second story addition under construction

Home Addition Contractor in Wilsonville, OR

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Does Your Wilsonville Home Have any of These Problems?

  • Your home no longer has enough room for your growing family.
  • You want additional space for a new hobby or activity you enjoy.
  • The value of your home is limited because of its low square footage. 
  • There isn’t enough office space for you to work from home.
  • You don’t have enough room to entertain guests the way you want.
  • You want your home to be able to serve as a multi-general living space.

A Home Addition Contractor in Wilsonville Who Gets You

Finding the right contractor to build an addition on your Wilsonville home can be a challenge. It’s important to thoroughly vet and interview your options before deciding who to hire.

To ensure that you find a contractor that meets your needs and budget expectations, download our free 3-Step Guide to Choosing A Remodeling Contractor.

Whether you decide to hire our team at Lamont Bros. or another local remodeler, you can use this helpful guide to be confident knowing you have your bases covered.

Proven Process

Building an addition on your Wilsonville home doesn’t need to be difficult. We’ll help you navigate the challenges of remodeling using our6 Step Design-Build Process

Budgeting Accuracy

Our proprietary budgeting system helps you avoid unwanted surprise costs, with less than 5% variance from initial budget to final price.

Master Craftsmanship

Rest assured knowing that your home addition is in good hands. We assign a dedicated remodeling team to each project, lead by one of our experienced master carpenters. 

Extended Warranty

All remodeling contractors in Oregon are require by law to offer a minimum 1-year warranty. At Lamont Bros., we offer a 3-year warranty on all of our products and installations. 

What’s Special About Home Additions in Wilsonville?

Wilsonville, Oregon boasts a variety of architectural styles and development eras, from expansive estates to neighborhood developments like Charbonneau. When planning an addition in Wilsonville, it’s crucial to work with a remodeling company that understands the unique challenges and has expertise in this type of project.

Common Remodeling Challenges for Homes in Wilsonville, Oregon May Include:

Optimizing Layout & Flow

Many Wilsonville homes were designed with separate kitchens that may not align with modern preferences. Improve the flow and integration of your kitchen by adding an addition that will significantly increase space.

Hazardous Material Containment

As with many older homes, Wilsonville houses may contain hazardous materials like lead and asbestos. Prioritize safety by selecting a remodeling company experienced in their proper removal, ensuring a healthy living environment for your family.

Improving Energy Efficiency

Make your addition energy-efficient by upgrading windows, doors, insulation, and heating/cooling systems. These improvements enhance comfort and result in long-term energy savings. When you are doing an addition is the time to look at these.

Enhancing Large Estates

If you own an expansive estate in Wilsonville, ensure you are working with a design/build firm that understands both the original design intent of the home’s architect and your needed improvements to ensure that the addition fits well with the architectural style of your home.

Oregon City Addition Before
Oregon City Addition After

Remodeling Company for Wilsonville Homeowners

Don’t take our word for it. Hear from real homeowners just like you about their remodeling experience with Lamont Bros.

Types of Additions for Wilsonville Homes

At Lamont Bros., we understand that your needs as a homeowner are at the heart of any home addition project. That’s why we offer a range of options to ensure that the structure and design of your addition perfectly align with your individual requirements.

Whether you’re looking for a ground-level extension to accommodate an extra bedroom or a second-story addition to double your home’s square footage, we have you covered.  With our personalized design approach, we prioritize your preferences and design style, ensuring that the final result is a home addition tailored to you.

Single Story Addition

Often considered the simplest type of addition to build, a single-story addition is a ground-level structure built on the side of the home.

Single-story additions are often used to expand shared living space, such as a family room or kitchen. It’s also a great option for home offices and living spaces for people with mobility restrictions.

Challenges may include blending the new addition with the existing architecture and ensuring proper foundation support. A single-story addition is a popular option for homes on large properties, but can be more challenging for homes on small lots due to setback restrictions.

Second Story Addition

Rather than extend the home out, a second-story addition expands your home upwards. 

Adding a second story to your home can maximize living space without expanding the footprint. These are esspeically beneficial on small lots and can easily provide additional bedrooms, bathrooms, bonus space or a master suite.

The primary challenges normally include structural considerations. You often have to significantly reinforce the existing framing, shear panels and foundation in order to properly support the addition. Working with an engineer who is experienced in these types of additions is essential. 

Two Story Addition

A two-story addition is frequently the most cost-effective choice per square foot. This approach capitalizes on shared construction costs by utilizing existing foundation and roof structures for both levels.

It’s a space-efficient solution that offers versatility for expanding living areas, adding bedrooms, or setting up a home office while keeping your home’s footprint in check for smaller lots. 

These additions are best for homes that already have two stories, but occasionally they can be designed as an addition to a single story home. 

Basement Addition

Basement additions tend to be last on the list due to their considerable cost, but are viable options when expanding up or out isn’t really an option. A basement addition involves raising the house, removing the foundation, excavating the soil (often deeper), and establishing a new foundation. An alternate approach is to leave the house on the existing foundation and excavate deeper in an area. 

Basement additions become a compelling option when the original foundation, particularly those from Oregon’s early 19th century, is compromised due to a poor concrete mix or other reasons. There are a lot of complexities in the design and execution of these projects so working with a firm that is experienced with them will help prevent surprises and cost escalation. 

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Financing For Additions in Wilsonville, Oregon

As a remodeling company that specializes in custom-designed home additions for Wilsonville homeowners, our goal isn’t to be the cheapest option.

Rather, we strive to balance high-quality craftsmanship with an unforgettable remodeling experience, all while remaining reasonably affordable for the average homeowner.

We work with our clients to help them secure financing through any of the following options:

Home Equity Financing

Access equity in your home to build an addition without losing your interest rate on your primary mortgage.

Home Renovation Loan

Work with our home lending partners for a loan that allows you to borrow against the full value of your completed home addition.

Unsecured Gap Financing

We provide personal loans up to $200,000 through gap lenders. These loans have terms up to 12 years and higher interest rates.

Home Addition Contractor in Wilsonville, Oregon


Over 400 reviews averaging 4.5 stars on Google, Angi, Yelp, Houzz, and Facebook. Check out what real clients are saying about Lamont Bros’ award-winning remodeling services.

Awards & Acolades


8 Years On
Best of Houzz

NARI 2023 CotY_Res Exterior Over $200k_Regional Winner_Color

National Association for
the Remodeling Industry

Oregon Best Companies to Work for Award

Design-Build Contractor for Home Additions in Wilsonville

At Lamont Bros., our mission is to change the lives of homeowners by helping them expand their homes with custom home additions built just for them. However, we also recognize that not every home addition project is the right fit for our team. Here is how to tell if Lamont Bros. is or isn’t a good fit for your home addition project.

Lamont Bros. may not be a good fit for your Wilsonville home addition if…

You want to hire the cheapest contractor.

You prefer to design the project as it is being built.

You plan to do most of the work yourself.

You want to begin construction immediately.

You want to assemble your own remodeling team.

Contact the Lamont Bros. team about your Wilsonville home addition if…

You prefer a balance of cost, quality, and experience.

You understand the value in thorough design plans.

You value high quality craftsmanship.

You want to take the time to carefully plan your remodel.

You want a team that works together to guide you.

How to Get Started On Your Wilsonville Home Addition

Follow these 3 simple steps to begin designing the home of your dreams.

1. Schedule An Initial Video Call

Set up a meeting with a member of our team. We’ll discuss your expectations for your home addition and help you explore your options for remodeling.

2. Set Up an In-Home Consultation

A remodeling professional will meet with you in your home. At this meeting, you can show your designer around the home and discuss potential plans for the addition.

3. Start Designing Your Home Addition

Once your design team understands your vision and expectations, you and your team will begin designing your home addition together.

Frequently Asked Questions

As a design-build firm, we work with homeowners to thoroughly plan out their home addition project before moving them to construction. Read our Process Page to learn more about the design-build experience.

Absolutely. At Lamont Bros., we’re committed to keeping you in charge of the cost of your remodel. One major benefit of the design-build process is that you’ll know exactly how much your remodel will cost before it ever begins construction.

You should think about the timeline for both the design process and the construction process.

It depends primarily on the scope of the project. An average home addition takes about 14 weeks to complete, but your may take more or less time depending on the complexity. Check out this article to understand more about home addition timelines.

Lamont Bros. is a design-build firm, meaning we offer full-process remodeling services and oversee both the design and construction of a home addition. Design-build firms are but one of many types of contractors available to you.

To ensure that you’re able to hire a contractor who meets all of your home addition expectations, check out our 3-Step Guide to Choosing a Remodeling Contractor.

When designed well and kept to a reasonable budget, an addition can be a great investment in the value of your home and the quality of your life while you live there. Market data suggests that home improvement projects can add up to 80% of their cost back to the home’s value upon completion.