About

About Poseidon Valuation

Independent appraisal for eminent domain, right of way, and complex commercial property in Colorado and Texas.

Built for complex valuation assignments

Poseidon Valuation is a specialized commercial real estate appraisal and advisory firm focused on eminent domain, right of way, public infrastructure, utility corridors, and complex property valuation. Our work ranges from individual properties and easements to multi-parcel transportation, transmission, water, drainage, and public acquisition programs.

Our assignments routinely involve more than determining a unit value. We analyze partial acquisitions, permanent and temporary easements, remainder damages and benefits, costs to cure, access, configuration, development potential, existing encumbrances, highest and best use, and the effects of proposed infrastructure on the remainder property.

Scale without sacrificing senior judgment

Poseidon's team-based workflow allows experienced appraisers to remain focused on inspection, highest and best use, comparable selection, valuation analysis, damages and benefits, reconciliation, and final conclusions while dedicated personnel support market research, verification, GIS and mapping, document control, comparable data management, and report production.

The result is a platform capable of delivering individual assignments as well as coordinated multi-parcel and corridor projects with consistent methodology, documentation, and quality control.

Technology-enabled. Market-supported. Defensible.

Our analysis combines professional appraisal judgment with property databases, GIS, aerial imagery, zoning and land-use information, floodplain and environmental mapping, surveys, engineering plans, cost information, demographic data, and project-specific research. Every assignment is developed around the underlying appraisal problem rather than a standardized conclusion.

Our objective is to provide valuation analysis that is clear enough for negotiation, rigorous enough for review, and defensible when subjected to litigation-level scrutiny.

Poseidon Valuation, LLC is the parent company of Titan Commercial Valuation, LLC. Poseidon Valuation represents the firm's expanded national valuation and advisory platform, while Titan Commercial Valuation, LLC remains an active affiliated entity and continues to be recognized under existing contracts and client relationships.

Over $4.6 billion in aggregate appraisal value conclusions across our assignment history.

Based on recorded assignment conclusions in the firm's appraisal history, including work under Titan Commercial Valuation. Selects the higher recorded numeric Premise 1 or Premise 2 value per row; includes repeat assignments, multiple valuation dates and differing valuation premises.

Headquarters

Golden, Colorado

Colorado service area

Texas Office

Austin, Texas

Texas service area

Our Team

André N. Suissa, MAI
Owner and Lead Appraiser
André N. Suissa, MAI, founded Poseidon Valuation to deliver specialized eminent domain, right-of-way, and complex commercial appraisal services. With nearly 20 years in real estate appraisal, he earned his MAI designation at age 25 and holds a Certified General Real Estate Appraiser credential. A Colorado College graduate, he leads a firm with over $4.6 billion in aggregate appraisal value conclusions across its assignment history.
Beyond appraisal, Suissa brings hands-on real estate expertise. He is a licensed real estate broker, active developer—including Empire, Colorado's first major residential subdivision and current industrial entitlements in Weld County—and founder of 720 Real Estate Solutions (residential appraisal) and FuseGIS (real estate GIS technology). He has served as a property tax consultant and maintains involvement in family real estate investments and development in Austin.
This practical development background gives him direct insight into land entitlement, infrastructure costs, financing, feasibility, and how public acquisitions affect property value and development potential. His technical education includes eminent domain valuation, transmission-line analysis, litigation appraisal, expert-witness practice, and federal appraisal standards.
Raised in South Texas and based in Golden, Colorado, Suissa maintains strong interest in sustainable development, artificial intelligence in real estate, and the evolution of the built environment. Outside of work, he is an avid skier, hiker, and mountain biker.
Todd D. Milligan
Senior Certified General Appraiser
Todd D. Milligan is a State Certified General Real Estate Appraiser in the State of Texas and is currently pursuing the MAI designation with the Appraisal Institute. Mr. Milligan has over twenty years of experience in property valuation. He has an extensive background in the valuation of investment and user-based specialized real estate and has appraised properties throughout the State of Texas and the United States. Appraisal purposes have included property tax, financial reporting, financing, purchase or sale, insurance, fair rental, condemnation, and donation. More recently, Mr. Milligan has performed lending-related appraisal assignments for community and regional banks. His advisory services have included appraisal review, market research, appraisal management, and offer and option analysis. Properties he has appraised, or assisted in valuing, include land; commercial real estate, including industrial, office, retail center, and mixed-use; and special-purpose properties, including service stations, restaurants, and hotels and motels.
Mr. Milligan holds the LEED AP Building Design and Construction credential. He is a member of the International Right of Way Association, the Appraisal Institute, the National Association of Realtors, CCIM Institute, and the Urban Land Institute. He is an active member of the Austin Young Chamber of Commerce and the Young Men’s Business League and an alumnus of the Leadership Austin 2014 Emerge Program.
Christy Starkovich
Certified General Appraiser
Christy Starkovich is a Certified General Appraiser with Poseidon Valuation, holding certifications in both Texas and Colorado. She earned a Bachelor of Fine Arts in Photography from Eastern Michigan University and has 12 years of commercial real estate appraisal experience. Her experience includes a broad range of commercial and specialty real estate, with particular experience in FAMC-compliant rural and ranch appraisal work, RV parks, unique properties, and eminent domain valuation assignments.
Throughout her career, Christy has developed experience valuing properties throughout Texas and Colorado, including complex and atypical assets that require careful consideration of property-specific characteristics and market influences. Her eminent domain work includes assignments involving partial acquisitions, permanent and temporary easements, and analysis of the effects of proposed acquisitions on larger parcels. Prior to joining Poseidon Valuation, Christy worked with David E. Jones & Associates, BBG, and Titan Commercial Valuation, providing exposure to a wide range of appraisal assignments, clients, and markets.
Outside of appraisal, Christy enjoys spending time with her family and her dog, as well as cooking and camping. She also maintains a longtime interest in photography, having earned her BFA in Photography before beginning her career in real estate appraisal.
Oscar Guerra
Certified General Appraiser
Oscar Guerra is a Certified General Appraiser from Laredo, Texas, specializing in complex commercial appraisals, including industrial, retail, and right-of-way valuations. Oscar graduated from Texas A&M University – College Station, where he completed his degree in just two years with a 4.0 GPA at the age of 20. He began his appraisal career with Poseidon Valuation in 2024 and earned his certified general credential in 2026 at the age of 22, making him one of the youngest certified general appraisers in the nation.
Oscar's experience includes eminent domain and right-of-way assignments, where valuations must be thorough, well supported, and clearly documented for both property owners and acquiring agencies. He also appraises industrial and commercial properties in Laredo, a market shaped by its role as one of the nation's busiest inland ports, and holds a Texas real estate sales agent license.
Oscar's path into appraisal runs in the family. His grandfather, Oscar Sr., was one of the first real estate appraisers on the Mexican side of the border in Nuevo Laredo, Tamaulipas, and his example inspired Oscar to pursue the profession.
Aaron Barnes
Appraiser Trainee
Aaron Barnes is an Appraiser Trainee with Poseidon Valuation and has two years of appraisal experience. He holds an MBA and is licensed as a Texas Appraiser Trainee (TX 1343961). His work focuses on commercial real estate and land valuation, including assignments involving right of way and easements in Texas and Colorado.
Aaron has worked on projects involving permanent and temporary easements and other property interests affected by right of way acquisitions. His prior experience in commercial finance, business brokerage, and mortgage lending gives him a practical understanding of how owners, lenders, and buyers use valuation information. He brings that perspective to researching properties, studying market data, and supporting the analysis behind Poseidon’s appraisal reports.
Outside of work, Aaron enjoys hunting, fishing, traveling, and reading. Those interests give him opportunities to explore new places and meet people, and he enjoys learning about the communities and properties he encounters through his appraisal work.
Taylor Henri
Appraiser Trainee
Taylor is an Appraiser Trainee with Poseidon Valuation and has over 12 years of appraisal and consulting experience with Henry S. Miller, David E. Jones & Associates, BBG, Inc., and Poseidon Valuation. He graduated from Oklahoma State University in 2013 with a Bachelor of Arts in Business Administration, specializing in Economics.
Taylor has completed more than 500 appraisal reports across Texas, covering commercial land, self-storage, multifamily properties, multi-tenant offices, retail, fast-food restaurants, net-leased properties, complex mixed-use developments, and convenience stores. His work also extends to Colorado, where he has contributed to eminent domain, right of way, and partial acquisition easement appraisals.
A Dallas native, Taylor has spent much of his life in Dallas and Austin and now lives in Colorado Springs. He is an avid Oklahoma State football and Dallas Stars hockey fan.
Amber N. Roberts
Report Preparation and Production Specialist
Amber N. Roberts is a Certified Residential Real Estate Appraiser who supports appraisal report preparation and production at Poseidon Valuation. She has worked in the real estate appraisal profession since 2021, beginning as an appraisal office associate before advancing through the Appraiser Trainee and Certified Residential Appraiser credentialing process. Amber earned an Associate degree in Accounting and Bookkeeping from Virginia College at Austin and has completed extensive appraisal education in market analysis, highest and best use, appraisal methodology, report writing, USPAP, and right-of-way appraisal.
At Poseidon, Amber assists with the research, preparation, organization, and quality control of commercial and eminent domain appraisal reports. Her responsibilities include property and market research, public-record and zoning research, report preparation, exhibits, document organization, and review for accuracy and consistency. Her appraisal education and hands-on experience contribute to reports that are thoroughly researched, clearly documented, and well supported.
Amber’s background also includes service in the U.S. Air Force as a meteorologist with the 26th Operational Weather Squadron, where her responsibilities included forecasting severe weather across “Tornado Alley” and providing aviation weather support for military flight operations. Outside of work, Amber enjoys spending time outdoors and is an avid New Orleans Saints fan.
Becky Parker
Appraisal Production Specialist
Becky Parker is an Appraisal Production Specialist with Poseidon Valuation and has worked with the firm since April 2015. Before joining the firm, she retired as an economist from the Texas Workforce Commission after nearly 31 years. Her background in economic research, data analysis, and documentation supports her work on commercial and eminent domain appraisal reports.
Becky provides writing and production support for report sections outside the valuation analysis. She coordinates inspections and project documentation, tracks assignments and milestones, and helps prepare final deliverables. She also researches zoning regulations and prepares the zoning sections of many of the firm’s reports. For complex assignments, she helps keep supporting information organized and production schedules on track. Her research and organization help the appraisal team produce accurate, well-documented reports.
A native Austinite, Becky enjoys traveling, home improvement and landscaping projects, and spending time with her family, friends, and her 11-year-old Corgi.