New Castle, NH
Portsmouth, NH

Portsmouth & New Castle NH Commercial Listings

18Results

Check out what’s available – browse commercial real estate for sale in Portsmouth and New Castle, New Hampshire! Contact Great Island Realty for more info or to book a showing. Sign up and always stay informed on new, similar properties.

Newest
New Listing
54 Maplewood Avenue Portsmouth NH 03801

$3,440,000

Portsmouth, NH

54 Maplewood Avenue

  • 2019 Year Built
  • 7 Days on Market
MLS#: 5090820
New Listing

$275,000

Portsmouth, NH

155 Congress Street

  • 1950 Year Built
  • 0.14 Acres
  • 2,035 SqFt
  • 26 Days on Market
MLS#: 5087540
New Listing

$249,000

Portsmouth, NH

6 Greenleaf Woods Drive

  • 1987 Year Built
  • 28 Days on Market
MLS#: 5087061

$450,000

Portsmouth, NH

118 Maplewood Avenue

  • 1990 Year Built
  • 41 Days on Market
MLS#: 5084873

$12,500,000

Portsmouth, NH

40 Congress Street

  • 1878 Year Built
  • 42 Days on Market
MLS#: 5084657

$2,350,000

Portsmouth, NH

40 Bridge Street

  • 2016 Year Built
  • 48 Days on Market
MLS#: 5083644

$950,000

Portsmouth, NH

2425 Lafayette Road

  • 1900 Year Built
  • 0.19 Acres
  • 4,080 SqFt
  • 64 Days on Market
MLS#: 5081248
Active Under Contract

$5,300,000

Portsmouth, NH

93-100 Market Street

  • 1805 Year Built
  • 0.06 Acres
  • 78 Days on Market
MLS#: 5079480

$4,390,000

Portsmouth, NH

172 Hanover Street

  • 1850 Year Built
  • 12,780 SqFt
  • 92 Days on Market
MLS#: 5077945

$825,000

Portsmouth, NH

930 Route 1 Bypass

  • 123 Days on Market
MLS#: 5075314

$4,200,000

Portsmouth, NH

266 State Street

  • 0.2 Acres
  • 124 Days on Market
MLS#: 5075205

$3,300,000

Portsmouth, NH

144 Washington Street

  • 1747 Year Built
  • 0.25 Acres
  • 3,034 SqFt
  • 167 Days on Market
MLS#: 5072167
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Copyright 2026 PrimeMLS, Inc. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this display comes in part from the IDX Program of PrimeMLS. The information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated June 1, 2026 8:11 PM EDT