About us

About us

Why choose Gravitas Valuation for your appraisal and market analysis needs?

High Quality, Compliant Reports

Accurate, audit-ready reports built to meet regulatory standards—delivered with clarity, consistency, and confidence.

Competitive Fees

Transparent pricing with exceptional value—expert service without unnecessary costs.

Quick Turn-Around Times

Fast, reliable delivery without compromising accuracy or attention to detail.

Experienced, Licensed and Insured

Trusted professionals with proven expertise—fully licensed, properly insured, and committed to the highest industry standards.

MAI Designated Appraiser

Trusted professionals with proven expertise—fully licensed, properly insured, and committed to the highest industry standards.

Cutting Edge Database & Tech

Trusted professionals with proven expertise—fully licensed, properly insured, and committed to the highest industry standards.

Need a commercial appraisal?

Tell us the property and the purpose. You get a written scope and fee estimate within 24 hours — not a sales call.

Contact us today to discuss your needs.

Have questions or a specific assignment in mind? Start the conversation today.

About us

Our Team

Eric Sobotka, MAI, Chief Appraiser at Gravitas Valuation

Eric Sobotka, MAI

Chief Appraiser

C: 248-251-5331

Prior to forming Gravitas Valuation, Eric was an appraiser/analyst with Integra Realty Resources- Sacramento (IRR), The Fillmore Group (now IRR – San Francisco) and Pacific Appraisers. He also held several development and acquisition roles with a number of regional developers where he was involved in the acquisition, entitlement, and/or development of over $500M in multifamily, self storage, retail properties. Eric received his Bachelor’s degree in Economics from the University of California Davis and is a licensed Real Estate Broker in CA & MI, and a Certified General Real Estate Appraiser in MD, DC, VA, IA, CA, CO, NC & MI.

Boris Maslow

Advisors

Boris is a Certified Residential Appraiser based in the Baltimore area with over 18 years of experience. He brings a broad background working with both lenders and private clients, giving him a well-rounded understanding of the factors that influence property values in the local market. In addition to his appraisal work, Boris has renovated multiple single-family homes, providing him with in-depth knowledge of construction costs and the renovation process.

Mark Montag

Advisors

Mark is a Certified General Appraiser with over 30 years experience working primarily in the fuel distribution sector. His appraisal experience spans a variety of commercial assets, including bulk oil terminals, propane companies, fueling stations, convenience stores, and service sites. Prior to entering the appraisal field, Mark spent eleven years in the financial services industry, serving as Vice President at two suburban institutions and overseeing the valuation and sale of bank-owned properties in five states. Mark holds an MBA and a Bachelor’s degree from the College of St. Thomas.

Gordon Bergthold

Advisors

Gordon is a Certified General Appraiser in California with over 55 years appraising commercial and agriculture properties throughout the United States. He is a member of the American Society of Farm Managers and Rural Appraisers (ASFMRA) and has extensive experience as an expert witness. He also specializes in water rights and arbitration/mitigation.

What clients say

I have been working with Eric and Gravitas Valuation for some time now, and I find his work to be trustworthy and credible. As a residential appraiser, I feel very comfortable with referring my clients who need commercial appraisals to them.
CortneyResidential appraiser
I've had the pleasure of working with Eric at Gravitas on several commercial real estate appraisal projects over the years. He consistently demonstrates a high level of diligence and attention to detail, delivers on time, and makes the entire process smooth and efficient.
MaxRepeat commercial client
They were very professional, responsive and respectful of my timelines. Eric was incredibly nice to talk to on the phone and set me at ease when I had any questions or concerns.
JakeProperty owner
The team at Gravitas Valuation provided a thorough and insightful property appraisal for an estate matter, completed within a week of engagement. The report gave us confidence and clarity.
MichaelEstate client

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