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Boulder Open Space Conservancy

Boulder Open Space Conservancy is a non-profit organization that partners with the City of Boulder Open Space and Mountain Parks department to promote and enhance the ecological resilience …

Environment Boulder, CO EIN 821716267 · IRS Reg 82-1716267 · IRS Sign up to see website
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89
Integrity Assessment
Strong transparency
89/100 · methodology

About Boulder Open Space Conservancy

In 2022 BOSC fundraised and contributed $48,000 in 2023 to City of Boulder OSMP for Mt. Sanitas trail maintenance and improvements and Junior Rangers.

Founded
Headquarters
Boulder, CO
Foundation type
Publicly-supported charity (509(a)(2))
NTEE code
C34
IRS subsection
501(c)(03)
Ruling date

Verified certifications

Confirmed against the issuing authority - not self-reported.

IRS Tax-Deductible since 2017

Mission

Boulder Open Space Conservancy is a non-profit organization that partners with the City of Boulder Open Space and Mountain Parks department to promote and enhance the ecological resilience of our public lands to climate change through sponsorship of conservation projects and community education for the benefit of all current and future generations of Boulder citizens and visitors.

Focus areas & reach

· What they work on and where
🌿 Environment · NTEE C34
Cause tags

How it stacks up against peers

· vs. 8 similar environment in United States
Program spending This charity: 86%
Peer average: 91%
Integrity Assessment This charity: 89
Peer average: 91

Red flags

· All clear
IRS revocation history
Open investigations
Governance scandals
Related-party deals
Excessive exec comp

Where every $1 goes

$0.86
Program expenses$0.86 ($142,437)
86% to programs beats the Charity Navigator "highly efficient" threshold (75%).

Common questions

· Auto-generated from filings + methodology

Boulder Open Space Conservancy is a registered environment nonprofit based in Boulder, CO, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 2017 and has been operating for 9 years. Its EIN is 821716267. It has a GiveRadar Integrity Assessment of 89/100 (Strong transparency), indicating well-documented governance, financials, and contact details. The organization reports $186K in annual revenue. 24 officers and directors are publicly disclosed. No red flags have been detected.

Boulder Open Space Conservancy has a GiveRadar Integrity Assessment of 89/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 89 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. The charity allocates 86% of expenses to programs, which contributes positively to its score. For comparison, the average integrity assessment for environment charities in United States is 91/100.

Boulder Open Space Conservancy is located in Boulder, CO, United States. The organization was established in 2017 and has been active for 9 years.

Based on official tax filings, Boulder Open Space Conservancy has $186K in annual revenue. It allocates 86% of expenses to programs and services. This is in line with the average of 91% for environment charities in United States. Its revenue is below the peer average of $2M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Boulder Open Space Conservancy is classified as a Environment organization, registered in United States. It operates as a Publicly-supported charity (509(a)(2)). It has $186K in annual revenue. The organization has 24 disclosed officers and directors.

No red flags have been detected for Boulder Open Space Conservancy. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

Boulder Open Space Conservancy has a GiveRadar Integrity Assessment of 89/100 (Strong transparency) and no red flags have been detected, which suggests it is a well-documented organization. It is regulated by the IRS. 86% of expenses go to programs. The peer average is 91%. You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research purposes and does not endorse any organization. Always do your own due diligence.

In 2022 BOSC fundraised and contributed $48,000 in 2023 to City of Boulder OSMP for Mt. Sanitas trail maintenance and improvements and Junior Rangers. Boulder Open Space Conservancy is classified as a environment organization registered in United States. The organization was founded in 2017.

Among environment charities registered in United States: Boulder Open Space Conservancy's GiveRadar Integrity Assessment of 89/100 is in line with the peer average of 91/100. It allocates 86% of expenses to programs, in line with the peer average of 91%. Its annual revenue of $186K is below the peer average of $2M.

Yes, donations to Boulder Open Space Conservancy are generally tax-deductible in the United States. Boulder Open Space Conservancy is a 501(c)(3) tax-exempt organization. Its EIN is 821716267, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.

Verified against 5 official sources, last refreshed .

Annual revenue
$100K-$1M
86% to programs
Source: IRS 990 (FY2025) why this matters
Unlock exact figures

Filing history

5 years on file from IRS 990 (FY2025): revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: FY2025, FY2024, FY2023, FY2022, FY2021.
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Taxes

Tax-deductibility for donors

Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Leadership

AL
Alyson Duffey
Executive Director

Officers & trustees (7)

Source: Public filings

AL
Alyson D•••••
Executive Director
BO
Bob K•••••
Treasurer
DI
Diane M•••••
President
ER
Eric W•••••••
Vice-President
IN
Inga J••••••
Board Member
PH
Phillip T•••••
Board Member
ZU
Zuza B•••••
Board Member
Full names, contact details & compensation

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Latest news

From global news sources

9 articles found

From global news sources

Sentiment

Neutral

Activity timeline

Filings and press mentions, merged

2025 Year in Review for Open Space and Mountain Parks - City of Boulder (.gov)
Jan 2026
bouldercolorado.gov
Form filed
$0.2M revenue
FY2025
IRS_990
Boulder’s Mount Sanitas to get major trail improvements in multi-year project - Colorado Hometown Weekly
Jul 2025
www.coloradohometownweekly.com
Project to repair Boulder's popular Mount Sanitas trail system begins - Denver7
Jun 2025
www.denver7.com
City Begins Significant Trail Improvements on Mount Sanitas - City of Boulder (.gov)
Jun 2025
bouldercolorado.gov
City Conducting Extensive Trail and Trailhead Work - City of Boulder (.gov)
May 2025
bouldercolorado.gov
City Webpage, Web Map Highlight Significant 2025 Open Space Projects - City of Boulder (.gov)
Apr 2025
bouldercolorado.gov
Form filed
$0.2M revenue
FY2024
IRS_990
City Receives $1.1 Million Grant for Trail Improvements on Mount Sanitas - City of Boulder (.gov)
May 2024
bouldercolorado.gov
Form filed
$0.1M revenue
FY2023
IRS_990
Form filed
$0.1M revenue
FY2022
IRS_990
City to Conduct Helicopter Flights for Mount Sanitas Trail Repairs - City of Boulder (.gov)
Oct 2022
bouldercolorado.gov
Form filed
$0.0M revenue
FY2021
IRS_990
OSMP Sponsorship Opportunities - City of Boulder (.gov)
Jul 2021
bouldercolorado.gov

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Peer charities

Other environment in United States, by integrity assessment

Charity Score Revenue Program %
Boulder Open Space Conservancy This page 89 $186,389 86%
Baduwat Watershed Council 93 $426,600 100%
Birds of Prey Foundation 93 $396,950 82%
Keep Nassau Beautiful Inc 93 $296,240 81%
California Irrigation Institute Inc 90 $108,053 100%
White Clay Watershed Association 90 $388,718 84%
Trout Unlimited 90 $771,789 96%
Association of New Jersey Recyclers Inc 90 $292,455 88%
Rochester Ecology Partners Inc 90 $444,787 94%

Sources and verification

Refreshed

Registration and legal identity
Internal Revenue Service (IRS) - Tax Exempt Organization Search
Financial filings
IRS Form 990 filings - Fiscal year 2025 most recent on file.
Officers and trustees
Internal Revenue Service (IRS) - Tax Exempt Organization Search - 24 disclosed in the public registry.
News and media coverage
GDELT Project + Google News
Supplementary verification
Charity Navigator

Data freshness

Last updated
May 27, 2026
Profile completeness
85%

What we don't know

Honest gaps - our score reflects transparency, not impact

Programs & projects
No named programs listed by the charity
Operating reach
Countries where programs run not specified

Methodology

GiveRadar combines public registry filings, ProPublica Nonprofit Explorer, Charity Navigator, GuideStar, and news archives into a single 0-100 integrity assessment. We don't take a cut of any donation, ever.

Read full methodology

Quick facts about Boulder Open Space Conservancy

What is Boulder Open Space Conservancy?
Boulder Open Space Conservancy is a environment publicly-supported charity (509(a)(2)) based in Boulder, United States. In 2022 BOSC fundraised and contributed $48,000 in 2023 to City of Boulder OSMP for Mt. Sanitas trail maintenance and improvements and Junior Rangers.
When was Boulder Open Space Conservancy founded?
Boulder Open Space Conservancy was founded in 2017.
Who leads Boulder Open Space Conservancy?
Alyson Duffey serves as Executive Director.
Where is Boulder Open Space Conservancy located?
Headquartered in Boulder, United States.
What is Boulder Open Space Conservancy's annual budget?
Annual revenue for fiscal year 2025 is approximately $100K-$1M. 86% of expenses go to program services.
Is Boulder Open Space Conservancy trustworthy?
Boulder Open Space Conservancy has a GiveRadar Integrity Assessment of 89 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Boulder Open Space Conservancy's registration number?
IRS EIN: 821716267. Registration: 82-1716267 (United States).
What is Boulder Open Space Conservancy's website?
http://bosc.org