Property profile

439 Middle St Portsmouth, NH 03801

OFF-MARKET
Office buildings
Property ID
US58-0541377
4,603 SF 0.14 ac lot Built 1900
Entity Owned ~ Est. High Equity
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Property profile

Verified
Property type Office buildings
Use group OFFICE BUILDING
Year built 1900
Construction FRAME
Total area 4,603 SF
Lot 0.14 ac (6,098 SF)
Zoning code MRO
APN PRSM M:0135 B:0004 L:
UPID US58-0541377

Cap rate & NOI

Priority signal for investors
Implied cap rate, NOI & suggested price
Cap rate vs submarket · NOI estimate · 3 price anchors

Current use

Occupant on record · Public records
  • Law Firm
  • Law Firm
  • Law Firm

Location

439 Middle St Portsmouth, NH 03801-5080
Portsmouth metro Census 69100 BOSTON-CAMBRIDGE-QUINCY, MA-NH METROPOLITAN STATISTICAL AREA
Google Maps

Value estimations

Realmo proprietary · 4 methods
AI Approach AI
by Request
CAP Approach CAP
$1.30M
Comparable Approach Comparable
$1.12M
Blend (final) Blend
$1.14M

Owner & transaction history

since 2025
2 recorded transactions
2025
Price N/A
2021
Price N/A

Zoning & alternative use

MRO · Portsmouth, NH
Zoning description

Mixed Residential Office MRO To provide areas where a limited range of business establishments, including live/work units, can be located near or adjacent to residential development, providing a transition between reside…

General category MIXED_USE

Comparables

6 recent transactions · within 1.5 mi
Comparable in this city
6 recent transactions
Recent comparable sales
Sale price & price/SF · Sale date & distance · Adjustments & confidence
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