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Miami Residential Architecture Firm

Discover Miami's premier residential architecture firm with over 30 years of expertise. Renowned for
our modern home designs, remodels, and additions.  We excel in swift permit acquisitions, ensuring
your dream home becomes a reality seamlessly.

Residential Architecture Firm

You may be looking at our website because you have been daydreaming about remodeling or making an addition to your residence in Miami, Florida.  Maybe your kids are getting older and they need more room or you’re just tired of your outdated kitchen or bathroom and are finally getting around to that upgrade you’ve always wanted. So where do you begin?  Read about our process below.


Consult a trusted, proven Miami residential architect with local expertise.  With offices in Coral Gables, we are centrally located.  Our first consultation is free as long as you own the property.  We have designed new custom homes, modern homes, but we have also designed many additions and remodeling in the Miami area.

Modern Home Designs Tailored to Miami's Lifestyle


United Architects, Inc., is an architecture firm whose work has been featured nationally on HGTV. has selected us as one of the top architecture firms in Miami. We are known for cutting through the permitting process and red tape, getting your plans approved quickly and effortlessly. That way you can start enjoying your new house, remodeling, or addition that much sooner!

Maybe you are interested in building a multi-family residential project.  We have designed those as well.  The principal of the firm, Maria Luisa Castellanos, R.A., was in charge of three HUD 202 affordable senior housing projects.

If you are interested in sustainable design, Maria Luisa Castellanos has the designation LEED AP from the United States Green Building Council (USGBC), giving her the expertise in designing sustainable projects.

We Listen

An architect who is accessible and listens? Yes, please!  We are here to listen to your deepest desires and help you bring them into reality.  We are not tied to a particular architectural style, but we work with you, the client, to achieve a house you love!  As a design firm that cares deeply about client input, we do not try to impose our ideas on the client.  Rather we work with your ideas so that together we can take good ideas to the next level and create really great spaces!  This is why our tagline is "Turning raw ideas into comfortable, livable, inspired buildings and residences in Miami, Florida."


We Help You Deal with the Building Department

Dealing with the Building Department - We can help you sail through it!  Many people cringe at the thought of having their projects permitted, but as architectural designers with years of experience, we can be quite helpful in aiding you to navigate the permitting process.  Many clients are coming from outside the state or even outside the country.  For these foreign clients coming to the United States and trying to build here is often an overwhelming process.  We are aware of that. 

​​As Miami architects, designing residential projects for many years, we bring extensive knowledge of the construction industry, forging good relationships and an excellent reputation with local building departments. Our familiarity with this area, the various departments, and disciplines, can help navigate your plans through the process quickly.

Unlike many Miami architecture firms, we only send completed drawings to the building department.  Then, we carefully follow up during the entire permitting process. This means we actually go to the building department and meet with the officials, if necessary, unlike other firms. . We are always available to walk you through the process and let you know what to expect each step of the way.

We Help you Select the Right Contract and Contractor for Your Project

Dealing with Contractors – We can be fierce negotiators for you.  We help you select the best contractor for the project, often through multiple bids or a negotiated process.  We can help you determine the best written contract for the project.  We consistently negotiate the most cost-effective deals for our clients — while still keeping our friendships in the construction industry! Check out our website, then call or text Maria Luisa Castellanos on her cell at 305-439-7898 or write at

Learn more about the building process for a new home

If you want to learn more about the process of building a new home in Miami, infill your information below, click submit, and get access to an article explaining the process. We promise we will not overwhelm you with emails. You will only get an occasional email from us on interesting topics about architecture, real estate, or construction.

Subscribe to the site and access an article about building your new home 

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If you want to learn about our process of producing a design and construction documents for you to use for permitting, and the services available during construction, read the two articles below.  No login is required.  Just click on the links:


The Residential Design Process - Part One

The Residential Design Process - Part Two

United Architects has been honored as the Bronze Winner in the Remodeler/Contractor Category of the

Miami Herald's Miami-Dade County Favorites Contest

at the end of 2023.  We were the only architects honored.

United Architects has been honored as one of the best architecture firms in Miami for 6 years in a row, starting in 2016.  Click on the icon below.

We were recently chosen as one of the best residential architects in Coral Gables.  Click on their name below to see the article.

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And recently we were notified that we were awarded the Best of Houzz Service Award

and recommended by  See below.

The Best of Houzz Service Winner
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Call or email Maria Luisa Castellanos, R.A., LEED AP, the principal of the firm, at 305-439-7898 or to discuss your exciting project and how we may be of service to you.

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If you’re still not convinced, check out our Glowing Reviews, at Reviews/Letters of References.

Call to set up a complimentary initial appointment to discuss your project, if you own the property within Miami-Dade County.

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