Build Up or Out? How to Choose the Right Type of Home Addition in Spokane & North Idaho

June 16, 2025

If you’re running out of space but love your location, adding onto your home is often the smartest move. But the big question always comes up early: Should we build up or build out?


At The Building Company, we’ve helped homeowners from Spokane Valley to Sandpoint expand their homes in ways that make sense for their property, lifestyle, and budget. Here’s how we help you decide what’s right for your addition.

The Case for Building Out

Building “out” means expanding your home’s footprint—typically through ground-level additions like new bedrooms, family rooms, or sunrooms, rear or side bump-outs, or garage conversions.



Building out is often more straightforward and cost-effective, especially for homeowners who prefer single-level living or want to avoid the complexities of vertical construction. It can also simplify access during construction and reduce the need for structural reinforcement. However, it does require adequate lot space and may impact landscaping, patios, or yard usability. Zoning restrictions or setback requirements can also be a limiting factor.

The Case for Building Up

Building “up” involves adding vertical space—most commonly a full second story, a pop-top addition, or converting attic space into livable square footage.



This approach is ideal for tighter urban lots or when preserving your outdoor space is a priority. It often adds more square footage without taking up valuable yard real estate and can improve privacy or even views. That said, building up can introduce engineering challenges, require staircases that take up interior space, and may be subject to height or design restrictions depending on your neighborhood.

What Really Drives the Decision

There’s no one-size-fits-all answer, but we help Spokane and North Idaho homeowners weigh several key factors:

  • Zoning and setback regulations, lot size, and existing structural conditions all play a major role. A home’s foundation, for example, may not be capable of supporting a second story without significant upgrades. Budget is also important—building out often has a lower cost per square foot, while building up may yield more square footage when horizontal expansion isn’t an option. Lastly, lifestyle preferences matter: some families want all bedrooms on one level, while others prefer a dedicated upstairs retreat.
  • We bring in our structural and design partners early to help you understand what’s possible—before you invest in plans or permits.

Examples from the Field

Building Out in Liberty Lake: We recently helped a family with a large corner lot expand their kitchen and add a sunroom without affecting their kids’ play space.


Building Up in Spokane’s South Hill: A homeowner on a tight infill lot added two bedrooms and a bath upstairs, preserving their garden and outdoor dining space.



Both projects started with the same question—but the right answer came down to lot, structure, and goals.

Ready to Explore Your Addition Options?

Let’s start with a conversation. We’ll help you understand what’s possible on your property—and how to get the most out of your investment.

📱 Call or text:509-890-0222

 📧 Email: info@pnwbuild.com

 🔗 www.pnwbuild.com/contact

The Building Company is a proud member of the National Association of Home Builders (NAHB) and the National Association of the Remodeling Industry (NARI). These affiliations reflect our commitment to professionalism, continuing education, and high industry standards.

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