Listing Agency: The Boulos Company c***@boulos.com Show Phone

Listed By: Caitlin Burke · License #071626 Show Phone

Source: Elliman

Added: Nov 28, 2025 Changed: Aug 20 Last Checked: Aug 24 at 9:35AM

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Investment Insights

Based on property information with market context.

This Class A office space is available for sublease. The property is located at 90 Arboretum Drive in Portsmouth, New Hampshire. Notably, this is New England's first mass timber frame office building.

Key Highlights

• New England's 1st mass timber frame office building
• Class A office space
• Located at 90 Arboretum Drive, Portsmouth, NH

Property Analytics

Current Use

Office Units

Lease Details

NNN (Triple Net)

Lease Type

$3.30 /SF/Yr

CAM

Location Intelligence

Trade Area within ½ mile

498

Businesses Nearby

Explore this area Business Placement

Demographics for 03801, NH

22,767

Population

11,448

Households

2

Avg Household Size

43

Median Age

63%

College-Educated

98%

High-School Grad

23.8 sq mi

ZIP Area

957

Density / Sq Mi

$106,520

Median Household Income

$65,984

Median Earnings

$1,783

Median Rent

$647,500

Median Home Value

Market

Lease Benchmarks for Portsmouth, NH

$18.63 /SF/Yr

Avg Asking Price

$1.11–$44.92 /SF/Yr

Price Range

7,957 SF

Avg Space Size

This space is priced 18% above the average of $18.63 /SF/Yr.

Vacancy Rate% for Office in Northeast region

13.1% 2019

15.4% 2020

17.6% 2021

19.1% 2022

20.2% 2023

20.9% 2024

19.9% 2025

Questions? Ask Rey

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What type of property is this? Where is this office units located? What is the lease rate? Find similar properties ... What are key features of this property?

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Frequently Asked Questions

What type of property is this?

Office units - Class A office space for sublease in Portsmouth, NH.

Where is this office units located?

The property is located at 90 Aboretum Dr Portsmouth, NH.

What is the lease rate?

The lease rate is $22 SF/Yr.

What are key features of this property?

This property features: New England's 1st mass timber frame office building; Class A office space; Located at 90 Arboretum Drive, Portsmouth, NH