: the year to May 2026, 61 sales.
If you’re buying in Mountainside
- Shop in March. It brings about 12 new listings a month, close to the busiest month, with fewer bidding wars (33% over asking).
- Less room to haggle. Only 12% of listings cut their price, against 17% before the pandemic.
- Expect to bid over asking. Buyers paid 105.8% of the list price on average; 59% paid over.
- You’ll usually have time. Only 33% of homes go under contract within two weeks; the typical one takes 22 days.
Spring brings the homes; summer brings the bidding wars
April has the most new listings (about 12 a month), but June is the most competitive: 47% of June sales close over asking. March offers nearly as much choice with fewer homes bid up (33%). January has the least competition (21%).
Averages for each calendar month, 2015 on.
Hotter than in 2021, and hotter than New Jersey
| Mountainside now | 2017–19 | 2021 peak | NJ now | |
|---|---|---|---|---|
| Sold over askingShare of sales that closed above the list price | 59% | 19% | 42% | 48% |
| Gone within two weeksShare of homes under contract within 14 days | 33% | 2% | 0% | 31% |
| Listings with a price cutShare of homes for sale that cut their price | 12% | 17% | 11% | 17% |
| Price paid vs. askingAverage sale price ÷ list price | 105.8% | 97.4% | 100.4% | 101.2% |
| Days to sellMedian days from listing to contract | 22 | 105 | 76 | 45 |
7 homes for sale on a typical day
That’s 1.2 times the 2024 low (6), 86% fewer than in 2017–19 and well under 2019’s 58.
1 in 8 listings has cut its price
12% in the last year, against 17% in 2017–19 and 17% across New Jersey.
Mountainside ranks 95th of 299 busy New Jersey markets for bidding wars
Share of sales over asking in the last year, among towns with 60 or more sales. Mountainside is in the middle of the pack.
Source: Redfin Data Center, city market tracker, January 2016 to May 2026 (MLS sales, not seasonally adjusted). Ratios are weighted by homes sold; price cuts by homes for sale.
Five things worth knowing
New listings in April
The month with the most choice. December has the fewest, about 3.
Best time to buySchools
The schools grade for Mountainside, from test results, graduation and how much students grow.
Schools in MountainsideTypical commute
The average one-way trip to work for people who live in Mountainside.
Work & commuteCheck the flood map
Flood insurance isn’t in a standard policy, and lenders require it in FEMA flood zones. Check the address before you make an offer.
Natural hazardsLook up any property
Assessed value, lot size and every past sale of a home you’re eyeing are public, at the town or county assessor and the registry of deeds.
Springfield Township and Garwood sell for less a square foot; Westfield and Summit for far more
The busier markets within 25 miles of Mountainside, by what sold. Prices, taxes and how far a paycheck goes next door are on Cost of living.
| Sold | Typical sale | $/sq ft | Over asking | Days to sell | |
|---|---|---|---|---|---|
| Westfield | 324 | $1.3M | $558 | 75% | 16 |
| Summit | 223 | $1.5M | $708 | 69% | 15 |
| New Providence | 129 | $1.1M | $523 | 71% | 16 |
| Fanwood | 84 | $786K | $460 | 79% | 21 |
| Mountainside | 61 | $1.1M | $423 | 59% | 22 |
| Garwood | 48 | $714K | $403 | 67% | 24 |
| Springfield Township | 31 | $529K | $265 | 55% | 60 |
Redfin Data Center, June 2025 to May 2026. Towns with fewer than 20 sales are left out, and Redfin doesn’t report every town separately.
Post your home to Mountainside, free
Selling it yourself, renting out an apartment or looking for a roommate? Post it to Mountainside. People who follow the town see it, and so do people comparing Mountainside with their own town. No commission, no listing fee.
Questions about buying a home in Mountainside
What do homes sell for in Mountainside, NJ?
61 homes sold in the year to May 2026 at a typical $1.1M, $423 a square foot.
Is Mountainside a buyer’s or seller’s market?
A seller’s market: 8 homes were for sale in May 2026 and 7 sold, about 1.1 months of supply. Buyers paid 105.8% of asking on average, and 12% of listings cut their price.
When is the best time to buy in Mountainside?
April brings the most new listings. The sales history shows which months have fewer bidding wars.
Where can I see homes for sale in Mountainside?
Zillow, Redfin, Realtor.com and Homes.com all carry Mountainside’s MLS listings; the search links above open each one filtered to Mountainside.
Sales, prices, days on market and listings: Redfin Data Center (MLS, monthly, not seasonally adjusted). Property tax rate: Census American Community Survey. Two-bedroom rent: HUD Fair Market Rent. Typical home value: Zillow Home Value Index. Schools grade: TownRatings (how grades work).