Flats on First embodies the best of boutique living, combining the luxuries of a modern apartment community with the comforts of a close-knit neighborhood. Come home to a place of sophistication and serenity in East Cambridge.
Status: Special offer
Apartment building
Studio-2 beds
Pet-friendly
Other parking
In-unit laundry (W/D)
Available units
This listing now includes required monthly fees in the total monthly price. Price shown reflects the lease term provided for each unit.
 Unit 317B Studio, 1 ba | 443 | Nov 29 | $3,161 |
Unit 523B Studio, 1 ba | 465 | Feb 16 | $3,161 |
 Unit 404C 1 bd, 1 ba | 718 | Nov 23 | $3,817 |
 Unit 102C 1 bd, 1 ba | 896 | Nov 21 | $4,017 |
 Unit 315B 1 bd, 1 ba | 1,101 | Now | $4,617 |
 Unit 507B 2 bd, 1 ba | 909 | Nov 24 | $4,841 |
 Unit 405C 2 bd, 2 ba | 977 | Jan 9 | $5,461 |
What's special
Game room
Stay in, get your game on
This building features a game room. Less than 3% of buildings in Cambridge have this amenity.
3D tour
Flats on First Apartments
Office hours
| Day | Open hours |
|---|---|
| Mon - Fri: | 10 am - 6 pm |
| Sat: | 10 am - 5 pm |
| Sun: | Closed |
Property map
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Facts, features & policies
Building Amenities
Community Rooms
- 24-Hour Fitness Center
- Game Room
Other
- In Unit: Full-Size, High Efficiency Washer/Dryer
Outdoor common areas
- Balcony: Balconies*
- Barbecue: Grilling And Al Fresco Dining
- Courtyard: Landscaped Courtyards With Outdoor Seating
Security
- Butterflymx Intercom System
Services & facilities
- Bicycle Storage: Bike Storage
- Package Service: 24-Hour Package Room
View description
- Roof Deck With City Views
Unit Features
Appliances
- Dryer
- Washer
Flooring
- Luxury, Wood-Grained Vinyl Flooring
Policies
Parking
- Controlled Access Parking Garage
- Other
Pet essentials
Additional details
Dogs and Cats | Restrictions: None
Special Features
- Co-Working Spaces
- Community Kitchen And Dining
- Direct Access Entry*
- Gourmet Kitchens With Stainless Steel Appliances
- Groom Room
- Open Air Amphitheater
- Open Floor Plans
- Outdoor Lounges With Fire Pits
- Pet Friendly
- Quartz Countertops
- Schlage Smart Locks
- Social Spaces With Complimentary WiFi
- Stand-Up Showers*
- Walk-In Closets*
Neighborhood: East Cambridge
Areas of interest
Use our interactive map to explore the neighborhood and see how it matches your interests.
Travel times
Getting around
Walk Score®
 / 100
Walker's ParadiseTransit Score®
 / 100
Rider's ParadiseBike Score®
 / 100
Biker's ParadiseNearby schools in Cambridge
Cambridgeport School
Grades PK-5 • 1.1 miles9/10
GreatSchools® Rating
Test Score Rating
9/10Student Progress Rating
9/10Kennedy-Longfellow School
Grades PK-5 • 0.5 miles5/10
GreatSchools® Rating
Test Score Rating
4/10Student Progress Rating
5/10Cambridge Rindge and Latin School
Grades 9-12 • 1.8 miles8/10
GreatSchools® Rating
Test Score Rating
7/10College Readiness Rating
9/10Living in Cambridge
East Cambridge sits between the Charles River and the Cambridge-Somerville line, with a mix of historic streets, converted industrial buildings, and newer development. The neighborhood’s industrial past is visible around the former Cambridge Gas Works site, now the CambridgeSide area, while the Museum of Science stands just across the river. North Point Park offers paths, lawns, and river views; nearby paths connect to longer walks and bike rides along the Charles. Dining and coffee options range from neighborhood cafés to restaurants and food spots around CambridgeSide, with additional shopping at the mall. Kendall/MIT’s galleries, public art, and nightlife are close by, and the Green Line’s Lechmere station, buses, and bike routes make trips around Cambridge and Boston convenient. East Cambridge neighborhood listings have a median rent of $3,675 per month, with a typical range of $1,310 to $19,157.
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Frequently asked questions
Where is Flats on First located, and what is the neighborhood like?
Flats on First is located at 21 Charles St in East Cambridge, Cambridge, MA. The surrounding area includes multiple restaurants and cafes within 2 miles, such as Tatte, Cafe Beatrice, and Tatte.
What is the average rent in Cambridge, MA?
Based on the latest Zillow data, the median rent across all unit types in the East Cambridge neighborhood of Cambridge is currently $3,675 per month. Prices vary by neighborhood, floor plan, and building amenities.
What schools are assigned to Flats on First?
The schools assigned to Flats on First include Cambridgeport School, Kennedy-Longfellow School, and Cambridge Rindge and Latin School.
What are the grocery stores and everyday shopping options near Flats on First?
Flats on First is located near 3 grocery stores, including Whole Foods Market (0.8 miles) and Whole Foods Market (0.8 miles). Additional shopping options, including UNIQLO, are approximately 1 mile away.
What is the minimum and maximum rent for Flats on First?
The total price for an apartment unit in Flats on First ranges from $3,161 to $5,461. The total price will vary by floor plan, unit size, and unit amenities.
