Shop Construction Mistakes to Avoid

Building a shop—whether it’s for your tools, equipment, business, or hobbies—is an exciting investment. But over the years, I’ve seen how a few missteps in the planning or construction phase can turn a dream build into a frustrating experience. At Stimson Contracting, we’ve built hundreds of shops across Spokane and the Inland Northwest, and we’ve learned what works—and what doesn’t.

If you’re thinking about building a shop, don’t just jump in with a sketch and a budget. In this guide, I’ll walk you through the most common shop construction mistakes we’ve seen—and how to avoid them. With a little foresight, you can save time, money, and a lot of headaches.

Table of Contents

1. Choosing the Wrong Size

2. Underestimating Site Preparation Needs

3. Skipping a Future Expansion Plan

4. Using Inadequate Insulation or Ventilation

5. Improper Door and Window Placement

6. Not Pulling the Right Permits

7. Forgetting About Utilities and Access

8. Trying to Cut Corners on Contractors or Materials

9. Conclusion: Build It Right the First Time

1. Choosing the Wrong Size

It’s easy to focus on what you need now, but most shop owners eventually wish they’d gone bigger. Whether you’re storing equipment, running a business, or planning for future hobbies, extra space is rarely regretted.

We always recommend thinking 5–10 years ahead. A modest bump in square footage during design costs much less than an addition down the road.

2. Underestimating Site Preparation Needs

I can’t tell you how often site prep gets overlooked—and it’s one of the most critical parts of the process. Things like:

• Drainage

• Grading

• Soil stability

• Driveway access

can impact the longevity and functionality of your shop. Poor drainage or unstable ground can cause cracks, rot, or even structural issues over time. Always evaluate your land with a professional.

3. Skipping a Future Expansion Plan

Even if you don’t plan to expand right away, it pays to design with the future in mind. Leave space on your lot, install larger footings where needed, and consider how the roofline and layout would accommodate an add-on.

Planning ahead now saves time and cost later—and gives your building more long-term flexibility.

4. Using Inadequate Insulation or Ventilation

Especially in Spokane’s four-season climate, your shop needs to breathe—and stay comfortable. Without proper insulation or airflow, you could face:

• Condensation and mold

• Overheating in summer

• Freezing temps in winter

• Higher energy costs

We always recommend spray foam or batt insulation, plus ridge vents, gable vents, or even exhaust fans depending on the building use.

5. Improper Door and Window Placement

It might seem like a small detail, but poor placement of doors and windows can ruin your shop’s workflow. We often see issues like:

• Overhead doors blocked by shelving

• Doors placed too close to corners

• Not enough natural light

• Windows in hard-to-reach or unusable spots

We help clients walk through daily tasks and tool placement during the design phase to avoid these pain points.

6. Not Pulling the Right Permits

Trying to skip permitting is one of the fastest ways to get into trouble. Spokane County requires permits for most shop buildings—especially those with:

• Electrical or plumbing

• Large square footage

• Proximity to property lines

• Attached living quarters or business use

We handle all permitting for our clients so you stay compliant and avoid fines or rebuilds later.

7. Forgetting About Utilities and Access

If you need lighting, power tools, heat, or water in your shop, don’t forget to plan for:

• Electrical panel capacity

• Outlet placement

• Water and septic if adding plumbing

• Internet or security systems

• Vehicle access and parking

It’s much easier and more cost-effective to install infrastructure during the build than to retrofit later.

8. Trying to Cut Corners on Contractors or Materials

We get it—everyone wants to save money. But using subpar materials or inexperienced builders often leads to:

• Delays

• Structural problems

• High maintenance costs

• Unsafe or code-violating work

At Stimson Contracting, we pride ourselves on building high-quality, functional shops that last decades—with materials and craftsmanship you can count on.

9. Conclusion: Build It Right the First Time

A well-planned shop can be one of the most valuable structures on your property—but only if it’s built right. By avoiding these common mistakes, you can save yourself time, money, and frustration—and end up with a building that serves you well for years to come.

At Stimson Contracting, we’ve helped Spokane-area clients design and build custom shops that are practical, durable, and smartly planned. If you’re ready to start building, we’re here to help every step of the way—from site prep and design to permitting and construction.