Kirkland, WA Best Design Build Company
Maximize Your Property's Potential with Custom Additions & ADUs
At Eastside Builders Group, we specialize in creating high-quality home additions and Accessory Dwelling Units (ADUs) that enhance your lifestyle and boost property value. Whether you're looking to convert an underutilized garage into a stylish ADU, build a Detached ADU (DADU) in your backyard, or expand your living space with a seamless home addition, our expert team delivers innovative design and superior craftsmanship from concept to completion. ADUs and additions aren’t just about square footage—they’re smart, long-term investments. From multigenerational living to rental income opportunities, we design spaces that are fully functional, beautifully integrated, and tailored to your property. In cities like Kirkland, Bellevue, and Seattle, certain DADUs can even be individually metered and sold separately, adding major value to your home. With a deep understanding of local zoning codes and pre-approved city programs, we’ll guide you through every step—from feasibility and permitting to final construction. Whether your goal is passive income, guest accommodations, or simply more room to grow, Eastside Builders Group is here to bring your vision to life.
Second Story & Home Additions
Expand Up, Add Value – Maximize Your Home’s Footprint
Building a second-story addition is one of the most impactful ways to increase your home’s square footage without losing yard space. Whether you're adding bedrooms, a home office, or a new master suite, second-story additions significantly increase your home's resale value, especially in high-demand areas like Kirkland, WA.
On average, second-story additions cost between $200–$350 per square foot, with construction timelines typically ranging from 4 to 6 months, depending on design complexity and permitting.
Aside from adding usable living space, these additions boost property value, support multi-generational living, and offer a cost-effective alternative to moving into a larger home.
ADU Additions (Attached or Garage Conversions)
Smart Living Solutions That Add Space & Income
An Accessory Dwelling Unit (ADU) is a self-contained living space within or attached to your home—commonly built as garage conversions, basement apartments, or attached suites. Ideal for rental income, in-law accommodations, or guest quarters, an ADU offers homeowners incredible versatility and long-term financial benefits.
The average cost of an ADU ranges from $150,000 to $250,000, depending on size and location within the home. Construction typically takes 4 to 6 months, including design, permitting, and buildout.
In many areas, including Kirkland, Bellevue, and Seattle, ADUs are legally rentable, making them a great way to generate passive income or support family members while increasing overall property value and flexibility.
Bump-Out Additions
Bump-out additions are compact extensions that add a few extra feet to a targeted area of your home—most commonly the kitchen or primary bedroom. This small-scale solution can dramatically improve flow, functionality, and livability, without the full cost of a large addition.
On average, bump-outs cost between $40,000 and $85,000, with construction taking 2 to 3 months. Bump-outs are ideal for homeowners who need “just a little more space” without altering the entire home’s footprint.
Whether it’s a kitchen expansion for a larger island and extra cabinetry, or a master suite bump-out to add a walk-in closet or reading nook, this addition boosts both your daily comfort and resale value in a cost-effective way.
