Headquartered in Los Angeles with offices in New York, Aspen and Miami.  Plus Development is a real estate development management firm specializing in design oriented projects in the residential, multi-family, commercial / hospitality, creative office and retail sectors from site acquisition through to ownership and sale. The company was formed based on a passion for real estate and the desire to collaborate with the top firms and individuals in our industry.

Plus Development specializes in complex development and is uniquely positioned to understand the distinctive factors associated with each type of project.

We have developed our business approach to successfully manage projects for clients and investors that are based internationally/ nationally, and act on their behalf on all aspects of developing a project.

Plus Development brings to each individual project multi-sector expertise and a tailored and methodical approach spanning site selection, due diligence, underwriting, highest-and-best use, design, entitlements and permit strategies right through to team selection, bidding, and overall management of the design and construction process and the sale or management of the asset. 

Plus Design Studio is a full service design firm based in Los Angeles. With a focus on custom residential homes and commercial office we offer a range of services from concept design, schematic design, construction administration to interior architecture and furniture design.

We are keen on simplicity and believe that a project is best executed when all of its elements can be reduced to its purest form. Passionate for materials, light and space we design each project to match a narrative inspired by its geography and intended use.

  • Residential
  • Commercial
  • Interior Design
  • Feasibility & Concept Design Study
  • Tenant Improvement 
  • Hospitality
  • FF&E

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Specializing in Residential, Commercial and Land, Plus Real Estate Group was formed to bring a collaborative approach to acquiring and selling assets. A team assembled with a diverse background focused on due diligence, highest-and-best use analysis, global marketing and record breaking sales. 

Experience ranges from mixed-use to large-scale commercial to luxury estate sales. The scope of expertise demonstrates the most discerning level of comprehensive services tailored to the full spectrum of real estate brokerage services. A history of record-breaking sales and confidential off-market transactions, Plus Real Estate Group offers unparalleled representation.

  • Commercial
  • Residential
  • Land
  • Mixed Use
  • Hospitality
  • Office

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Tyrone McKillen

Principal / Founder

Since forming Plus Development Tyrone has helped create a diverse multifaceted development company focused on creating a new benchmark in service for developers and investors by centralizing the design, financing, planning, development, management and selling process into one team. This centralized approach to development allows for the highest level of efficiency that helps curate the most sophisticated and targeted designs and programming to each specific project audience. 

 Tyrone has almost 20 years of international experience working in a diverse background in design, construction, development, finance, hospitality and real estate brokerage, located throughout Europe, Asia, and North and South America. Tyrone has helped set multiple sale records across Los Angeles.

Tyrone was born in Dublin, Ireland, raised cross-culturally throughout Ireland, England, France, Asia and the US, and has a BA a degree In Environmental Studies from UCLA. 


Andrew Hurley


Raised by a Carpenter, Andrew has always been surrounded by Construction. After graduating College majoring in Construction Engineering Technology Management, Andrew started his career off working with the top Real Estate Advisory firm in Toronto, Canada providing consulting services for a wide array of asset classes to corporations, developers, lenders, sureties, investment funds and government agencies across North America. Andrew later worked for two separate Fortune 500 companies in Los Angeles, CA where his main focus has been utilizing his international experience in the industry at all stages of the development process from project feasibility analysis’ to project/development management. Andrew’s primary focus is in the luxury residential, hospitality and commercial fields for projects ranging from $1 million to over $2 Billion in construction value.

Neil O'Connor Cox


Neil O’Connor Cox graduated from the Dublin Institute of Technology in 2010 before joining Irelands Leading Quantity Surveying practice where he specialized in multi-family and commercial development across Ireland, UK and the Middle East. Neil spent 5 years involved in the luxury high rise condominium market in Toronto, Canada where he specialized in construction finance, construction loan monitoring and project management. A construction cost expert, Neil brings a wealth of experience from different markets worldwide to the luxury residential and commercial market in LA.

Megan Fatemi


Business and marketing / branding development professional with 15 years of experience in the real estate industry. Specializing in the luxury real estate sector in Los Angeles and amassing over $350M in sales annually as well as ranking #1 nationally for record breaking sales. Over the course of her professional career Megan has managed over $2billion in transactions from multi family, commercial, and raw land to the highest priced estate in the Country.

At Plus Development, Megan’s involvement spans across portfolio management, property due diligence and underwriting, cash flow and budget management, project analysis. Specializing in client representation during all phases of the property development process from master planning, site selection, land use approvals, team selection, bidding, and overall management of the design and construction process.

Gary Coates

Director, Miami

Gary specializes in assisting owners & investors in achieving their goals in the real estate industry. Gary graduated from the Dublin Institute of Technology in 2010 before relocating to Toronto, Canada where he spent 12 years in the private sector working on luxury residential and commercial projects. In 2022, Gary moved to Miami, Florida as an owner’s representative where his strong cost management background has proven invaluable to owners & investors on the large complex projects he manages. In order to provide his clients with the best possible level of service, Gary gets involved early in the development stage and works closely with the stakeholders to ensure value for money is achieved and maintained throughout the project.


Danielle Moses

Senior Project Manager

Danielle, a Los Angeles native, is a dynamic professional with a passion for design and architecture. She earned her bachelor’s degree in Architecture from the University of Southern California, where she honed her skills and knowledge. Danielle further expanded her expertise by studying architecture in Spain and traveling throughout Europe, gaining valuable insights into global design trends. In 2015, Danielle joined a globally renowned architecture firm, where she refined her design sensibilities and deepened her understanding of building materials. Transitioning into real estate development in 2018, she specializes in commercial adaptive re-use, ground-up, and tenant improvement projects across Los Angeles. With a keen eye for detail and a commitment to project success, Danielle leverages her architectural background to ensure clarity on timelines and critical paths. She collaborates closely with tenants, lead architects, and various consultants, fostering an environment conducive to thriving construction. Danielle’s dedication to excellence and her ability to navigate complex projects from inception to occupancy make her an invaluable asset in the real estate development industry.

John Dunne

Director, NY

John moved to New York City in 2012 after beginning his real estate career in Ireland and then South Africa. After gaining international development experience in the residential and hotel sector, he focused his attention on the high end residential markets of Greenwich and SoHo, building luxury homes and boutique condo developments. Through his unique understanding of New York City’s complex zoning and building codes, coupled with a key focus on creating lasting relationships, John has the ability to efficiently guide clients through all phases of the development process.

Michael Piechowski

Project Manager

Michael joined Plus Development Group in 2015 to pursue his passion of creating extraordinary spaces and bring ambitious visions to life. In addition to being a seasoned Development Manager; he is also a licensed and practicing general contractor as well as a licensed real estate agent with Official Partners. Michael’s steadfast commitment to delivering the highest quality product for his clients is what continues to fuel his passion within the high-end development space. His ability to seamlessly integrate the intricacies of real estate transactions with the art of construction allows him to provide clients with unparalleled insight and guidance throughout their journey. With a keen eye for detail, a comprehensive understanding of the construction process, and a track record of successful projects, Michael continues to be a driving force in the industry.


Michael was born and raised in Los Angeles. He attended Loyola High School in Downtown Los Angeles and upon graduation, pursued his education at The Ohio State University.

Sven Winkler

Project Designer

Sven was born and raised in Austria. After receiving his Bachelor of Architecture at the University of Innsbruck, he joined Studio Greg Lynn at the University of Applied Arts in Vienna. Shortly after attending an exchange semester at the Southern California Institute of Architecture in Los Angeles he returned to Vienna where he finished his graduate degree of Architecture.

Prior to joining Plus Development Sven worked as an architectural designer at International architecture firms and real estate companies. Sven taught seminars at the Städelschule in Frankfurt and design studios at the Southern California Institute of Architecture in Los Angeles.

His fascination with architecture and real estate not only originates from a theoretical point of view but also from his work experience which led him to manage projects from the design phase to plan check, construction documents and project construction administration. At Plus Development, Sven is lead designer, working on large scale projects, overseeing the designing and planning phases.

Brian Galloway

Project Manager

Brian’s passion for architecture and building started in childhood, and this interest has segued into leadership roles on a multitude of landmark projects including the renovation Dodger Stadium and the St Regis NY. He has managed estimating and cost control for projects exceeding $100M and scheduling for multi-phase institutional projects. Through these large projects Brian has honed his ability to lead a cohesive project team through the entire project lifecycle.

Brian is a native of the East Coast and holds a degree in Civil Engineering from The University of Maryland. Prior to joining Plus Development Brian worked at Marmol Radziner, a luxury design-build architectural practice based in Los Angeles. His involvement spanned design and construction; leading consultant coordination, estimating take offs, BIM coordination, construction administration and agency communication. Brian focused on adaptive reuse and custom residential projects and has in-depth knowledge of land use and permitting in Los Angeles for both commercial and residential.

During his ten years of industry experience Brian has worked in both the owner and builder roles, developing a discerning ability to understand client needs and translate design into high quality construction. It is this devotion for marrying tailored design with the highest caliber of construction that brought Brian to Plus. An outdoor enthusiast, Brian holds a strong appreciation for the connectivity of the built and natural environment in modern design.

Luisa Bustamante

Project Manager

Luisa is an accomplished architecture and real estate development professional with over 13 years of experience in the luxury residential, multi-family, and mixed-use project sectors. She started her career as an architect in the dynamic cities of London and New York City, working on highly bespoke projects for some of the world’s leading architecture firms.  As an architect she honed her skills in construction management and developed a passion for building new relationships, leading her to make the switch from architecture to real estate development.

Possessing a unique blend of architecture, construction administration, and development experience, she offers a practical approach with the highest level of design setting her apart in the industry. She has worked on over 12.5 million square feet of projects covering a range of locations from New York to Seattle, South America, and the Middle East.

With her strong project management skills and ability to engage with a diverse range of stakeholders, Luisa brings a proactive and positive attitude to every project, while consistently delivering superior results.

Kane Olszowski

Project Manager

Born in Ireland and raised across Poland, France and Denmark, Kane has 4 years of experience in the property development industry. After graduating in Monaco with a degree in Business Management, Kane joined Plus Development, managing two single family homes in construction. After completing the projects in Los Angeles, he returned to Dublin and joined the leading development and hospitality group in Ireland. Kane was involved in the full life cycle of real estate development of some of the newest hotels in Dublin including the iconic Clery’s mixed-use development. After working 2 years in Ireland, he has returned to Plus Development to manage and complete future developments.

Jean-Marc "JM" Tribié

Project Manager


Jean-Marc grew up in the Caribbean in a family of builders. He left Haiti to major in architecture at Rice University in Houston. His college years included summer internships in Miami and a yearlong stint in Singapore. Upon graduating, he remained in Texas a few years working as a design architect.

In 2011, Jean-Marc found his way back to Haiti where his architecture career evolved into a design and build practice. For nearly a decade, Jean-Marc realized projects and managed residential clients from beginning to end. He designed, permitted, budgeted, and constructed homes and small apartment buildings. He managed a small business, work crews, and handled client funds as general contractor. These hands-on experiences enriched him and gave him an understanding of how broad and dynamic the construction and development industry is. Being an “architect” could lead to many possibilities.

In 2019, Jean-Marc returned to the United States and joined a high-end residential architecture office in Miami. There, he worked again as a design architect. His desire to do more and be connected to the various phases of a project ultimately lead him to pursue a path as owner’s representative. Jean-Marc is based in the Miami office of Plus Development. 

Greg Trichilo

Junior Project Manager

Born in the small town of Schreiber Canada, Greg always had a place in his heart for Real Estate as his father was very involved in the intricacies of the real estate market, building, buying, and remodeling homes, which ultimately lead to Greg attending College for Construction Engineering Technology (Management).  

With a passion and experience for the business of development, Greg is adept at aligning client goals with design vision and oversight to solve the unique puzzle of each assignment. He enjoys working closely with clients, project consultants and teammates to balance multiple voices and gain consensus. In his roles as a junior project manager, Greg’s focus is on organization and coordination of all the intricacies of the day to day tasks.

Chance Earnest

Junior Project Manager

Born and raised in Los Angeles, Chance earned a degree in real estate from California State University Northridge.  Pulling from his background in real estate valuation, sales, and television production management, Chance brings a deep understanding of real estate markets, growth opportunities and project management to the Plus Development Commercial team.  He remains informed on ever evolving state and local zoning laws to offer value-add propositions and high & best use opportunities to each Project.  Chance takes great pride in building long term relationships based on honesty and integrity with clients and team members alike.


DRE# 02032493 

Michael Tingen

Project Designer

Michael Tingen is an architectural designer who has worked in New York, Zurich and Vienna. He holds a B.Arch from the Pratt Institute and an M.Arch from the University of Applied Art, Vienna under professor Greg Lynn. Michael is a design oriented architectural professional and is a firm believer that the role design is to provide unique formal solutions, which mediate beauty and pragmatism, and generate value, in the built environment.

Tina Phan

Office & Accounting Manager

San Jose native Tina Phan brings creative tech savvy and a sharp mind for number crunching as the Office & Accounting Manager for Plus Development. Getting her start with the firm in 2015 as the Project Accountant, Tina now manages everything from payroll to financial procedures and policies.

Shortly after graduating from the University of California at Riverside with a degree in business economics, Tina started her career as an Accounts Payable and Logistics Coordinator with a manufacturing company, where she was responsible for paying vendors, and managed activities throughout the order fulfillment and transportation cycle to make sure deadlines are met. She then began working as an Accounts Payable & Inventory Specialist with a civil engineering company, where she conducted a number of accounting tasks, including inventory and cash management, job costing and reconciliation reporting. It is here that she found interest in construction and cost accounting.

Tina is also a member of the National Notary Association and CalChamber.