Oregon & Washington · CCB #250142
(503) 710-2279 — Free Estimate
Home Additions Contractor · CCB #250142

HOME ADDITIONS IN
OREGON & WASHINGTON

Room additions, second-story expansions, master suites, and garage additions. Seamless integration. Built to last. Licensed CCB #250142.

CCB
#250142 Licensed
OR & WA
Both States
Seamless Additions
Free
Estimates
Expand Your Home

HOME ADDITION CONTRACTOR IN OREGON

Add the space you need — without moving. Mira Contracting builds seamless additions that look like they were always there.

Growing families, work-from-home needs, aging parents moving in — there are dozens of reasons Oregon homeowners choose to add on rather than move out. Mira Contracting LLC (CCB #250142) has completed home additions in Woodburn, Sherwood, and throughout the Willamette Valley, and we're ready to build yours.

Our Woodburn addition project extended the full length of the existing home — seamlessly blending new framing with the original structure, matching the siding profile and roofline exactly. Our Sherwood two-story addition added a full second floor with open living space, a custom staircase, and perfectly matched exterior finishes.

Every addition we build starts with careful planning: permit applications, structural engineering review, and a clear scope of work so you know exactly what you're getting. We handle all permits, coordinate with inspectors, and deliver a finished addition that integrates perfectly with your existing home.

Want to add living space without a full addition? Check out our ADU page. Need structural work inside your home? See our remodeling page.

Room Additions

Single-room additions for bedrooms, home offices, family rooms, and more — integrated seamlessly with your home.

Second-Story Additions

Full second-story construction with structural reinforcement, staircase, and complete interior finishes.

Master Suite Additions

Luxury master suite expansions with walk-in closets, ensuite bathrooms, and custom finishes.

Garage Additions

Attached and detached garage additions. Single-car, two-car, and oversized garage builds in Oregon.

Addition Types

TYPES OF HOME ADDITIONS WE BUILD

Single-Room Additions

Bedrooms, family rooms, home offices, mudrooms — any single-room expansion built to match your existing home's style and materials.

Second-Story Additions

Double your home's square footage without expanding your footprint. Full second-floor additions including structural engineering, framing, roofing, and complete finishes.

Master Suite Expansions

Large primary bedrooms with walk-in closets, sitting areas, and spa-style ensuite bathrooms. Custom built to your specifications.

Sunrooms & Porches

Covered porches, screened porches, sunrooms, and four-season rooms that extend your living space into the outdoors.

Garage Additions

Attached and detached garage additions — single-car to oversized. Custom sizes, storage lofts, and workshop layouts available.

Full-Length Additions

Extend the entire side or rear of your home. Our Woodburn project added a full-length addition that perfectly matched the original structure.

Completed Additions

HOME ADDITION PORTFOLIO

Full-Length Side Addition

Extended the full length of the house — new living space, seamless integration with existing structure and finishes.

Woodburn, OR

Two-Story Addition

Complete second-floor addition with custom staircase, open living area, and matching exterior roofline.

Sherwood, OR

Custom ADU Addition

Attached ADU addition with separate entrance, full kitchen and bath, designed as an income unit.

Beaverton, OR
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Service Area

HOME ADDITIONS ACROSS OREGON

Portland, OR Salem, OR Vancouver, WA Woodburn, OR Sherwood, OR Beaverton, OR West Linn, OR Hillsboro, OR Silverton, OR View All Areas →
FAQ

HOME ADDITION FAQ

What types of home additions does Mira Contracting build?

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Room additions, second-story additions, master suite expansions, garage additions, sunrooms, and full-length side or rear additions throughout Oregon and Washington.

How much does a home addition cost in Oregon?

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A basic room addition typically starts at $50,000-$80,000. A second-story addition can range from $150,000-$400,000+. Call us for a free estimate specific to your home and location.

Do you handle permits for home additions?

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Yes — all permits, structural engineering coordination, and inspections are handled by Mira Contracting for every home addition project.

Will the addition match my existing home?

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Absolutely. We match siding profiles, rooflines, window styles, and interior finishes to ensure the addition looks like it was always part of the original home.

How long does a home addition take?

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A single-room addition: 2-4 months. A second-story addition: 4-8 months. Timelines depend on scope, permit timing, and site conditions.

How do I get started?

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Call (503) 710-2279 or use our free estimate form. We visit your home and provide a detailed written proposal. No obligation.

NEED MORE SPACE?

Free home addition estimate anywhere in Oregon or Washington. Licensed CCB #250142. Call today.

Get a Free Estimate (503) 710-2279
(503) 710-2279 @miracontractingllc