Mercer Island, WA Office Units for Rent & Lease

Updated: Nov 21, 2025

Mercer Island Office Space Available

7834 SE 32nd Street, Mercer Island, WA 98040

$900/Mo

5,006 sqft

Convenient access to I‑90.
Large parking area with plenty of parking spaces.
Quiet Mercer Island location.
Suitable for professional offices or medical uses.
Conveniently located near residential areas.

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Updated: Aug 10

Office Unit with Monument Signage

9675 SE 36th St, Mercer Island, WA 98040

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3,577 sqft

3,577 RSF office suite with eight private offices
Conference room, storage, and breakroom included
Parking ratio of 3/1,000 SF
Access to Seattle and Eastside destinations via I‑90
Monument signage opportunity

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Top-Floor Office Suite with Reception Area

9311 SE 36th St, Mercer Island, WA 98040

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348 sqft

Top-floor suite offers a windowed private office plus a non-windowed reception/work area in the Ogden Building.

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Office Suite with Reception

9311 SE 36th St, Mercer Island, WA 98040

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823 sqft

Office space features three private offices, a work room/reception area, and storage space.

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Class A Second-Floor Office Space

2758 78th Avenue SE, Mercer Island, WA 98040

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5,028 sqft

Second-floor office with three conference rooms, eight private offices, open and kitchenette space in a Class A setting.

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Mercer Island Office Space Available

7426 SE 27th St, Mercer Island, WA 98040

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1,977 sqft

Office space for rent in Mercer Island, Washington.

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Office Suite with Abundant Natural Light

7834 SE 32nd St, Mercer Island, WA 98040

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300 sqft

Office suite with a functional layout and abundant natural light, offering quick access to I-90.

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Office Units with Private Offices

9725 SE 36th St, Mercer Island, WA 98040

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1,118 sqft

Office units offer private offices, surface parking, and high-speed internet with easy I-90 access.

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Office Suite with Private Offices

9725 SE 36th St, Mercer Island, WA 98040

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1,347 sqft

Well-maintained office suite with private offices, landscaped entry, and surface parking onsite.

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Based on your search, we've compiled 13 Potential Opportunities for your consideration. Besides 9 Active listings in Mercer Island, WA, we suggest exploring alternatives. Consider Similar 4 Spaces in Nearby Cities

Office Units for Lease in Nearby Cities

Here are 4 Similar Spaces we found in Nearby Locations for your consideration.

Bellevue Office Space Available

1745 114th Ave SE, Bellevue, WA 98004

Contact for pricing

32,573 sqft

Office space for rent at 1745 114th Avenue SE.

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Office Units

1715 114th Ave SE, Bellevue, WA 98004

Contact for pricing

856 sqft

Office units available for rent at 1715 114th Ave SE, Bellevue, WA 98004.

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Office Space for Lease

1715 114th Ave SE, Bellevue, WA 98004

Contact for pricing

1,798 sqft

Office space available for lease totaling 1,798 square feet.

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Office Space for Lease

1715 114th Ave SE, Bellevue, WA 98004

Contact for pricing

2,144 sqft

Office space totaling 2,144 square feet is available for lease.

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Mercer Island, WA Office Units Lease Rates & Market Statistics

Explore 9 Office Units for lease in Mercer Island, WA on Realmo, a commercial real estate exchange covering the Mercer Island area. The current inventory totals 19,524 square feet of properties.

Office Units lease rates in Mercer Island range from $900/Mo at the entry level to $900/Mo at the top of the market, averaging $900/Mo. Pricing across the market is relatively uniform, which simplifies like-for-like comparison between listings.

Mercer Island accounts for 1% of the 906 office units currently available across King County, where nearby markets include Seattle and Bellevue. Office Units make up 69% of the 13 Office Spaces currently for lease in Mercer Island. Tenants comparing options may also consider Office buildings (3 listings) elsewhere in the Mercer Island market.