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

Headquartered in Los Angeles with offices in New York, Dublin and Dubai, 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, from Architects, Interior Designers, Engineers, General Contractors, Corporations and Business Partners.

  • Project Management
  • Development Management
  • Construction Management
  • Design
  • Loan Monitoring
  • Expert Witness
  • Cost Management
  • Dispute Resolution
  • Real Estate Brokerage
  • Due Diligence
  • Lenders Representative / Fund Control
  • Design / Entitlements Management
  • Procurement Management
  • Schedule Management

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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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Christopher Carlin


Born in Ireland, Christopher brings over two decades of experience in London, Los Angeles, New York, San Francisco, Italy, Spain, Switzerland, UAE & Africa. With a specialized focus on the Private Sector, specifically Medium to Large scale luxury Hospitality/ Commercial/ Residential Mixed-Use Developments, he is highly skilled in Investment Feasibility, Land Acquisition, Entitlement Management, Master Planning, Debt & Equity Capital Markets, and Investor / Operations Management. He has worked on some of the most iconic developments in each location he was based.

Christopher is a Member of the Royal Institution of Chartered Surveyors (MRICS) and graduated with a Degree in Construction Economics with focus on Construction Law and Risk Management. Prior to forming Plus Development, he spent earlier career as Partner in a leading Global Project & Cost Management firm and oversaw West Coast USA operations.

Tyrone McKillen


Since forming Plus Development with partner Chris Carlin, 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 over 15 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

Director of Operations

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.

Mick Unwin


Michael is a Construction Professional with more than 12 years construction industry experience spanning North America and Australia. He is experienced in leading project teams through all facets of a projects life cycle with specific attention to finance, team structuring/development, design management, procurement strategies, construction and handover. Michael’s project experience includes assignments across luxury / high end retail, industrial, commercial, hospitality and luxury aged care developments.

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.

Allen Plasencia

Design Director, Plus Design Studio

From scope of detail to master planning of estates, Allen is a designer with a broad range of design experience. With a Masters in Architecture from Yale University, Allen has provided 9 years of professional services to the real estate sector with design projects across the country from Miami to Los Angeles. Allen is well-versed in the aesthetic diversity and construction knowledge required for high design.

While at Plus Development, Allen has served as Project Manager and Design Studio Director for local and international projects ranging from residential to commercial scale. He specializes in the design process starting with conceptual program development — including establishment of client goals, feasibility analysis and team assemblage — to curating spaces tailored to match the client’s lifestyle.

Prior to working at Plus, Allen played a key role in the development and coordination of award-winning projects at LA-based XTEN architecture as well as partook in the Construction Management services at Tech Construction Group Miami.

With a passionate interest in material, light and space Allen designs each project to match a narrative inspired by the site and our clients.

Michael Piechowski

Project Manager

As a native Angeleno, Michael has seen first-hand how the Los Angeles real estate market has taken shape over the past ten years. Son of a mechanic, who doubled as a carpenter that built his childhood home, Michael knew from a young age he wanted to be involved in the business of real estate and construction. He began his career with a boutique firm based in West LA. It was there he sharpened his aptitude for the trades and gained a deeper understanding of the nuances involved in buying/selling and building real estate in Los Angeles. 

Michael quickly came to understand the importance of constructing and designing top quality homes, so he supplemented his sales knowledge with design and project management. This has allowed Michael to provide his clients with the full suite of information, pertinent to real estate transactions. Michael joined the Plus Development team in 2015 and is currently managing over 200,000 square-feet of residential development projects in the design, planning and construction phases.

Michael was born and raised in Mar Vista, California. He attended Loyola High School in Downtown Los Angeles. After graduating from Loyola he attended the Ohio State University. 

Gary Mead

Project Manager

Gary began his career in the event management business, specializing in large scale multistate events backed with International DJs and a worldwide following of attendees.  With a passion for sustainability and design, Plus was a natural pairing to broaden his desire to influence development through a new light.  Always looking to giveback Gary organized a team building weekend in Mexico building a home for a family in need through The Greatness Foundation.  He  is also a founder of Live More Happy, an organization with a focus on building relationships through outdoor experiences, using community as a form of empowering peoples self-worth and happiness.  At Plus Gary has focused on residential projects in Beverly Hills, Bel Air and the Hollywood Hills, he has successfully completed multiple projects which range from ground up to remodel, and historical designation.

Randolph Wolters

Project Manager

Randolph has amassed over 10 years of architectural design and real estate development experience. He enjoys the synthesis between design and underwriting in the pursuit of projects that are both architecturally progressive and financially successful.

He has a Master’s in Real Estate Development from the University of Southern California, and has led residential, mixed-use projects ranging from 8 to 1,200 units and 2,500 to 100k square feet of commercial space.

Prior to real estate development, Randolph earned his Bachelor’s in Architecture from Boston Architectural College. He practiced design in Boston, New York, and Los Angeles, managing projects ranging from pre-fab single family homes, to high-end commercial tenant improvements, to mixed-use high-rise towers. 

Randolph is a first generation American, raised in a Dutch and Polish household, and an avid fan of Asian cuisine.

Robbie Lawlor

Project Manager

Robbie is a qualified Civil Engineer out of University College Dublin, who also holds a masters in Management from Nottingham Trent University. His expertise in project and portfolio management has led to roles in a diverse range of locations including Ireland, US and the Middle East where he has been for the past 8 years.

Before joining Plus, Robbie has managed projects through the full life cycle, from feasibility, design through to construction. He brings a wealth of end to end delivery on large scale projects in residential, commercial and other industries.

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.

Katie Mangin

Senior Manager - Planning & Entitlements

As the granddaughter of a cement mason and custom home builder, Katie’s interest in real estate is rooted in the pride her grandfathers took in being part of building their community.

This interest became the foundation of Katie’s decision to move to Los Angeles from Chicago to study real estate development at the University of Southern California. Motivated by opportunities to participate in design driven, urban infill projects, Katie is experienced in managing both new construction and adaptive reuse projects from conception to completion.

Having built her experience at Caruso Affiliated and South Park Group, Katie joined the Plus Development team in 2018 to manage commercial developments in Los Angeles and West Hollywood and to continue the privilege of delivering thoughtfully designed, neighborhood pioneering projects.

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.

Sejal Bahety

Junior Project Designer

Originally from Mumbai, Sejal came to the United States in 2015 to pursue studies in Architecture at Woodbury University. Her interests in design have since been influenced by her upbringings in international and culturally rich urban centers. Prior to joining Plus Development as a project designer, she has held supportive roles in architecture and interiors with TCP Architects, Mumbai and Warren Office of Research and Design, Los Angeles, mainly for residential, commercial and hospitality project types. She has also previously worked with a design-build community organization in assisting the development of affordable housing in rural India, from which she had her first exposure to building construction. Sejal enjoys exercising her affinity for architecture through travel and photography and believes in the transformative power of quality design on human life.

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.


Yesenia Prieto

Project Administrator

Yesenia has diverse Project Administration experience in Development, Investment and Property Management.  Working in a support role, she assists Project Managers and Project Teams in the development and implementation of tracking, coordination and procurement systems tailored to meet the unique needs of each project.

Prior to joining Plus Development, Yesenia worked at a boutique real estate development and investment firm where she supported the Director of Development on hospitality and commercial projects during the pre-development and development phases. Having also worked in property management and sales, Yesenia’s detailed project experience includes the full breadth of real estate development.

Yesenia holds a Hospitality Management Certificate from Los Angeles Valley Community College and is pursuing a Bachelor of Science in Business Administration at Cal State Northridge to supplement her extensive professional experience.

Sandeep Dhariwal

With ten years of international luxury real estate experience, Sandeep has honed her skills in the art and science of selling homes – both domestically and internationally. This global sales experience has allowed her to develop a bespoke approach to the marketing and sales of any property. She retains a vast knowledge of the high-end real estate market in Los Angeles, London and Barbados. 

Over the course of her career, Sandeep has been involved in both selling luxury development projects from concept to completion and in the sales of single-family homes to HNWI around the world. She began her career selling highly acclaimed architectural properties in Los Angeles and later expanded her reach to include selling luxury properties in international markets.

Her past experience has involved listing one of the highest priced homes in the world whilst representing the most prominent developer in Barbados, selling luxury waterfront homes with yacht berths on the glamorous West Coast of Barbados. She has facilitated the sale of numerous homes in Prime Central London; and conducted referral business in the South of France, Cayman Islands and New York City. 

Having worked with a diverse assortment of international stakeholders, Sandeep has a strong intuition for understanding the underlying motivations of buyers and sellers; enabling her to effectively adjust her sales technique and artfully connect people with space. She has extensive staging experience and a keen eye for detail, enabling her to maximize the perceived value of a home, often involving making connections between art and home. Her clientele hold her in the highest regard for her relentless work ethic, adept negotiation skills, reliable accessibility, and commitment to absolute discretion.

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.