Riverhead, NY Office Spaces for Rent

Find the best Riverhead, NY office space among 15 for rent listings currently on the market.

East Main Office Center

877 East Main Street, Riverhead, NY
Property

Office

103,263 SF
Availability

1 Space

25,000 SF
Year Built

1993
For Lease

$24.00/SF/YR
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East End Commons

607 Old Country Road, Riverhead, NY
Property

Office

70,165 SF
Availability

1 Space
For Lease Contact for pricing
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8 E Main St

8 E Main St, Riverhead, NY
Property

Office

4,200 SF
Availability

2 Spaces

4,200 SF
For Lease Contact for pricing
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940 Roanoke Ave

940 Roanoke Ave, Riverhead, NY
Property

Unassigned

5,936 SF
Availability

1 Space

1,200 SF
Year Built

1976
For Lease

$24.00/SF/YR
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Riverhead Plaza

795 Old Country Road, Riverhead, NY
Property

Retail

205,727 SF
Availability

1 Space

2,970 SF
Year Built

1966
For Lease Contact for pricing
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20 Riverleigh Ave

20 Riverleigh Ave, Riverside, Riverhead, NY
Property

Retail

15,500 SF
Availability

1 Space

2,022 SF
Year Built

2000
For Lease Contact for pricing
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Tiana Plaza Shopping Center

250 West Montauk Hwy, Hampton Bays, NY
Property

Retail

80,878 SF
Availability

4 Spaces

18,000 SF
Year Built

1996
For Lease Contact for pricing
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240 W Montauk Hwy

240 W Montauk Hwy, Hampton Bays, NY
Property

Office

4,800 SF
Availability

2 Spaces

4,800 SF
Year Built

2002
For Lease Contact for pricing
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Building 2

157 W Montauk Highway, Hampton Bays, NY
Property

Office

5,950 SF
Availability

1 Space

5,950 SF
For Lease Contact for pricing
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315 Westphalia Rd

315 Westphalia Rd, Mattituck, NY
Property

Office

460 SF
Availability

1 Space

460 SF
For Lease

$2,200.00/MO
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Enterprise Park - 221 David Court

221 David Court, Calverton, NY
Property

Office

74,000 SF
Availability

1 Space

37,000 SF
Year Built

1985
For Lease

$18.00/SF/YR
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Frequently Asked Questions

Asking prices vary based on the property location, rating, amenities such as proximity to restaurants, cafes, and entertainment venues, as well as convenience of access to public transport, airports, and thoroughfares.
Most experts recommend an average of between 75 and 150 square feet of office space per person. However, it is important to keep in mind that how much office space you ultimately need depends on your activity and how you need to use the space, as much as it does on how many people it should accommodate. If you already know what size office would best suit your needs, use the available space size filter at the top of the search page to focus your search on the best fit for you.

You’ll find a home for almost any size of business in Riverhead, as the local office market offers a wide range of options. Office spaces currently on the market go up to as much as 25,000 square feet in size for an individual listing.
You can find 6 office listing(s) for lease in Riverhead, which add up to a total of 29,200 square feet. Availability on the market includes a variety of office use types, such as General Office.

The most common office use type currently available for lease in Riverhead is General Office, which is offered in 3 or 50.00% of listings.
Sublease opportunities on the market include General Office.
The best choice of neighborhood for your office space will greatly depend on the elements that are most relevant to your business and your employees. However, a good criterion to start with is to look at the areas of the city that have the highest concentration of office properties, as these areas are generally well connected to transit options and have a good degree of amenity availability.
Each individual’s commuting experience will of course be different depending on a number of factors. Check the location description details for the office listings that catch your eye, to get an overview of walkability, access to public transport, the quality of infrastructure dedicated to biking commuters, as well as the proximity to parking facilities, fuel stations, and other essential amenities.
The Riverhead office market incorporates a mix of properties of various ages, ratings, construction grades, and other quality indicators. Class B office space accounts for 16.67% of spaces listed on the leasing market. Class C office space makes up 16.67% of office space available in Riverhead.
There are, of course, a lot of things to factor in when you are looking for office space. Aspects including the accessibility of the location, the quality of the facility, the size of the space, the convenience of nearby amenities, the type and duration of the lease, and of course the cost are all part of the search and decision process. For a quick checklist of what you should take into account when researching the market, consider these seven tips for choosing the best office location for your business. Alternatively, for a comprehensive take on everything to consider when looking for office space, see our in-depth guide to finding office space for small or growing companies. The guide also includes insights from seasoned professionals and can serve as a helpful resource for growing companies, no matter their current size.
Are you looking to lease office space in the vicinity of your current location or in a particular neighborhood of Riverhead? Using the interactive map, you can easily navigate to your preferred location and customize your search area around a specific point of interest. Select “Radius” from the Search Mode options menu, click on the map to set your search reference point, and expand the radius to select your desired search area. Browse available listings to find the best office space that meets your location, as well as other business needs.

Riverhead, NY Office Inventory Breakdown

There are a number of factors that make a city attractive for businesses to relocate or expand, as well as for investors to enhance their portfolios through local acquisitions. Among the most important factors to consider are the size and quality of the local office market, which is an essential component of the local economy.

Total Office Space in Riverhead: 190,387 Sq. Ft.

In 2025 the Riverhead office market encompassed 190,387 square feet of space.

Riverhead Office Market Breakdown by Building Size
Building Size Range	Total Square Feet	Share of Total Office
100k to 500k Sq. Ft.	103,263 Sq. Ft.	54.24%

Riverhead Office Market Breakdown by Building Quality Rating
Class	Total Square Feet	Share of Total Office
Class B	190,387 Sq. Ft.	100%

Data was provided by CommercialEdge, refers to properties larger than 50,000 square feet.

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Riverhead, NY Office Spaces for Rent

East Main Office Center

East End Commons

8 E Main St

940 Roanoke Ave

Riverhead Plaza

20 Riverleigh Ave

Tiana Plaza Shopping Center

240 W Montauk Hwy

Building 2

315 Westphalia Rd

Enterprise Park - 221 David Court

Frequently Asked Questions

Riverhead, NY Office Inventory Breakdown

Total Office Space in Riverhead: 190,387 Sq. Ft.

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