Back to Cambridge

21 Water St N

City of Cambridge

2 permits
since 2019
Mar 12, 2026
Most recent permit

Building permit timeline

Year-grouped permit history. Permits collapse under each year.

2019
2020
2021
2022
2023
2024
2025
2026
  1. 2026

    1 filing · most recent March 2026
    View permits (1)
  2. 2019

    1 filing
    View permits (1)

Nearby Construction

Within 250 m

Active and recent construction within 250 m of this address.

35 locations shown

  • 1

    15 Water St N

    Renovation
    14 m
  • 2

    12 Water St N

    Renovation
    51 m
  • 3

    26 Main St

    Renovation ×3
    66 m
  • 4

    45 Water St N

    Renovation ×2
    85 m
  • 5

    44 Main St

    Renovation
    91 m
  • 6

    15 Main St

    New Build
    92 m
  • 7

    25 Main St

    Renovation ×3
    95 m
  • 8

    29 Main St

    Renovation
    97 m
  • 9

    31 Main St

    Renovation
    98 m
  • 10

    39 Main St

    New Build
    107 m
  • 11

    58 Main St

    Renovation ×3
    108 m
  • 12

    30 Dickson St

    Renovation
    110 m
  • 13

    57 Water St N

    Renovation
    115 m
  • 14

    38 Ainslie St N

    Renovation
    122 m
  • 15

    63 Main St

    Renovation
    137 m
  • 16

    48 Ainslie St N

    Renovation
    140 m
  • 17

    15 Ainslie St N

    Renovation
    141 m
  • 18

    14 Water St N

    Renovation
    143 m
  • 19

    9 Ainslie St N

    Renovation
    144 m
  • 20

    50 Ainslie St N

    Renovation ×2
    147 m
  • 21

    69 Main St

    Renovation
    147 m
  • 22

    73 Main St

    Renovation
    165 m
  • 23

    65 Water St N

    Renovation
    167 m
  • 24

    75 Main St

    Renovation
    176 m
  • 25

    39 Grand Ave N

    Renovation
    191 m
  • 26

    90 Main St

    Renovation
    194 m
  • 27

    24 Queens Sq

    Renovation
    194 m
  • 28

    7 Melville St S

    Renovation ×3
    197 m
  • 29

    30 Water St S

    Renovation ×4
    206 m
  • 30

    87 Main St

    Renovation
    210 m
  • 31

    6 Cambridge St

    Renovation
    210 m
  • 32

    73 Water St N

    Renovation ×2 Demolition
    214 m
  • 33

    89 Main St Unit 106

    Renovation
    234 m
  • 34

    7 Grand Ave S

    Renovation
    238 m
  • 35

    50 Dickson St

    Renovation ×2
    241 m
2

New Build

48

Renovation

1

Demolition

Construction activity detected within 250 m, from the City of City of Cambridge's open data. Each pin is a City-geocoded point (which may hold more than one record/address); click for details. OGL – City of Cambridge

Nearby active addresses

Direct next steps for exploration.

21 Water St N in Cambridge has 2 building permits on record dating back to 2019, most recently on March 12, 2026.