
Building a custom home in Oregon? It’s an exciting journey, but it comes with a maze of regulations, paperwork, and legal requirements. One wrong move in the permitting process, and you might face frustrating delays or even hefty fines. This post is your trusted roadmap to navigating the permitting process in Oregon smoothly and confidently—saving you time, money, and headaches.
Understanding the Basics of Custom Home Permits in Oregon
Before a single nail is hammered or concrete is poured, you need to understand what permits are required and why they matter. In Oregon, a building permit is your official approval to begin construction legally. It ensures your custom home meets structural, safety, and environmental codes.
The state enforces the Oregon Residential Specialty Code (ORSC), which outlines how homes must be built. These regulations aren’t just red tape—they ensure that homes are structurally sound, energy-efficient, and safe for residents. Whether you’re building in Portland, Bend, Eugene, or a rural part of the state, you’ll have to adhere to ORSC and possibly local municipal regulations.
The main types of permits you may need include:
- Building Permits: The core permit covering structure and design.
- Mechanical Permits: For heating, ventilation, and air conditioning (HVAC) systems.
- Electrical Permits: Required for any new or modified electrical wiring.
- Plumbing Permits: Cover water supply lines, waste disposal systems, and fixtures.
- Grading and Excavation Permits: Needed if altering the land significantly.
- Septic Permits: Only necessary if you’re not connecting to a municipal sewer.
If your lot is in an environmentally sensitive area (like a floodplain or near protected wildlife), additional land-use or environmental permits may also be required.
Zoning and Land Use Approval: First Step Before Any Permit
You can’t just buy land in Oregon and start building whatever you want. Zoning laws regulate land use to ensure organized development and protect the character of neighborhoods. Every city and county has a zoning code that outlines what types of buildings are allowed and where.
Before applying for a building permit, you’ll need to obtain zoning or land use approval. This process confirms your design complies with local zoning ordinances like:
- Setback requirements (distance from property lines)
- Maximum building height
- Allowed uses (single-family vs. multi-family homes)
- Lot coverage limits
In some cases, if your design doesn’t meet zoning rules, you may apply for a variance or conditional use permit. However, this can delay the process significantly and isn’t guaranteed approval.
It’s always smart to check with your city or county planning department before starting your custom home design. Many offer pre-application meetings to help homeowners address zoning concerns early in the design process.

The Application Process: Step-by-Step Overview
Once your land use is approved and your plans are ready, you can submit your building permit application. Here’s a simplified breakdown of how the process typically goes in Oregon:
Step 1: Prepare Your Construction Plans
You’ll need detailed architectural and engineering drawings that meet state and local codes. These plans typically include:
- Site plans showing property boundaries and building placement.
- Floor plans and elevations
- Structural plans
- Mechanical, plumbing, and electrical layouts
- Energy compliance forms
Step 2: Submit Your Application
You can apply online in most counties or person at the local building department. Make sure to include:
- Completed application forms
- Two or more sets of plans
- Application fees (varies by city/county and project size)
- Engineering calculations (for structures with complex framing or unusual loads)
Step 3: Plan Review
Your plans are reviewed by building officials to ensure they meet all relevant codes. This can take anywhere from 2 to 6 weeks, depending on the jurisdiction and complexity of the home.
If there are issues with the plans, you’ll receive a “correction letter” requesting modifications. Responding quickly to these comments helps avoid delays.
Step 4: Permit Issuance
Once the plans are approved, you’ll receive your permits. You can now begin construction—but only by the approved documents.
Step 5: Scheduling Inspections
As you build, you’ll need to call for inspections at various stages—foundation, framing, electrical, plumbing, and final. Passing these inspections ensures you stay compliant and can legally occupy your home.
Timelines and Delays: What to Expect
Most homeowners are surprised by how long the permitting process can take. Here’s a rough idea:
- Zoning Review: 2–4 weeks
- Building Permit Review: 2–6 weeks
- Resubmissions & Re-Reviews: Add 1–3 weeks for each cycle
- Environmental Reviews or Variances: May take several months
A straightforward custom home in an urban area can often be permitted in 2–3 months. But if you’re in a rural location or have zoning or environmental issues, it can take 6 months or longer.
To avoid delays:
- Hire experienced architects and engineers familiar with Oregon’s codes.
- Review city/county guidelines before submitting.
- Don’t start building until your permit is issued.
- Respond to plan correction notices promptly.

Costs and Fees Associated with Custom Home Permits
Let’s talk money—permits aren’t free, and costs can vary significantly. Permit fees are typically based on the square footage and estimated value of your project.
Typical Fees May Include:
- Building Permit Fee: Often $1,000 to $4,000 for a custom home
- Plan Review Fee: Usually 65% of the building permit fee
- System Development Charges (SDCs): These are impact fees for sewer, water, parks, and roads. Can add $10,000 to $30,000+ depending on location.
- Mechanical, Plumbing, Electrical Permits: $500 to $2,000 total
- Other Fees: Land use application fees, engineering review fees, and environmental assessments
Pro Tip:
Always get a written estimate from your local jurisdiction. Some cities (like Portland or Eugene) have online calculators where you can estimate fees before you apply.
Conclusion
Building a custom home in Oregon is a rewarding endeavor—but it’s not without its regulatory hurdles. Understanding the permitting process is crucial to avoiding delays, legal issues, and unexpected costs. From zoning approvals to final inspections, every step is interconnected and demands attention to detail.
Whether you’re building in urban Portland or a secluded spot in Central Oregon, success hinges on careful planning and expert execution. That’s where Kalen Development comes in—bringing years of local experience, trusted partnerships with permitting authorities, and a passion for turning your dream home into a reality.
Don’t let paperwork or red tape derail your dream. Trust Kalen Development to guide you through the Oregon permitting process with confidence.
FAQs
1. How long does it take to get a building permit for a custom home in Oregon?
It usually takes between 2 and 6 weeks for permit review, depending on complexity and jurisdiction. Add more time if land use reviews or special permits are needed.
2. Can I start building before my permit is approved in Oregon?
No. Starting without a permit is illegal and can result in fines, stop-work orders, and expensive delays.
3. What’s included in Oregon’s System Development Charges (SDCs)?
SDCs typically include fees for roads, water, sewer, stormwater, and parks—ranging from $10,000 to $30,000+ depending on location.
4. Do I need a permit for building in a rural area of Oregon?
Yes. Even in rural counties, you’ll need permits and inspections, although zoning and environmental restrictions may differ from city regulations.
5. How can Kalen Development help with my custom home project in Oregon?
Kalen Development manages your entire build process—from land analysis and design to permit handling, construction, and final inspections—ensuring compliance and peace of mind.