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About Luma

A real estate company built by people who build.

Luma is a Seattle-based, locally owned and operated real estate company. We started it because we kept seeing the same thing: people buying homes without anyone at the table who truly understood how houses are built.

A Luma construction project in Seattle
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Our story

From building homes to helping people find them.

Before Luma, our team spent years in Seattle’s residential construction and development world — designing homes, working through permits with the City, managing crews and trades, and building new houses and backyard cottages from the ground up.

That work taught us how a house really goes together: what’s easy to change and what isn’t, which problems are cosmetic and which are expensive, and what it actually takes to turn an idea into a finished space.

Luma brings that knowledge to buyers and sellers. We help clients understand what a property is today and what it could become — and because we keep our design and construction services for the people we represent, we can stay with them long after closing.

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What we value

How we work with clients.

  • Practical expertise

    We’ve designed, permitted, and built homes. That experience shapes how we advise clients — in plain language, without guesswork.

  • Personal relationships

    You’ll work directly with the people who own and run Luma, not a rotating cast of strangers.

  • Quality construction

    We know what good work looks like, and we hold ourselves to it on every project we take on.

  • Transparency

    Honest advice about condition, cost, and timing — including when the answer is “don’t.”

  • Long-term support

    The relationship doesn’t end at closing. We want to be the first call for whatever the house needs next.

  • Local knowledge

    We live and work in Seattle. We know the neighborhoods, the housing stock, and how the City works.

The team

Meet the people behind Luma.

Portrait of Sarah McCormick
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Sarah McCormick

Broker

Sarah was born and raised in Seattle, and she loves helping people find their place here. Whether you’re moving across the country or a couple of miles, she knows there are gems to be found in every neighborhood.

Before joining Luma, Sarah closed 75 home sales across the Seattle area, from first condos to family homes and new townhomes. When she lists a home, she combines her background in marketing with careful market analysis to price it well and put it in front of the right buyers.

Her goal is simple: make buying or selling as clear and efficient as possible, and be there to answer the call. Sarah also speaks Spanish.

5.0 · 10 reviews on ZillowRead Sarah’s reviews ↗
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Duncan McCormick

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Duncan has spent more than a decade in Seattle residential construction — designing homes, managing construction, and handling permits directly with the City of Seattle and jurisdictions across Puget Sound.

Since 2015, he has designed, permitted, and built more than a hundred single-family homes and accessory dwelling units in Seattle through DMC Land & Design, with a focus on backyard cottages and ADUs that add much-needed housing to established neighborhoods.

At Luma, he helps clients understand what a property can become: what’s realistic, what it may take to permit, and what to plan for.

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Real estate, design, and building — under one roof, for the people we represent.

Start here

Let’s talk about your next move.

Whether you’re starting to look, getting ready to sell, or wondering what a house could become, we’re happy to talk it through — no pressure, no obligation.

Contact LumaCall 206-660-4203

Sarah McCormick

Broker

206-660-4203

[email protected]