Interior
Smart Design That Starts Before the Build
At G-Form Design, we specialize in residential building design that sets the foundation for successful remodels, additions, and custom homes throughout Seattle. Whether you’re expanding your home, converting a basement, or designing an ADU, our team delivers thoughtful, code-compliant plans tailored to your lifestyle. We understand Seattle zoning, lot shapes, and structural nuances—and we design with those in mind.
Explore our core building design services below. Each section provides an overview and links to a dedicated service page with more detail.
Building Design That Brings Vision to Life
Smart design starts long before the build. As trusted Seattle building designers, we help homeowners and developers plan beautiful, functional spaces that are ready for real-world construction. Whether you're designing an ADU, opening up a layout, or adding a new level to your home, our team creates floor plans that balance creativity with code compliance.
We bring hands-on experience in Seattle’s most common design scenarios: sloped lots, narrow footprints, historic preservation, and zoning constraints. Every plan is tailored to your goals, budget, and property—not pulled from a template.
Our services include open concept layouts, space planning, drafting, ADU design, home addition planning, and small structure conversions like basement and garage remodels. We partner with local engineers and contractors to ensure your plans are not just inspiring, but also buildable.
From the first sketch to permit-ready plans, our team combines architectural understanding with interior design sensibility. The result is a smarter foundation for any remodel or new build.
If you're ready to shape your home the right way from the start, we can help.
Transform Your Kitchen with Seattle’s Premier Interior Designer
Creating stunning spaces tailored to your unique taste.
Open Concept Floor Plan Design
Transform cramped or outdated interiors with an open concept layout. We reimagine existing structures to improve natural flow, lighting, and spatial use while preserving key structural supports. Especially common in older Seattle homes, this service often involves removing or reconfiguring walls to enhance how the space feels and functions. [Learn more about Open Concept Floor Plan Design →]
Basement Remodel Planning & Design
Make the most of your underutilized square footage. Our basement plans help you convert your space into a livable suite, entertainment zone, office, or guest quarters—always aligned with code and airflow requirements. We’ll work with your contractor or permit path to ensure proper layout and egress. [See full Basement Remodel Planning Services →]
Accessory Dwelling Unit (ADU) Floor Plans
We create ADU plans that maximize space while remaining legal under Seattle’s strict guidelines. Whether detached or garage conversions, our designs are permit-ready and tailored for renters, guests, or extended family. Expect optimized kitchens, storage, and separation from the main residence. [View our ADU Design Services →]
Tiny Home Space Optimization & Planning
Living small doesn’t mean sacrificing comfort. Our tiny home design services are built around intelligent use of vertical and horizontal space, smart storage, and multipurpose layouts. Perfect for backyards, DADUs, or mobile units. [Explore Tiny Home Design Options →]
Home Addition Design (Second Floor / Room Extensions)
Whether you’re adding a second story or expanding outward, we design additions that integrate naturally with your existing structure. Our work ensures flow, proportion, and load considerations are respected—while delivering more usable space. [Learn more about our Home Addition Plans →]
Condo Renovation Planning & Layout Redesign
Small footprint? Big opportunity. We reconfigure condo layouts to maximize light, functionality, and resale value. Our team accounts for plumbing stacks, shared walls, and HOA limitations when designing layouts that improve day-to-day livability. [See our Condo Layout Services →]
Seattle Craftsman Home Reconfiguration Plans
Preserve character while improving flow. We specialize in updating historic Seattle homes with modern layouts that still honor the charm. Expect strategic wall adjustments, improved transitions, and thoughtful restoration. [View Craftsman Reconfiguration Services →]
Condo Renovation Planning & Layout Redesign
Small footprint? Big opportunity. We reconfigure condo layouts to maximize light, functionality, and resale value. Our team accounts for plumbing stacks, shared walls, and HOA limitations when designing layouts that improve day-to-day livability. [See our Condo Layout Services →]
Permit-Ready Drafting & Building Layouts
Already have a vision? We’ll turn it into clear, accurate drafting sets for submission and construction. Our drawings are formatted for builder coordination and permitting in Seattle and King County. [Review our Drafting Services →]
Garage-to-Living Space Conversion Design
Convert existing garages into fully functional living areas with our smart planning and design. Whether it's a home office, guest suite, or studio rental, we create layouts that make the most of what you’ve already got. [See Garage Conversion Design Options →]
Zoning-Compliant Residential Building Plans
We design within the limits—so your plans get approved faster. Our zoning-aware designs consider setback requirements, lot coverage, height restrictions, and other Seattle code nuances from day one. [Explore Zoning-Compliant Plan Services →]
Looking for deeper details or ready to start your project?
Click any of the above to explore further, or book a consultation to speak with our team directly.
[Book a Consultation] [Contact Us] [See All Services]
TESTIMONALS
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Frequently Asked Questions
How do you determine the design style that suits me?
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What is the typical timeline for an interior design project?
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How involved will I be in the design process?
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Do you work with specific budgets or cost ranges?
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Can you provide recommendations for contractors and suppliers?
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What sets your interior design services apart from others?
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Contact Us
(253) 517-0480
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