So You Can Pursue Your Business Dreams

Commercial Construction, Business, Real Estate, and Injury Defense Lawyers

We are accessible when you contact us, approachable, and committed to your business goals. As your legal advocate, we listen to understand and then align our work to achieve your desired outcomes.

We dispel fear and confusion by clarifying your legal situation. As your trusted adviser, we make sure you understand the current laws affecting your business, potential risks and threats, and your resolution options.

Our full-service, affordable, legal practice offers exceptional representation and service. We provide smart solutions to your legal needs, freeing you from the burden of your legal concerns.


Brewster Law Firm (BLF) is a cost-effective, full-service legal practice of high-character, knowledgeable, and experienced lawyers.

Our Clients

Private and family-owned businesses, commercial property owners, developers, general contractors, subcontractors, and insurance companies trust us to deliver practical legal solutions that set them up for success.


Serving commercial construction, business, real estate, and insurance defense clients since 1988.

Construction Law

Writing, Revising, and Negotiating Construction Contracts; Interpreting and Explaining Contracts; Enforcing or Contesting Contracts.

Construction and Design Defect, Personal Injury and Death Defense; Construction Premises Liability; Dispute Negotiation, Arbitration, Mediation and Litigation.

Mechanic’s Liens and Bond Claims; Debt Collection and Defense; Confidentiality and Non-disclosure Agreements; Other General Construction Law-related Advice.

Business and Real Estate Law

Selecting and Creating Appropriate Business Entities and Structure; Buying, Selling and Transferring Businesses and Business Interests.

Writing, Reviewing, Negotiating, and Litigating Multiple Types of Business and Real Estate Contracts; Explaining Contracts and Business Issues.

Sales, Purchases, Leases, Title and Ownership Issues; Mineral Rights; Advice on a Wide Range of Business and Real Estate Topics.

With our many years of legal experience, we have probably seen a situation like yours. We look forward to applying our legal knowledge to address your specific legal needs.

Let BLF free you from your legal situation,
so you can pursue your business dreams.


Listening to understand, helping you recognize what is possible or likely, and striving to make it happen.


The first step in our team approach is to understand what you want to accomplish. We will sit together and listen as you explain your concerns, needs, and goals. This critical first step is essential to get to the heart of the matter and work to achieve your goals.


We honestly and ethically evaluate your situation and give you our realistic opinion of the legal issues involved. We think several moves ahead, and lay out a game plan for how we can accomplish your goals. If we feel your goals are unattainable, we’ll provide alternative options to consider.


Next, we’ll explain what you can expect from the other side, and in costs. While the fees and time commitment are variable, we use our years of experience to give you a realistic range of costs and time likely required for your situation.

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Finally, we’ll move forward with the agreed-upon plan of action, keeping you informed and involved along the way. Over time, we will continue to reevaluate your goals, your situation, and our game plan, to ensure our work is in step with the needs of your current situation.

Listening to you is an essential part of what we do and is how we create your game plan. Listening to understand you is our first and most important job.Mark Brewster, Owner, Attorney


Mark Brewster

Owner, Attorney

Mark strives to help his clients see disruption and challenges as opportunities for something new to emerge. He is a proactive lawyer who puts his clients first and helps them understand options, including possibilities others may not recognize.

Gregory W. Geerdes

Associate Attorney

Greg is an energetic, dedicated advocate, focused on finding the right resolutions to his clients' legal needs, in the most efficient way. He uses his 25+ years of experience to analyze complex legal situations and simplify them into clear advice and honest answers that set his clients up for success.

David Brewster

Associate Attorney

David believes strongly in being available and approachable for his clients. Through a hands-on approach and individualized attention, David helps clients consider both the legal and business impacts of the strategy options and opportunities available to them.

  • Mr. Brewster has written and negotiated several business contracts for our company. He is an excellent attorney with a high standard, and very thorough in all his work. I highly recommend him and his work.

    Susie Business Owner
  • Mr. Brewster is a capable and experienced attorney representing clients in dispute resolution proceedings. He has appeared in such proceedings in which I was the arbitrator or mediator. I always found him to be very professional and responsible in his representation of his clients and his interactions with opposing counsel.

    Richard Construction and Development Attorney
  • Over the 2+ years he worked on my case I got to know Mark and became impressed with his intellect, his judgement, his legal knowledge and his caring way in dealing with me and my issues. I would, without reservation, recommend Mark Brewster for your business and personal legal needs.

    Ed Construction Business Owner
  • Mark and his team are very knowledgeable in construction litigation, very easy to communicate with during our ordeal, and did an excellent job presenting our case in arbitration.

    Gabe Home Owner
  • I have referred to Mr. Brewster many clients and others needing litigation assistance.

    Kevin Estate Planning Attorney


Brewster Law Firm is a highly-respected business and construction law firm that embodies integrity, humility, and care for others. Our high-character, experienced legal team, works passionately to explain to clients their legal situation, options, and costs, and strives to meet our clients' goals. We are unique because we handle both transactions and litigation, providing our clients continuity and consistency when dealing with their legal matters.

Practicing law in San Antonio and the surrounding area since 1988, we've developed a reputation for being honest, ethical, and available to our clients. They know they can trust us to work hard to resolve the legal matters that easily entangle a business's ability to perform and grow. Our work helps free them to pursue their business dreams.

Our Values

We provide you our honest and ethical opinion of your situation.
We put your interest ahead of ours'. We want and respect your opinions and desires.
We try to return phone calls and emails in 24 hours and be available to you when you need us. Your business is our business!


San Antonio Office

We're located in the Oak Ridge Square Building in north central San Antonio.