About MaisonCo
Introducing MaisonCo, the stunning new addition to the downtown Manhattan skyline. A perfect blend of breathtaking architecture designed, with awe-inspiring interiors envisioned
We recognise that the ongoing support of an engaged community is integral to the future of B2B media, meaning that we’re focused on delivering an audience inspired approach to knowledge generation and intelligence provision. Through the Building family of products and services, our community reach now extends across digital, print and live platforms, and as a result we’re more than just a media provider; we’re an influential hub for world-class thought leadership and innovation.


Our Story
We recognise that the ongoing support of an engaged community is integral to the future of B2B media, meaning that we’re focused on delivering an audience inspired approach to knowledge generation and intelligence provision. Through the Building family of products and services, our community reach now extends across digital, print and live platforms, and as a result we’re more than just a media provider; we’re an influential hub for world-class thought leadership and innovation.
Our Values
In-House Made
From the vibrant ground level plaza to the terraces, private gardens, balconies and lush rooftop work spaces, Costix
Our Customers Mean the World
From the vibrant ground level plaza to the terraces, private gardens, balconies and lush rooftop work spaces, Costix offers an array of amenities …


Strategy, Mission, Vision
Do you want to be even more successful? Learn to love learning and growth. The more effort you put into improving your skills, the bigger the payoff you will get. Realize that things will be hard at first, but the rewards will be worth it. Many of us have to be reminded that almost everything worthwhile in our lives is hard at first.
Learning to walk was hard at first, but gradually we learned and now it is effortless. The same holds true for our more advanced
our Team

Sirena Sosa
01995089
Senior Broker & President
Sirena Sosa is a licensed Senior Broker at The Whitlatch Group and serves as the Managing Director for her team, The W Group. A Visalia Native, she began her commercial real estate career in the heart of the Central Valley over the last decade. She expanded her team to Southern California in 2023, focusing on development projects.
Sirena’s focus is on Helping Land Developers and Industrial Tenants secure sites in Central and Southern California. Her knowledge of agricultural land in 2014 led her to development projects, including energy projects, housing development, industrial development, and public infrastructure projects.
Sirena provides value to clients through strong personal relationships and a network of developers, contractors, and business professionals, enabling her to achieve results while serving as a primary resource to her clients.
Sirena has developed her reputation for her tenacious and graceful ability to both lead and be a part of progressive and forward-thinking projects. Sirena is diverse, upbeat, and diligent, and enjoys bringing visions to life for her clients.
Before joining The Whitlatch Group, Sirena obtained her Real Estate Brokers license and completed pre-law studies at Fresno City College. She studied Real Estate Development with an emphasis on Sustainable Built Environments at the University of Arizona. Sirena is committed to leading and educating the commercial real estate industry, doing so by bringing education to our region.
Sirena, alongside her mentor Bill Whitlatch, launched the CCIM Central Valley Chapter, bringing the first CCIM Industry course in history to our region in 2023. Always one to lead with an agile approach, Sirena also helped create the Fresno CREW (Commercial Real Estate Women) Chapter and serves on the Board of Directors.
Sirena is a speaker for commercial real estate, teaching agents the primary difference between residential and commercial real estate, land Development, and shares her story of breaking through a male-dominated industry.
Recent projects/assignments:
- Relocation of multiple International companies to California
- Shell Oil, acquisition and leasing of Battery Storage sites throughout the Central Valley
- Cultivate, leasing of Solar Farms throughout Southern California
- Development land sites along the Highway 99 freeway
- Acquisition of real estate for the California High Speed Rail
- Federally funded acquisition for transportation Projects throughout the Central Coast, Southern California, and the Central Valley.
- Statewide Right of Way Acquisition Sites
Industry Memberships:
Certified Commercial Investment Member (CCIM)
International Right of Way (IRWA)
Central Valley Women for Agriculture
Commercial Real Estate Women (CREW)
Women in Construction
Awards:
2025, Los Angeles Business Journal: Commercial Real Estate Brokers of Influence
2024, Top 87 Most Influential Commercial Real Estate Women nationwide
2012, Award from the Fresno Police Department for Community Recognition
Email: Sirena@thewgroupcre.com
Phone: (559) 960-7429 and/or (310) 999-4188

Narek Tamazyan
02213928
Investment Associate, Leasing and Sale
Narek Tamazyan is a licensed real estate agent who launched his career in 2023; he has built a reputation for his detail-oriented approach and unwavering commitment to serving his clients’ best interests. With a primary focus on commercial properties and investment opportunities, Narek works diligently to connect buyers, sellers, and investors with the right opportunities to maximize their success. Whether guiding clients through complex transactions or identifying lucrative investment options, he is dedicated to delivering exceptional service and results.
Email: Narek@thewgroupcre.com
Phone number: (559) 375-3199

Melanie Samrech
02222347
Investment Associate
Born and raised in Fresno. Melanie has previous experience in sales, working in multifamily investments throughout the Central Valley. Melanie has graduated from Fresno State, majoring in Business Administration with an emphasis in Real Estate & Urban Land Economics. Melanie enjoys Muay Thai and Jiu Jitsu in her spare time for fun.
Languages: Khmer
Email: Melanie@thewgroupcre.com
Phone: (559) 360-1151

Jeanette Welton
02032193
Investment Associate
Born and raised in Southern California, Jeanette relocated to the Central Valley in 2014, where she has continued to grow both personally and professionally. She holds a Bachelor of Science degree in Business Management with a concentration in Marketing, which has laid the foundation for a dynamic and versatile career.
Jeanette brings over 13 years of experience in management and operations, along with more than a decade of expertise in training and development. Her background includes several years in property management, with a specialization in multifamily communities, as well as recent experience in bookkeeping. Throughout her career, Jeanette has built a strong reputation for leadership, strategic thinking, and commitment to excellence.
After stepping away from the professional world to dedicate time to raising her family as a stay-at-home mom, Jeanette re-entered the workforce with renewed purpose and focus. In June 2025, she earned her California Real Estate License and proudly joined The W Group.
Now embarking on an exciting new chapter in commercial real estate, Jeanette is eager to gain experience and serve clients with integrity, knowledge, and dedication. Her goal is to assist clients in all aspects of their business and investment ventures—offering a seamless and exceptional experience whether they are building, leasing, buying, or selling commercial properties.
Languages also Fluent in: Spanish
Email: jeanette@thewgroupcre.com
Phone: (559) 907-8172
Memberships: CREW (Commercial Real Estate Women)

Aniyah Webster
Executive Assistant
As Executive Assistant to Senior Broker and President, Sirena Sosa, Aniyah provides essential support in managing the operations, organization, and communication within The W Group International, a leading commercial real estate brokerage and development firm.
She plays a key role in coordinating client meetings, maintaining project workflows, and streamlining daily operations to keep transactions and development projects running efficiently. Through her attention to detail and proactive communication, Aniyah ensures that every part of the business, from scheduling and client coordination to document management and reporting, operates smoothly and professionally.
Aniyah is known for her reliability, organization, and commitment to excellence. Her work allows the executive team to stay focused on growth, client success, and advancing The W Group’s mission to deliver exceptional service and results throughout Central and Southern California.
Email: aniyah@thewgroupcre.com
Phone number: (559) 613-6197

Connor Flores
JV Property Management
You may be a skillful, effective employer but if you don’t trust your personnel and the opposite, then the chances of
Caroline Vaughn
Project Manager
You may be a skillful, effective employer but if you don’t trust your personnel and the opposite, then the chances of


Connor Flores
JV Property Management
You may be a skillful, effective employer but if you don’t trust your personnel and the opposite, then the chances of