Expert Home Additions in Corvallis, OR

Helping Residents in Corvallis, Philomath, Albany, and Lebanon Make Home Additions

Need more room to live, work, or relax? Whether it’s a growing family, a new office, or your teenager’s garage band needing soundproof walls, we can help you build it. From small bump-outs to major second-story dormers, we specialize in adding extra space that feels like it was always part of your home.

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Full-Scale Home Addition Just the Way You Want

Get the best and the most budget-friendly home additions built with your comfort in mind. Whether you want more bedrooms, a workspace, or just a breathing room, we can help you design and build it stress-free.

Smart Space Planning

Build home additions that feel like a natural extension of your home. Our experts help you think through how the new area fits into your daily routine.

Honest & Clear Budgets

Know what your dream home addition will cost before we get to work. Our team provides you with a clear and detailed budget upfront.

Built for Your Needs

From quiet zones to creative work studios, we build each addition around how you live, not just how it looks. You’ll get space that’s both functional and personal.

Reliable Communication

From permits to punch lists, we keep you in the loop and on the same page. You don’t need to chase us or our partners down for updates.

Who We Build Home Additions For

If your family is growing, you're working remotely, or you just need more square footage, we’re here to create the space you need.

We’ve built additions for:

  • Homeowners adding extra bedrooms or family spaces

  • Remote workers needing private, insulated offices

  • Multi-generational families looking for in-law suites

  • Creatives wanting studios, workshops, or quiet retreats

  • Families planning ahead for aging in place

Whatever the reason, we’ll help you make it happen.

Types of Home Additions We Build

There’s no one specific home addition we do or don’t. We’ve helped Corvallis-area homeowners expand their homes in creative and functional ways. If you need it, we’ve probably built it.

Open kitchen and dining area with blue chairs around a round table with yellow napkins and a flower arrangement, light wood cabinetry, stainless steel appliances, and a tile backsplash, illuminated by ceiling lights and natural light from a window and skylights.

Room Additions (Conventional Additions)

Get full-scale additions to create new bedrooms, living rooms, or other large spaces in your existing layout. They are built to match the original structure in both design and function.

The image shows the upper portion of a house with a peaked roof and multiple windows, surrounded by tall green trees and foliage, with shadows cast on the house from the trees.

Bump-Out Additions

Build bump-out additions to expand a specific area, such as a kitchen, dining nook, or bathroom, without the cost of a whole new room. Bump-outs are great for adding a few extra square feet of usable space.

A house with a modern rustic design featuring wood and stone elements, set against a backdrop of snow-capped mountains and a partly cloudy sky, with a wooden fence in the foreground.

Second‑Story or Pop‑Top Addition

Build upward with a full second floor or dormer to create extra bedrooms or private retreats. This style of addition is an efficient way to add space when your lot size limits you.

Overhead view of a small outdoor patio with brown wooden flooring, metal chairs with striped cushions, a round table with potted flowers, and a railing with lush green plants, casting dappled shadows.

Garage Conversions and Over-Garage Additions

Convert garages into offices, gyms, or studios, or build a new living space above. It's a smart way to gain square footage without expanding your foundation.

A living room area with a red sofa in focus, a glass coffee table with decorative items, dark dining chairs around a round table, wall art, and a view into a room with a TV and a ceiling fan. The space has hardwood floors, light-colored walls, and decorative lighting.

Basement Conversions

Turn an unfinished or underused basement into a functional space like a guest suite, home theater, or family room. We handle insulation, egress, moisture control, and finishes.

Open-concept living room and kitchen with a brick fireplace, sliding glass door, colorful furniture including a green sofa and orange chair, wooden dining table with blue chairs, kitchen with large window, red and blue tiled backsplash, and skylights.

In-Law Suites

Add a private, self-contained space for aging parents or long-term guests. These suites feature comfort amenities such as private entrances, bathrooms, and easy access living.

A cozy living room with a brick fireplace and a fire burning, green and orange chairs, large windows showing a backyard with trees and flowers, and a dining area with blue chairs and a vase of multicolored flowers.

Sunrooms or 3-Season Room Additions

Enjoy natural light and scenic views with a sunroom or enclosed patio. These spaces are ideal for relaxing, entertaining, or extending your indoor-outdoor living experience.

A dining room with a black cabinet, wooden dining table, and chairs, beige walls, framed artwork, and a window with a blind.

Home Offices

We design quiet, focused workspaces with built-in storage, lighting, and sound control. Whether you work remotely or run a business, your home office will be both practical and comfortable.

Modern black and gold fireplace in open-concept living space with dining area and flowers.

Creative Spaces

Whether it’s a soundproof music room, an art studio, or a craft space, we build it to fit your passion. Everything from layout to lighting is designed around how you’ll use the space.

Our Home Addition Process

Living room with a green couch, orange chair, fireplace, and two windows showing a garden outside.
Two people sitting at a table having a conversation, with a speech bubble above the person on the right.

1. Consultation: We visit your home, discuss your needs, and assess the space for expansion.

Icon of a blueprint with a floor plan and a pencil.

2. Design & Planning: We create a plan tailored to your timeline, property, and goals, taking into account permits.

Icon of a check, receipt, and invoice with a pen marking a bill

3. Estimate: You’ll get a clear estimate with a breakdown of every cost and timeline.

Icon of a calendar with a clock in front of it.

4. Scheduling: Once you give the green light, we set your project schedule and prepare for construction.

Icon of a construction worker wearing a helmet, with a building and an arrow circling around him.

5. Construction: We manage the crew, keep the site clean, and stay on track through each stage.

Icon of a checklist with a ribbon award, symbolizing achievement or certification.

6. Final Check: We review the work with you before calling it complete.

How Much Do Home Additions Cost in Corvallis?

The cost of a home addition in Corvallis typically ranges from $100 to $300 per square foot, depending on the size, materials, and complexity.

  • Smaller bump-outs: $20,000–$50,000

  • Garage conversions: $30,000–$60,000

  • Second-story additions: $100,000+

Don’t worry, we’ll provide a detailed estimate after evaluating your property and goals.

Meet Our Happy Clients

  • Michael Boock

    ⭐️⭐️⭐️⭐️⭐️

    “Crowsfoot Carpentry did an outstanding job on our kitchen remodel. From start to finish, their communication was honest, straightforward, and clear. Their timing was impeccable—they met every deadline! Great bunch of guys and every subcontractor they brought in was top-notch, reflecting their commitment to quality and professionalism. We couldn’t be happier with the final result.”

  • Deanna Brooke

    ⭐️⭐️⭐️⭐️⭐️

    Our remodel project finished on time, on budget, and ended up better and more beautiful than we could have imagined. And the extra benefit of a great bunch of guys! We thank you and the whole crew for a great job and just a really great experience. Thank you, thank you, thank you.

  • Elisa D.

    ⭐️⭐️⭐️⭐️⭐️

    Frank and his team built our home from the ground up. He stuck it out with 3 years of planning with us and later the permitting process. We now have our dream home with the personal touch and attention that Frank and his crew provide. The project could not have been completed without them!

  • Jeff Rodgers

    ⭐️⭐️⭐️⭐️⭐️

    Crowsfoot Carpentry has done a number of projects for us ranging for building a wine cellar to a custom deck. They are extremely competent, friendly, and willing to take on adventurous projects. I would not hesitate to hire them for any remodeling or building project.

Helping Willamette Valley with Home Additions Since 2013

Crowsfoot Carpentry has been building better homes across Corvallis, Philomath, Albany, and Lebanon for over a decade. Our team has deep roots in the community and a long-standing reputation for quality work.

  • BBB Accredited 

  • NARI Member (National Association of the Remodeling Industry) 

  • Western Oregon Builders Association Member 

  • EPA RRP (Renovation, Repair, and Painting) Certified 

  • Licensed with the CCB 

  • Approved Builder with Oregon State Credit Union

Learn More About Us

FAQs About Home Additions

  • We'll help you explore all options based on your layout, property line, and goals.

  • In many cases, yes. We work in stages to limit disruption and maintain safety.

  • Yes, we either handle them in-house or coordinate with your designer and the local planning office.

  • It depends on the size and scope of your project. We’ll provide you with a timeline during the consultation.

  • We specialize in turning underused spaces into functional rooms. Tell us what you need, and we’ll help you build it.

Get That Extra Space You’ve Always Wanted

Need more room? We’ll help you create a home addition that works for your lifestyle and budget. Book your free consultation today and get expert advice with zero pressure.