About 21 Charles St #221B

Disclaimer: Disclaimer: This apartment rental information is for advertising purposes only as to the apartment and/or property noted. The broker, South End Realty Group, has no contractual relationship with the property owner through the advertisement itself for payment of any rental fee or commission. All prospective renters/tenants should sign a fee disclosure which clearly states the responsible party - landlord or renter/tenant - for any fees due to the broker for any apartment and/or property rental.
6 days on RentalSource
RentalSource last checked: 11 hours ago · Listing updated: November 7, 2026
Listed by Tim Anastasia · (617) 875-9391
Listing data quality - We review listings daily to detect outdated, duplicate, or misleading information.

Property Summary

Property Type: Apartment
Rental Fee: $6,399
Bedrooms: 3 beds
Bathrooms: 2 baths
Size: 1,305 sqft
Pets: No
Laundry: Inquire
Parking: Inquire
Available: November 17, 2026
ID: 84707899

Leasing Information

Lease term: 12 months.

Additional Details

This 3-bedroom, 2-bathroom apartment at 21 Charles St #221B in Cambridge, MA 02141 rents for $6,399 a month. It has 1,305 square feet. 21 Charles St #221B was advertised by Tim Anastasia on November 7, 2026.

How the Rent Compares

At $6,399 a month, this apartment is well above the typical rent for 3-bedroom apartments and condos in Cambridge (about $4,530).

From 78 three-bedroom apartments and condos listed in Cambridge on RentalSource in November 2026: the scale holds eight in ten of them, and the shaded band the middle half.

$4,530Typical rent for 3-bedroom apartments and condos in Cambridge
$4,000–$5,190Middle half of their rents
37 daysAverage time they have been listed

See 3+ bedroom rentals in Cambridge

Rent History

The rent has dropped twice since it was listed on September 19, from $6,579 to $6,399.

Rent history for this home, newest first
DateEventRentChange
October 16, 2026 Price change $6,399−1.5% −1.5%
October 2, 2026 Price change $6,499−1.2% −1.2%
September 19, 2026 Listed for rent $6,579

These are listed prices. What renters actually paid may have been different.

Affordability Calculator

Can I afford to live at 21 Charles St #221B?
Bedrooms
3 bedrooms
30%
10% Recommended 50%
Move the slider to select the percentage of your monthly income you're comfortable spending on rent. Typically, it's advised to spend about 30% or less on housing.
Recommended income
$255,960 /year
With your chosen rent-to-income ratio, an annual income of $255,960 is recommended to comfortably afford this 3-bedroom rental priced at $6,399 per month.
For more information on rent affordability, visit our rent calculator or rent vs. buy calculator.

Commute

How long would the trip to work or school be from here? Add where you go, and see the drive, bike ride or walk from this home and from every home you look at.

Apartment for rent
$6,399
Can I afford this home?
Interested in 21 Charles St #221B?
Find out more about this property & see if it's available now.
Property listed by
Tim Anastasia
(617) 875-9391
Avoid rental scams - Situations involving wire transfers or a landlord who can't meet you in person can be red flags.
21 Charles St #221B, Cambridge, MA 02141
Apartment for rent
$6,399
Can I afford this home?
Interested in 21 Charles St #221B?
Find out more about this property & see if it's available now.
Property listed by
Tim Anastasia
(617) 875-9391
Avoid rental scams - Situations involving wire transfers or a landlord who can't meet you in person can be red flags.
$6,399
Apartment for rent
1 of 1
21 Charles St #221B, Cambridge, MA 02141 - Apartment for Rent - Image 1

Ask About 21 Charles St #221B

21 Charles St #221B, Cambridge, MA 02141 - Apartment for Rent

Similar Apartments in 02141

Discover Nearby Apartments

What's New on the Blog

Explore recent posts on our blog, curated for renters, landlords, and industry pros.

List Your Property for Rent

Are You a Rental Professional?

Advertise on RentalSource, Zillow, Realtor.com, Zumper and more to attract quality tenants faster and take your listings to the next level.