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Distinctive spaces that define culture.

Make it

stand out.

We Turn Vision into Icons.

Our focus is on identifying and acquiring commercial real estate properties with growth potential. The portfolio is built on strategic investments designed to generate long-term value and steady returns. We personally manage each step of the investment process, from initial due diligence to closing, ensuring a hands-on approach to every asset.

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We partner with visionaries, investors, and innovators to bring bold ideas to life

GSK PROPERTIES

Our
Investment

Strategy.

We buy and operate quality commercial properties in strong, desirable areas. Our strategy centers on value-add buildings where renovations, improved tenant mixes, and better management can drive increased returns.

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GSK HOSPITALITY

Experiences That

Stay With You.

Our hospitality ventures are more than spaces — they’re immersive experiences. We collaborate with visionary partners to deliver distinctive restaurants, bars, and lifestyle concepts that keep people coming back.

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Who you work with

Our team

Meet the team behind our success

All team members
George Tselos
Founder & CEO

George’s deep knowledge of real estate and hospitality, paired with his unwavering passion for GSK’s growth and integrity, drives the company’s vision and long-term success.

Stefanie Tselos
CSO

Bringing over 15 years of experience in relationship building and client growth, backed by a B.S. in Psychology, giving her a unique ability to connect with people and drive meaningful, lasting partnerships.

John Ryan
CMO

With 25 years of experience in marketing, advertising, and creative strategy, with a passion for leveraging AI and performance-driven innovation to elevate brand impact and growth.

Katrina Ryan
COO

10 years of leading Fortune 500 operations teams, combining strategic efficiency with a people-first approach to drive organizational excellence and scalable growth.

FAQs

Frequently Asked Questions

We are often asked...

What services do you offer?

Our agency specializes in a comprehensive range of services including social media strategy development, content creation and curation, community management, paid social advertising, analytics and reporting, and influencer partnerships. We tailor our services to meet the unique needs of each client, ensuring a customized approach to boost your online presence.

How do you measure success in social media marketing?

Success in social media marketing is measured through a variety of metrics that align with your business goals. These can include an increase in followers, engagement rates (likes, comments, shares), website traffic referred from social media platforms, lead generation, and conversion rates. We also focus on more nuanced metrics such as audience sentiment and brand awareness. Our team provides detailed reports to track these metrics and assess the ROI of your social media campaigns.

Can you handle all social media platforms?

Yes, our team is proficient in managing a wide array of social media platforms including but not limited to Facebook, Instagram, Twitter, LinkedIn, Pinterest, and TikTok. We stay up-to-date with the latest trends and best practices for each platform to ensure your content resonates with your target audience and achieves maximum impact.

What makes your agency different from others?

What sets us apart is our personalized approach and commitment to understanding your brand's unique voice and objectives. Our agency combines creativity with data-driven strategies to craft compelling content that engages your target audience. We prioritize transparency and communication, keeping you informed and involved at every step of the process. Additionally, our team continuously adapts to the ever-changing social media landscape to keep your strategy ahead of the curve.

How do we get started?

Getting started is easy! Simply reach out to us through our website contact form, email, or by giving us a call. We'll schedule an initial consultation to discuss your business goals, target audience, and current social media efforts. From there, we'll propose a customized strategy tailored to your needs. Once you're ready to proceed, we'll kick off your campaign and start making social media work for you.

Still have questions?

Contact one of our experts to find out how we can help your business today.

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Press & News

GSK In The News

From new hospitality concepts to major property announcements, our news section highlights the milestones that define our continued growth and innovation.

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2025 U.S. Hospitality and Restaurant‑Driven CRE: Investment Confidence amid Shifting Fundamentals

National hospitality investment surges in 2025 as restaurants anchor new CRE projects, showing confidence in hospitality‑integrated developments.
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“1Fifteen” in Roseland Signals Suburban Chicago Shift Toward Mixed‑Use + Food & Retail Anchors

The new 58-unit, $48.3 million mixed-use development in Chicago’s Roseland neighbourhood will include 23,000 sq ft of ground-floor commercial space expected to accommodate a restaurant and grocery store — highlighting how hospitality uses are central to suburban mixed-use CRE in the region. 
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Beyond the Core: U.S. Mixed‑Use Developments Leaning into Restaurant Anchors and Lifestyle Retail

Across the U.S., mixed-use developments are increasingly integrating restaurant and lifestyle-retail elements as key value-drivers, especially outside traditional downtown cores — offering new opportunities for hospitality property managers.
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Pullman Gateway’s Restaurant Anchor Signals Commercial Revival in Chicago’s South Side

The new 8-acre Pullman Gateway development in Chicago’s Pullman neighbourhood brings in Chick‑fil‑A as its anchor tenant and sets the tone for further restaurant, retail and mixed-use growth in a historically underserved area. 
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Restaurant Chain Expansion Drives CRE Opportunities: Non‑Traditional Markets & Hospitality Saturation

Restaurant Chain Expansion Drives CRE Opportunities: Non-Traditional Markets, Ground-Floor Leases, and Hospitality Saturation Summary: Restaurant chains are increasingly targeting non-traditional markets, ground-floor mixed-use leases and integrated retail-hospitality developments — generating new commercial-real-estate opportunities where hospitality and CRE converge.
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Fulton Market’s “Flora” Tower Blends Luxury Living with High‑End Dining

In Chicago’s Fulton Market district, the new 368-unit luxury residential tower “Flora” includes a lease with the Day Off Group (led by chef Joe Flamm) for a signature dining concept — highlighting how hospitality and restaurants are embedding into broader CRE development.
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Testimonials

What our clients say

Don't just take our word for it, see what the awesome people we work with have to say.

"We hosted my 40th birthday party at Emerson’s Ale House, and it couldn’t have been more perfect! The staff went above and beyond to make everything seamless — from the custom cocktail menu to the setup and service. George and his team made us feel like family, and every guest was raving about the food and atmosphere. It was the kind of night you never forget — warm, lively, and effortless. I can’t recommend them enough!"

Christina M.

Event Guest

"As a tenant in one of GSK’s commercial properties, I’ve been consistently impressed by their professionalism and responsiveness. From maintenance to lease updates, the attention to detail is unmatched. You can tell they genuinely care about their tenants and the success of each business. It’s rare to find management this hands-on and reliable."

Anthony R.

Tenant – Chicago

"We’ve been tenants under GSK Management for over three years, and it’s been a fantastic experience. The team is proactive, approachable, and always willing to go the extra mile to ensure everything runs smoothly. You don’t feel like just another lease — you feel like part of a partnership. Their consistency and communication make all the difference."

Samantha & James L

Retail Tenants – Suburban Chicago

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GSK Management
200 E. Evergreen Ave, Suite 102
Mount Prospect, IL 60056
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