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Home Addition Contractor in Hillsboro, Oregon

Expand your home with Hillsboro’s most trusted remodeling contractor.

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Does Your Hillsboro 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. 


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A Home Addition Contractor in Hillsboro Who Understands Your needs

Finding the right remodeling contractor to build an addition on your Hillsboro 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.

Meet with a Design Consultant Contractor Selection Guide

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    Proven Process


    Building an addition on your Hillsboro home doesn’t need to be difficult. We’ll help you navigate the challenges of remodeling using our 6 Step Design-Build Process


  • BudgetSheet

    Budgeting Process


    Work with through the design/build process understanding how costs relate to your project and project selections and features.  


  • Worker

    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. 


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    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. 


Hillsboro Neighborhoods

What’s special about home Additions in Hillsboro?

Many homes in Hillsboro, Oregon were developed in the 1970s-early 2000’s, although there is a mix of earlier houses that date back to city incorporation in the late 1800’s, and there is still some development happening today. When selecting a remodeling company to remodel your home in Hillsboro, you should look for a company that understands the common challenges with those types of homes and is familiar with the common types of remodeling projects.

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

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    Hazardous Materials


    Many Beaverton homes constructed in the 20th century contain hazardous materials like lead and asbestos. Removing these materials is a complex and expensive process. It’s vital to engage a professional remodeler with expertise in safely handling and disposing of these hazardous substances.


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    Outdated Layout & Design


    Many earlier homes in Happy Valley were designed with smaller kitchens smaller primary bathrooms that most people want today. common projects for us include adding a large kitchen that’s better connected to the rest of the living space or a primary suite that meets modern building standards.


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Most Trusted

Remodeling Company for Hillsboro Homeowners

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

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Types of Additions for Hillsboro 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.

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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. 

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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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Easy & Affordable

Financing For Additions in Hillsboro, Oregon

As a remodeling company that specializes in custom-designed home additions for Hillsboro 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 remodel 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 remodel.



  • 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.


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Top Rated

Home Addition contractor in Hillsboro, Oregon

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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.

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Awards & Acolades

8 Years On
Best of Houzz

BOH2023

National Association for the Remodeling Industry

Lamont Bros. - NARI 2023 CotY_Res Exterior Over $200k Regional Winner
Oregon Best Companies to Work for Award
National Association of the Remodeling Industry
Earth Advantage
HBA Home Builders Association

Design-Build Contractor for Home Additions in Hillsboro

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 Hillsboro 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 Hillsboro 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.


Meet with a Design Consultant

How to Get Started on Your Hillsboro Home Addition

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

Meet your remodeling designer

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 design options.

Free in home design consultation

Set Up an In-Home Consultation

A remodeling professional will meet with you in your home. At this meeting, you can show them around the home and discuss what’s possible in your home.

Professional remodeling designers

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.

Meet with a Design Consultant 6 Steps to a Successful Remodel

A Hillsboro Home Addition Contractor You Can Trust

Meet with a Design Consultant If…

Frequently Asked Questions

What is Lamont Bros.’ process for a home addition? Expand

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.

Can you keep the cost of my home addition within my budget? Expand

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.

How long does it take to build an addition? Expand

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.

How is Lamont Bros. different from other contractors? Expand

Lamont Bros. is a design-build firm, meaning we offer full-process remodeling services and oversee both the design and construction of a remodel. 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.

Is a home addition a good investment? Expand

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.