3 Bedroom Apartments for Rent in Mountainside, NJ (39 Rentals)

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Roommate Matching: Finding the Right Fit and Avoiding Pitfalls

When searching for a roommate, follow this list of essential steps and set clear expectations to create a solid foundation for a harmonious living situation.

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The Art of the Rental Viewing: What to look for during a property tour

Touring a rental? This guide helps you know exactly what to look for, from safety features to hidden flaws, so you can confidently sign your lease or keep searching.

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27 Diven St
3 Bedroom Apartments

27 Diven St

27 Diven StSpringfield, NJ 07081
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14 Euclid Ave
3 Bedroom Apartments

14 Euclid Ave

14 Euclid AveSummit, NJ 07901
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71 Morris Ave
3 Bedroom Apartments

71 Morris Ave

71 Morris AveSummit, NJ 07901
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616-618 Stirling Pl
3 Bedroom Apartments

616-618 Stirling Pl

616-618 Stirling PlWestfield, NJ 07090
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78 Orchard St
3 Bedroom Apartments

78 Orchard St

78 Orchard StSummit, NJ 07901

Smart Renter's Guide: Calculating Affordable Rent & Housing Costs

Wondering how to determine your rental budget? This comprehensive guide covers everything from the 30% rule to hidden fees and effective budgeting strategies.

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Villas on the Park
3 Bedroom Apartments

Villas on the Park

25-51 Springholm DrBerkeley Heights, NJ 07922
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900 South Ave W
3 Bedroom Apartments

900 South Ave W

900 South Ave WWestfield, NJ 07090
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100 E Broad St
3 Bedroom Apartments

100 E Broad St

100 E Broad StWestfield, NJ 07090
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Pineview Gardens
3 Bedroom Apartments

Pineview Gardens

884 S Springfield AveSpringfield, NJ 07081
  • Utilities Included

Navigating the Rental Market: Tips for First-Time Renters

Entering the rental market? Learn these simple tips and strategies to avoid common pitfalls and make confident choices. Rent with peace of mind.

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Beechwood at Summit
3 Bedroom Apartments

Beechwood at Summit

43 Woodland AveSummit, NJ 07901
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501 South
3 Bedroom Apartments

501 South

501 South Ave WWestfield, NJ 07090
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Worthington House
3 Bedroom Apartments

Worthington House

160-174 Summit AveSummit, NJ 07901
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Showing Results 1-39, Page 1 of 1

Mountainside, NJ Local Guide

Largest Available Mountainside 3 Bedroom Apartments

The largest available 3 Bedroom apartment unit in Mountainside, NJ is found at Glenside in the Crestwood neighborhood and is 2,715 square feet priced from $4,995. Providence Place in the Benders Corner neighborhood has the second largest 3 Bedroom, which is sized at 2,237 square feet and currently listed start at $6,000. Here is today’s list of the largest available 3 Bedroom units in Mountainside:

Apartment ListingModel NameSquare FootagePriced From
Glenside$1.84/sq.ft. - Three Bedroom Townhome2,715 Sq Ft$4,995
Providence Place$2.68/sq.ft. - Townhome B2,237 Sq Ft$6,000
The Parc at Summit3 Bedroom TH Renovated2,220 Sq Ft$4,200
Springfield Gardens3 Bed / 2.5 Bath w Loft Townhome1,929 Sq Ft$4,400
Parkside at Westfield$3.37/sq.ft. - Three Bedroom Corner Lux1,781 Sq Ft$6,045
New England VillageThe Whittredge1,529 Sq Ft$4,100
Lakeside at Briant Park$2.96/sq.ft. - Three Bedroom1,215 Sq Ft$3,595

Cheapest Available Mountainside 3 Bedroom Apartments

As of March 09, 2026 the lowest priced 3 Bedroom apartment unit in Mountainside, NJ is the $2.96/sq.ft. - Three Bedroom Model starting from $3,595 at Lakeside at Briant Park in the South Mountain neighborhood. The second most affordable Mountainside 3 Bedroom is the The Whittredge Model at New England Village starting at $4,100 in the Benders Corner neighborhood. The average price for all 3 Bedroom apartments in Mountainside is currently $4,361. Here is today’s list of the cheapest available 3 Bedroom options in Mountainside:

Apartment ListingModel NamePriced From
Lakeside at Briant Park$2.96/sq.ft. - Three Bedroom$3,595
New England VillageThe Whittredge$4,100
The Parc at Summit3 Bedroom TH Renovated$4,200
Springfield Gardens3 Bed / 2.5 Bath w Loft Townhome$4,400
Glenside$1.84/sq.ft. - Three Bedroom Townhome$4,995
Providence Place$2.68/sq.ft. - Townhome B$6,000
Parkside at Westfield$3.37/sq.ft. - Three Bedroom Corner Lux$6,045

Don't Settle: How to Negotiate Your Apartment Lease and Save Money

Discover the insider tips from an attorney and real estate agent on how to negotiate your next apartment lease. Find out what's on the table and what's not, so you can save money and get the best terms possible.

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The Ultimate Long-Distance Moving Checklist: Tips from a Real Estate Pro

Moving is tough, especially long-distance. Learn how to minimize stress & expenses with proven strategies from a real estate pro, covering everything from logistics to finances.

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Cash or credit? Understanding the Importance of Credit Score in Real Estate and Renting

Discover how your credit score impacts your ability to lease or buy a home. Learn how credit scores are determined, how to check yours, and strategies to improve it for real estate success.

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Quick Rent Budget Calculator

How much rent can you afford?

The common "Rule of Thumb" is that rent should be no more than 30% of your income. How much is that? Enter your monthly income and click "Calculate My Budget" to find out.

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Remember the 3 Rules of Real Estate:
Location, Location, Location!

Explore Mountainside, NJ Rentals by Map

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See the most popular apartments and homes in Mountainside, NJ

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Frequently Asked Questions about 3 Bedroom Mountainside Apartments

How much is the average rent for a 3 Bedroom Mountainside Apartment?

The average rent for a 3 Bedroom Apartment in Mountainside is $4,361.

What is the largest available 3 Bedroom Mountainside Apartment for rent?

Today's apartment with the most square footage in Mountainside is a 2,715 square feet unit starting from $4,995 at Glenside.

What is the average size for Mountainside 3 Bedroom Apartments for rent?

The average size for a 3 Bedroom rental in Mountainside is currently 1,049 sq ft.

Expert Rental Resources

The rental experts at ApartmentHomeLiving.com provide you with top advice, tools, and tips for understanding the leasing process and finding the perfect rental. Here are a few helpful rental and leasing articles from our experts to guide you on your search.

Articles, How-To's, and Tips

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Renting with Roommates: Realistic Expectations for Shared Lease

Written by: Christine Leonard, Esq.

Given the high costs for housing, I have found that many people are looking for a roommate to share expenses. These arrangements can increase opportunities for more desirable and larger spaces.

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Maximizing Your Refund: Essential Tax Tips for Renters

Written by: Christine Leonard, Esq.

Other than tax professionals, I can’t think of anyone who looks forward to tax season. For everybody else, April is a stressful month to collect information and meet deadlines.

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18 Must-Ask Rental Tour Questions That Reveal the Truth about a Property

Written by: Lauren Harrington

Renting your next home can feel thrilling and overwhelming at the same time.

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A Renters Guide for Tips on Writing Your Notice for Not Renewing Your Apartment

Written by: Bob Mallory

Packing up everything you own to move is so stressful for many that ending your apartment lease can feel like a small or unimportant task. Ending your lease involves more than simply turning over your keys on the last day.