Room Addition Orange County: Room Additions & 2nd Story Additions

  • Extra bedrooms or guest suites
  • Larger kitchens or dining rooms
  • Home offices or playrooms
  • Master bedroom expansions

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Get My Free Room Addition Consultation (949) 749-4142

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Need more space in your home? Whether your family is growing or you just need more room to breathe, a custom room addition can give you the space you need—without having to move.


At Home Remodeling Huntington Beach, we specialize in room additions in Orange County, including single-room expansions and full second-story additions. We are a design build contractor, providing an integrated approach to both the design and construction phases of your project. Our comprehensive room addition services include home additions, second story additions, and more, ensuring your home gains the space and functionality you need. We proudly serve clients in Costa Mesa, Newport Beach, Mission Viejo, and San Clemente, bringing local expertise to every project. Our portfolio of completed projects demonstrates our experience and commitment to quality craftsmanship.


During your initial consultation, our team will discuss your budget and establish a clear payment schedule to ensure transparency and peace of mind throughout your project.

Introduction to Room Additions

Room additions are an excellent way to expand your living space and adapt your home to your changing needs.


  • In Orange County, CA, where available space is often at a premium, a room addition can provide the extra space you need for a growing family, aging parents, or simply to enhance your lifestyle.


  • Whether you’re looking to add a new room for a home office, an extra bedroom, or a comfortable suite for guests, working with an experienced room addition contractor ensures that your new space blends seamlessly with your existing structure.


  • Room additions not only give you the flexibility to create multiple rooms or a single spacious area, but they can also significantly increase the value of your home.


With the right contractor, you can transform your house into a more functional and inviting space without the hassle of moving.

Illustration of a Room Addition Orange County
Room addition contractor Orange County

Why Add a Room?


We help homeowners in Huntington Beach and beyond create:

  • Extra bedrooms or guest suites
  • Expanded kitchens or dining areas
  • Playrooms, home offices, or gyms
  • Attached in-law units or Accessory Dwelling Units (ADUs)


An additional room can serve as a guest suite, hobby space, or even a rental unit, enhancing both functionality and property value. Accessory dwelling units (ADUs) are designed as independent living spaces, often for aging parents or as rental opportunities, and must comply with specific city guidelines in Long Beach and Orange County.


All of our room additions are carefully planned to look and feel like a natural part of your home. We handle everything—plans, permits, construction, and clean-up.


Choosing the right company for your room addition or ADU project ensures a smooth process and high-quality results. We are dedicated to providing exceptional service throughout every stage of your project.

Types of Room Additions

When it comes to room additions, homeowners in Orange County have a variety of options to suit their specific needs and preferences. Popular choices include kitchen expansions, which create more room for cooking, dining, and entertaining; bathroom remodeling, which can turn an outdated or unused space into a luxurious retreat; and garage conversions, which transform underused garages into functional living areas such as home offices, gyms, or playrooms.


Each type of room addition comes with its own set of benefits, and the right choice depends on your lifestyle and goals. It’s important to work with a reputable contractor who understands local building codes and can guide you through the entire process, from initial design to the completion of your new room. With professional guidance, your room addition project will not only meet your specific needs but also enhance the overall comfort and value of your home.

Garage Conversion Orange County

Garage Conversions

Garage conversions are a cost-effective way to create additional living space in your Orange County home. Instead of letting your garage sit unused or cluttered, you can transform it into a versatile new room that fits your lifestyle—whether that’s a home office, gym, playroom, or guest suite.


Garage conversions are especially popular in areas where expanding outward isn’t possible due to lot size or zoning restrictions. By working with a reputable contractor, you can ensure that your garage conversion is completed to the highest standards, meets all local building codes, and provides great value for your investment.


This approach not only adds extra space but also increases the overall livability and value of your home.


Second-Story Additions: Build Up, Not Out

In Orange County, where lot sizes can be limited, second-story additions offer a smart solution for homeowners who want to maximize their living space without sacrificing their yard or outdoor areas. By building up instead of out, you can add a beautiful new room—such as a master suite, home office, or family room—that takes advantage of natural light and offers impressive views.


Second-story additions are especially popular for families who need extra space but want to stay in their existing home and neighborhood. With the expertise of a skilled contractor, your second-story addition will be designed to complement your home’s style and structure, providing the extra space you need while enhancing both functionality and curb appeal.


Running out of room on your lot? A second-story addition is a smart way to double your living space without changing your home’s footprint. Our team has years of experience building second-story room additions in Orange County. We’ll design the perfect layout and structure to give your home the space it needs while keeping it safe and stylish.


Common second-story additions include:

  • Full upstairs bedrooms and bathrooms
  • Upstairs laundry rooms
  • Home gyms or media rooms
  • Loft-style offices or guest spaces


A major benefit of second-story additions is the significant increase in square footage, which not only boosts your usable living area but can also add substantial value to your property.

Room Addition Huntington Beach
Costa Mesa Room Addition 2nd Story
2nd Story Room Addition Orange County

Other Remodeling Services To Consider Doing With Your Room Addition Project

When considering a room addition, it’s also an excellent opportunity to update your kitchen or bathroom, or do that other project that you may have in the back of your mind. Much like a room addition, a home remodel can provide a high return on investment, further increasing the value of your home and enhancing its overall appeal.


Our company has extensive experience handling a wide range of projects, including room addition projects, kitchen remodels, and ADUs, demonstrating our expertise and reliability across various home renovation needs.


At Home Remodeling Huntington Beach, we offer customers a complete range of kitchen remodeling services, from cabinet refinishing and countertop work to a complete remodel of the space. We also offer a comprehensive range of bathroom remodeling services, from updating fixtures and tile to a complete bathroom remodel.


By remodeling other rooms in conjunction with your room addition project, you can take advantage of getting all of the work done in one effort, from minimizing the disruptions to your family's lifestyle during construction to saving costs by getting multiple areas done in one visit by each tradesperson. Coordinating multiple jobs under one general contractor streamlines the process, saving both time and costs while ensuring all aspects of your projects are managed efficiently.


Our team of professionals will work with you to create a custom design that complements your room addition project and meets your unique needs. We start with a complimentary design consultation to help you envision your home remodel and addition, and our team will guide you through every step of the process.


Whether you wish to update your living room floor, add a new room, or completely transform your yard, our remodeling services are designed to enhance your Orange County home.


Let us help you with your next project, whether it's a room addition, kitchen remodel, or any other home improvement you have in mind.


Check out our blog for additional remodeling ideas and tips.

The Construction Process

The construction process for a room addition in Orange County begins with careful planning and design to ensure your new room meets your needs and complies with all local building codes.


After finalizing the design plans, your contractor will obtain the necessary permits and prepare the site for construction. Once construction begins, the project will move through several key stages, including

  • Laying the foundation
  • Framing
  • Installing electrical and plumbing systems
  • Completing the interior finishes such as drywall, flooring, and painting.


Throughout the entire project, a reputable contractor will manage every detail, coordinate daily cleanups to minimize disruption, and keep you informed at every step. With the right contractor overseeing the process, you can be confident that your new room will be completed efficiently, safely, and to the highest quality standards, resulting in a beautiful and functional addition to your home.

Reviewing Blueprint for Room Addition Orange County

Why Choose Home Remodeling Huntington Beach?


  • Our  zoning and regulation expertise
  • Experienced, insured, and licensed contractors
  • Transparent timelines and transparent pricing
  • Exceptional craftsmanship with positive homeowner endorsements


We take pride in being among 's most relied-on room addition contractors.



Our team of designers, engineers, and builders works closely with you at every step. We make sure your new room or second floor not only fits your needs but also looks like it was always part of your home.

Why Choose Home Remodeling Huntington Beach?


  • Our Huntington Beach zoning and regulation expertise


  • Experienced, insured, and licensed contractors


  • Transparent timelines and transparent pricing

  • Exceptional craftsmanship with positive homeowner endorsements


We take pride in being among Huntington Beach’s most relied-on room addition contractors.


Room addition Orange County with patio

Start Your Huntington Beach Room Addition Project Today

Ready to expand your living space? Let Home Remodeling Huntington Beach help you build a custom room addition that serves your purposes. Fill out the form below or call us now for a free consultation.

Contact us now to schedule a free consultation and let us turn your dream Room Addition into reality!