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Space Availability (1)

Display Rental Rate as

  • Space
  • Size
  • Term
  • Rental Rate
  • Rent Type
  • 2nd Floor
  • 3,400 SF
  • Negotiable
  • $25.00 /SF/YR $2.08 /SF/MO $85,000 /YR $7,083 /MO
  • Triple Net (NNN)
Space Use
Office
Availability
September 01, 2026

Second-floor office suite at 49 River St offering approximately ±3,400 SF, created by combining two adjacent spaces into one seamless layout. Previously operated as a single unit, the adjoining demising wall can be removed (as illustrated) to deliver a fully connected, efficient floor plan.The space features a strong mix of private offices, open work areas, conference space, and support areas, including two restrooms and dedicated storage. Ideal for professional, medical, or service-based users seeking a flexible layout that can accommodate a variety of operational needs. Pictures only include the 1901sf space, video walk through of both spaces available upon request. TI contributions available for a 10+ yr lease.

  • Lease rate does not include utilities, property expenses or building services
  • Fits 9 - 28 People
Space Size Term Rental Rate Rent Type
2nd Floor 3,400 SF Negotiable $25.00 /SF/YR $2.08 /SF/MO $85,000 /YR $7,083 /MO Triple Net (NNN)

2nd Floor

Size
3,400 SF
Term
Negotiable
Rental Rate
$25.00 /SF/YR $2.08 /SF/MO $85,000 /YR $7,083 /MO
Rent Type
Triple Net (NNN)
Space Use
Office
Availability
September 01, 2026

Second-floor office suite at 49 River St offering approximately ±3,400 SF, created by combining two adjacent spaces into one seamless layout. Previously operated as a single unit, the adjoining demising wall can be removed (as illustrated) to deliver a fully connected, efficient floor plan.The space features a strong mix of private offices, open work areas, conference space, and support areas, including two restrooms and dedicated storage. Ideal for professional, medical, or service-based users seeking a flexible layout that can accommodate a variety of operational needs. Pictures only include the 1901sf space, video walk through of both spaces available upon request. TI contributions available for a 10+ yr lease.

  • Lease rate does not include utilities, property expenses or building services
  • Fits 9 - 28 People

Rent Types


The rent amount and type that the tenant (lessee) will be responsible to pay to the landlord (lessor) throughout the lease term is negotiated prior to both parties signing a lease agreement. The rent type will vary depending upon the services provided. For example, triple net rents are typically lower than full service rents due to additional expenses the tenant is required to pay in addition to the base rent. Contact the listing broker for a full understanding of any associated costs or additional expenses for each rent type.

1. Full Service: A rental rate that includes normal building standard services as provided by the landlord within a base year rental.

2. Double Net (NN): Tenant pays for only two of the building expenses; the landlord and tenant determine the specific expenses prior to signing the lease agreement.

3. Triple Net (NNN): A lease in which the tenant is responsible for all expenses associated with their proportional share of occupancy of the building.

4. Modified Gross: Modified Gross is a general type of lease rate where typically the tenant will be responsible for their proportional share of one or more of the expenses. The landlord will pay the remaining expenses. See the below list of common Modified Gross rental rate structures: 4. Plus All Utilities: A type of Modified Gross Lease where the tenant is responsible for their proportional share of utilities in addition to the rent. 4. Plus Cleaning: A type of Modified Gross Lease where the tenant is responsible for their proportional share of cleaning in addition to the rent. 4. Plus Electric: A type of Modified Gross Lease where the tenant is responsible for their proportional share of the electrical cost in addition to the rent. 4. Plus Electric & Cleaning: A type of Modified Gross Lease where the tenant is responsible for their proportional share of the electrical and cleaning cost in addition to the rent. 4. Plus Utilities and Char: A type of Modified Gross Lease where the tenant is responsible for their proportional share of the utilities and cleaning cost in addition to the rent. 4. Industrial Gross: A type of Modified Gross lease where the tenant pays one or more of the expenses in addition to the rent. The landlord and tenant determine these prior to signing the lease agreement.

5. Tenant Electric: The landlord pays for all services and the tenant is responsible for their usage of lights and electrical outlets in the space they occupy.

6. Negotiable or Upon Request: Used when the leasing contact does not provide the rent or service type.

7. TBD: To be determined; used for buildings for which no rent or service type is known, commonly utilized when the buildings are not yet built.

Select Tenants at 49 River St, Waltham, MA 02453

  • Tenant
  • Description
  • US Locations
  • Reach
  • Canna Care Docs Of Waltham
  • Health Care
  • 1
  • -
  • D'Angelo Grilled Sandwiches
  • Sub Sandwich
  • 88
  • Regional
  • Descar Jewelry Design
  • Jewelry/Watches
  • 1
  • -
  • Dunkin'
  • Donut Shop
  • 9,046
  • International
  • Oriental Jade Spa
  • Services
  • 1
  • -
  • Sunshine Books Inc
  • Business/Copy/Postal Services
  • 1
  • -
Tenant Description US Locations Reach
Canna Care Docs Of Waltham Health Care 1 -
D'Angelo Grilled Sandwiches Sub Sandwich 88 Regional
Descar Jewelry Design Jewelry/Watches 1 -
Dunkin' Donut Shop 9,046 International
Oriental Jade Spa Services 1 -
Sunshine Books Inc Business/Copy/Postal Services 1 -

Property Facts

Total Space Available 3,400 SF
Property Type Retail
Gross Leasable Area 13,502 SF
Year Built 1992
Parking Ratio 3.85/1,000 SF
Moderately walkable
70/100
Exceptionally drivable
90/100
Limited public transit
30/100
Moderately bikeable
70/100

Nearby Major Retailers

Shaw's
Watertown Savings Bank
Little Gym
Stop & Shop
Tempo
Rockland Trust Company
Digital Federal Credit Union
Jazzercise
  • Listing ID: 41824923

  • Date on Market: 8/20/2026

  • Last Updated:

  • Address: 49 River St, Waltham, MA 02453

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49 River St

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