Owner-Led Projects

One of our owners launches every addition, then a dedicated site lead oversees your project through completion. No disappearing contractors.

Home Additions Eugene, Oregon | Kingsley Construction

Expand your home with craftsmanship trusted in Lane County for over 20 years. From master suites to second stories, we build additions that seamlessly blend with your existing home.

Built to The Kingsley Standard

Your home is your biggest investment. When it's time to expand, you need a contractor who treats it like their own. For over two decades, Eugene-area families have trusted Kingsley Construction to add space without compromise—no MDF shortcuts, no vanishing crews, no surprises.

Every addition we build is designed to match your home's existing architecture and exceed Oregon building codes. Our in-house teams handle framing, finish work, and coordination with licensed electricians and plumbers. You get one point of contact, clear timelines, and a 5-year workmanship warranty.

Whether you're adding a master suite for growing teens, a home office for remote work, or a great room for family gatherings, we build additions that increase comfort today and resale value tomorrow.

Our Home Addition Process

Timeline Format (5 Steps):

1. Consultation & Vision Planning

We meet at your home to discuss your goals, measure existing spaces, and explore design possibilities that fit your budget.

2. Design & Engineering

Our team creates detailed plans and coordinates with structural engineers to ensure your addition integrates seamlessly with your home's foundation and roofline.

3. Permits & Approvals

We handle all Lane County permits, inspections, and HOA approvals so you don't have to navigate the bureaucracy.

4. Construction & Quality Control

One of our owners launches your project, then a dedicated site lead oversees daily work. Our in-house crews maintain clean, safe job sites and communicate progress every step of the way.

5. Final Walkthrough & Warranty

We conduct a detailed walkthrough, address any final touches, and provide your 5-year workmanship warranty documentation.

Home Addition Services in Eugene

Second Story Additions

Maximize your lot without expanding your footprint. Perfect for hillside properties or smaller lots where ground-level space is limited.

Master Suite Additions

Create your private retreat with a spacious bedroom, walk-in closet, and spa-like bathroom built to your exact specifications.

Family Bedroom Additions

Growing family? Add bedrooms without moving. We design additions that flow naturally with your home's existing layout.

Home Office Additions

Build dedicated workspace separate from daily household activity. Ideal for remote workers who need professional, quiet environments.

Great Room Expansions

Open up your living space with vaulted ceilings, natural light, and room for the whole family to gather comfortably.

Kitchen Extensions

Expand cramped kitchens into cook-and-entertain spaces with room for islands, dining areas, and modern appliances.

In-Law Quarters

Add independent living spaces for aging parents or adult children—complete with kitchenettes, bathrooms, and private entrances.

Featured Project: 610 Sq Ft Master Suite Addition

Project Story:

When the Baron family's 73-year-old Eugene home felt too small for their growing needs, they turned to Kingsley Construction to add a 610-square-foot addition.

The Challenge:

Integrate new construction with vintage architecture so seamlessly that neighbors couldn't tell where the original home ended and the addition began.

Our Solution:

We designed and built a master suite, dining room, and laundry room that matched the home's original craftsmanship, roofline, and exterior materials. Structural engineering ensured the addition's foundation tied into the existing structure without compromising integrity.

The Result:

"If you drove by our home, you would never know it was an addition. They are easy to work with; honest, hardworking and knowledgeable." – Jolene Baron