Home Addition Contractor in Springfield, OR
Keystone Construction and Restoration LLC builds permitted room additions, second stories, and accessory dwelling units for homeowners in Springfield, Eugene, and surrounding Lane, Linn, and Benton County communities, adding usable square footage that matches the look and structure of your existing home.
Room Additions, Second Stories, and In-Law Units Built to Match Your Home.
Every addition we build is designed to blend with your home's existing structure, not stand out from it. We frame each project to current Oregon building code, so the space you gain is as sound as the home it's attached to.
Room Additions Add Space Without Moving.
We build bedroom, family room, and home office additions right onto your existing footprint. Each one is framed to tie into your current roofline and siding, so the new space looks like it's always been there.
Second Story Additions Expand Living Space Up, Not Out.
Adding a second floor over your existing single story home means reinforcing the foundation and load bearing walls before framing ever begins. We handle that structural work first, so the new floor stands on a solid base.
Accessory Dwelling Units Create a Separate Living Space on Your Lot.
Whether you want rental income, space for aging parents, or a place for adult children to land, we build detached and attached ADUs sized and permitted under Oregon's ADU rules.
The Permitting and Code-Compliance Process for Home Additions.
Every addition we build goes through the same permitting sequence before a hammer swings, so you know what to expect from the first visit to the final walkthrough.
Step One: On-Site Assessment and Design Consultation.
Your Project Manager visits your property to assess structural feasibility, talk through your goals, and sketch a rough layout before any drawings are ordered.
Step Two: Engineered Drawings and Permit Submission.
We prepare structural drawings and submit them to your local building department for review. Timelines depend on that jurisdiction's current permit queue, so we keep you posted along the way.
Step Three: Foundation, Framing, and Inspections.
Once permits are in hand, we move through foundation or footing work, then framing tied into your existing structure. Required inspections happen at each stage before work continues.
Step Four: Final Inspection and Walkthrough.
After the final building inspection closes out the permit, we walk the finished addition with you before our crew leaves the site.
Common Questions About Home Additions in Springfield, Oregon.
Do I need a permit to add a room onto my house?
Yes, nearly all structural additions in Oregon require a building permit. Keystone Construction and Restoration LLC handles the engineered drawings and permit submission for you, so you don't have to navigate the building department on your own.
How do you know if my house can structurally support a second story?
Feasibility depends on your existing foundation, framing, and load bearing walls. We assess all of this on-site during the initial consultation, before any design work is priced or drawn, so you know where you stand early.
What makes one home addition cost more than another?
Cost drivers include foundation type, roofline complexity, whether plumbing or electrical service needs to be extended, and the finish level you choose. We walk through these factors with you before finalizing a design.
How long does a typical home addition take from permit to completion?
Timelines vary with permit review time in your specific jurisdiction and the scope of the addition. Once your design and permit are finalized, we give you a firm schedule so you know what to expect.
Start Planning Your Home Addition Today.
We offer a free estimate and an in-person assessment for every home addition project we take on. We work throughout Springfield, Eugene and Lane, Linn, and Benton Counties, and we're happy to talk through your plans before you commit to anything.