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Mark Andrew Trenka

Mark Andrew Trenka
Real Estate Agent (Responsible Broker (Employing))
Denver CO

Responsible Broker (Employing) (CO: 40039968)

22 years experience

REALTOR® 10 Active Listings Serves Denver County, CO
View on Realtor.com

Contact Information

Brokerage
Century 21 Trenka Real Estate

Office Website
Office Address
1010 15th St
Denver, CO  80202-2345
(Denver County)
Office Phone
303-629-1000
Office Fax
303-629-8641
Mobile
303-629-1000
Email
m***@****************.com
Show Email for $5

Service Areas

Cherry Hills Village: CO Greenwood Village: CO Cherry Creek: CO Centennial: CO Meridian: CO Inverness: CO Lone Tree: CO Dove Valley: CO Castle Pines: CO Stonegate: CO Grand View Estates: CO Parker: CO The Pinery: CO Denver: CO Englewood: CO

About Mark Trenka

Mark Trenka serves as the broker and owner of CENTURY 21 Trenka Real Estate. As a second-generation REALTOR®, he initially built his career in the automotive sector and mortgage lending before embracing the family business. Under his leadership, the firm has successfully managed over 1,000 transactions, amassing more than $230 million in sales. Remarkably, Mark earned CENTURION® recognition in his first full year with CENTURY 21®.

In addition to his commitment to his company and clients, Mark is actively involved in real estate leadership across Colorado. He currently holds the position of Director at the National Association of REALTORS® and is a member of the MLS Issues and Policy Committee. His past roles include serving as the 2017 Chair of the Colorado Association of REALTORS®, Chair of the Board of Directors for REcolorado from 2013 to 2015, and Chair of the Legislative Policy Committee for the Colorado Association of REALTORS® during the same period. He also served as the President of the Denver Board of REALTORS® (DBR) from 2009 to 2010.

Mark's peers have recognized his contributions and achievements, awarding him the title of Broker/Manager of the Year by the Denver Board of REALTORS® in 2010 and REALTOR® of the Year in 2011. His accolades include three DBR President’s Distinguished Service Awards and nine Office Volume Production awards, along with a Platinum rating for customer service from QSC (Quality Service Certification).

Outside of his professional endeavors, Mark is an avid fan of the Colorado Rockies and enjoys skiing and golfing. He also appreciates attending baseball games and collecting memorabilia. Residing in the Walnut Hills neighborhood of metro Denver, he has actively participated in the local community, serving multiple terms on the Civic Association’s board of directors.

Denver County, CO Real Estate Market Analysis (Single Family Homes)

$1,020,980
Avg. Listing Price
From Mark's portfolio
3.6 / 2.8
Avg. Beds/Baths
Typical property size
2,501 sf
Avg. Square Footage
Interior living space
1882
Active Listings
Current inventory

Denver County's real estate market stands as one of Colorado's most dynamic and concentrated markets, encompassing the heart of the Mile High City and its immediate urban core. With 8,933 actively licensed real estate agents operating within the county boundaries, the market represents an incredibly dense concentration of real estate professionals serving a relatively compact geographic area that includes Denver proper and its closest neighboring communities.

What makes Denver County particularly fascinating is the sheer intensity of agent activity relative to its size. All 8,933 licensed agents maintain email contact information, reflecting a tech-savvy professional community that embraces digital communication and modern marketing approaches. This level of connectivity speaks to the competitive nature of the market and the sophisticated tools agents use to stay ahead in one of the West's most sought-after real estate environments.

Major Denver County, Colorado Real Estate Markets

The Denver County market centers around several distinct urban neighborhoods and districts, each with unique characteristics and price points. Downtown Denver drives much of the high-end condominium and loft market, while areas like Capitol Hill, Highland, and the emerging River North Art District (RiNo) attract younger professionals seeking walkable communities with vibrant cultural scenes. These urban core markets have experienced tremendous appreciation over the past decade, transforming formerly industrial areas into trendy residential enclaves.

Beyond the downtown core, established neighborhoods like Park Hill, Washington Park, and Stapleton represent family-oriented markets with a mix of historic homes and new construction. The former Stapleton airport site, now a master-planned community, has become one of Denver's largest residential developments, attracting families and professionals who want modern amenities while remaining within Denver County limits. Each of these markets requires specialized knowledge that local agents possess.

Market Dynamics and Geographic Complexity

Denver County's real estate market operates within a unique geographic constraint that creates intense competition for limited inventory. Unlike surrounding counties that can expand outward, Denver County's boundaries are fixed, creating a supply-constrained environment where established neighborhoods undergo constant revitalization and redevelopment. This dynamic has led to rapid price appreciation and a market where agents must understand micro-neighborhood trends and zoning implications.

The county's market also reflects broader demographic shifts, with millennials and young professionals driving demand for urban living options while empty nesters seek luxury condominiums and townhomes in walkable areas. This generational convergence creates multiple market segments operating simultaneously, requiring agents to specialize in different buyer profiles and property types while navigating Denver's complex development regulations and historic preservation requirements.

Why Businesses Need Denver County, Colorado Agent Contact Data

Companies serving the real estate industry find Denver County's concentrated agent population invaluable for targeted marketing campaigns and business development initiatives. With nearly 9,000 agents operating in a defined geographic area, businesses can achieve remarkable efficiency in reaching decision-makers who influence significant real estate transactions. Mortgage lenders, insurance providers, home improvement companies, and real estate technology firms particularly benefit from direct access to this professional network.

The complete email coverage among Denver County's licensed agents enables sophisticated digital marketing strategies and personalized outreach campaigns. Service providers can segment their communications based on agent specializations, target high-volume producers, or focus on specific neighborhoods where their services align with market needs, maximizing marketing ROI while building meaningful professional relationships in Colorado's most important urban real estate market.

Current Property Listings

As of 2/17/2026, Mark Trenka has 10 properties for sale in Denver and surrounding areas.

$212,000

Listed 2026-02-14

3465 S Poplar St Apt 306
Denver, CO  80224

Beds: 1.0
Baths: 1.0
Sq Ft: 811
Condos Map
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$345,000

Listed 2025-11-05

1020 15th St Apt 21L
Denver, CO  80202

Beds: 2.0
Baths: 2.0
Sq Ft: 992
Condos Map
View Full Details

$229,000

Listed 2025-12-27

1020 15th St Apt 13K
Denver, CO  80202

Beds: 1.0
Baths: 1.0
Sq Ft: 632
Condos Map
View Full Details

$995,000

Listed 2026-02-13

4037 E 17th Avenue Pkwy
Denver, CO  80220

Beds: 4.0
Baths: 3.0
Sq Ft: 3,561
Lot: 4,960 sf
Single Family Map
View Full Details

$675,000

Listed 2026-01-10

1220 N Logan St
Denver, CO  80203

Beds: 3.0
Baths: 3.0
Sq Ft: 1,873
Lot: 2,095 sf
Townhomes Map
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$260,000

Listed 2026-01-11

1020 15th St Apt 9N
Denver, CO  80202

Beds: 1.0
Baths: 1.0
Sq Ft: 778
Condos Map
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$1,200,000

Listed 2026-01-20

891 14th St Unit 1801
Denver, CO  80202

Beds: 2.0
Baths: 2.5
Sq Ft: 1,639
Condos Map
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$1,025,000

Listed 2026-01-14

1020 15th St Apt 42C
Denver, CO  80202

Beds: 3.0
Baths: 3.0
Sq Ft: 2,144
Condos Map
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$195,000

Listed 2026-01-24

1020 15th St Apt 25B
Denver, CO  80202

Beds: 0.0
Baths: 1.0
Sq Ft: 484
Condos Map
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$275,000

Listed 2025-09-12

1020 15th St Apt 22A
Denver, CO  80202

Beds: 1.0
Baths: 1.0
Sq Ft: 816
Condos Map
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Current Property Rentals

As of 2/17/2026, Mark Trenka has the following rental properties available in Denver and surrounding areas.

$2,200

Listed 2026-01-16

1020 15th St Apt 31J
Denver, CO  80202

Beds: 2.0
Baths: 2.0
Sq Ft: 992
Condos Map
View Full Details

$2,800

Listed 2026-02-16

1020 15th St Apt 202
Denver, CO  80202

Beds: 2.0
Baths: 2.0
Sq Ft: 1,412
Condos Map
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$1,450

Listed 2026-01-03

1020 15th St Apt 17M
Denver, CO  80202

Beds: 0.0
Baths: 1.0
Sq Ft: 498
Condos Map
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$2,350

Listed 2025-12-11

1020 15th St Apt 35L
Denver, CO  80202

Beds: 2.0
Baths: 2.0
Sq Ft: 1,002
Condos Map
View Full Details