Thornton, CO Office Spaces for Rent

Find the best Thornton, CO office space among 10 for rent listings currently on the market.

9461 Huron St

9461 Huron St, Thornton, CO
Property Type

Office
For Lease

$22.00/SF/YR
1 space available / 2,837 SF
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Horizon Terrace

9351 Grant Street, Thornton, CO
Property Type

Office
For Lease Contact for pricing

3 spaces available / 1,579 - 2,771 SF
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2200 East 104th Avenue

2200 East 104th Avenue, Thornton, Denver, CO
Property Type

Office
For Lease

$855.00 - $3,445.00/MO
3 spaces available / 581 - 2,659 SF
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Humanly on Grant
Humanly
9351 Grant Street #480, Thornton, CO
Property Type

Private Offices
For Lease

From $650/month
Space for 1 to 4 people
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Thornton Healthcare Plaza

9441 Huron St, Thornton, Denver, CO
Property Type

Office
For Lease Contact for pricing

1 space available / 8,828 SF
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2090 East 104th Avenue

2090 East 104th Avenue, Thornton, CO
Property Type

Office
For Lease

$1,275.00/MO
1 space available / 1,157 SF
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Trinity Medical Plaza

12880 Colorado Blvd, Thornton, CO
Property Type

Office
For Lease

$27.00/SF/YR
1 space available / 1,998 SF
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8933 N. Washington St.

8933 N. Washington St. Thornton, Thornton, CO
Property Type

Office
For Lease

$625.00/MO
1 space available / 403 SF
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12412 York Street
York Street Depot
12412 York Street, Thornton, CO
Property Type

Private Offices
For Lease

From $900/month
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10001 Washington Street

10001 Washington Street, Thornton, CO
Property Type

Office
For Lease Contact for pricing

1 space available / 1,427 SF
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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.

The minimum rental rate for office space in Thornton is $15.55 per square foot. Among listings of office space currently available for lease in Thornton, the maximum rental rate is $27 per square foot.
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 Thornton, as the local office market offers a wide range of options. Office spaces currently on the market go up to as much as 8,828 square feet in size for an individual listing.
However, there is a variety of differently sized opportunities below that maximum. For your consideration, the median size of an office space for lease in Thornton is 2,302 square feet, and the average office space size here is 2,599 square feet.
You can find 10 office listing(s) for lease in Thornton, which add up to a total of 25,986 square feet. Availability on the market includes a variety of office use types, such as General Office, Medical Office.

The most common office use type currently available for lease in Thornton is General Office, which is offered in 6 or 60.00% of listings. The second-most frequent office use type listed here is Medical Office, which account for 4 or 40.00% of office space currently available.
You can search 1 office sublease listing(s) in Thornton, which amount to a total of 8,828 square feet. Sublease opportunities on the market include Medical Office, 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 Thornton office market incorporates a mix of properties of various ages, ratings, construction grades, and other quality indicators. Roughly 30% of total office space listings in the city are in properties rated Class A. Class B office space accounts for 30% of spaces listed on the leasing market.

Buildings completed in and since the year 2000 account for 25% of office properties in the city and incorporate a total of 38,208 square feet.
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 Thornton? 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.

Thornton, CO 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 Thornton: 1,149,045 Sq. Ft.

In 2025 the Thornton office market encompassed 1,149,045 square feet of space.
Class A office space makes up a 13.69% share of Thornton office inventory, while Class B office assets represent roughly 40.27% of the market total.

Thornton Office Market Breakdown by Building Size
Building Size Range	Total Square Feet	Share of Total Office
50k to 100k Sq. Ft.	220,490 Sq. Ft.	19.19%
100k to 500k Sq. Ft.	710,108 Sq. Ft.	61.8%

Thornton Office Market Breakdown by Building Quality Rating
Class	Total Square Feet	Share of Total Office
Class A	157,292 Sq. Ft.	13.69%
Class B	462,738 Sq. Ft.	40.27%
Class C	529,015 Sq. Ft.	46.04%

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

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Thornton, CO Office Spaces for Rent

9461 Huron St

Horizon Terrace

2200 East 104th Avenue

Humanly on Grant

Thornton Healthcare Plaza

2090 East 104th Avenue

Trinity Medical Plaza

8933 N. Washington St.

12412 York Street

10001 Washington Street

Frequently Asked Questions

Thornton, CO Office Inventory Breakdown

Total Office Space in Thornton: 1,149,045 Sq. Ft.

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