Home Addition Plans

I provide professional home addition plans for homeowners looking to expand their living space with clarity, code compliance, and smooth permitting. Serving Portland, Oregon & SW Washington, all plans are designed to be practical, buildable, and permit-ready.

Whether you’re adding a new bedroom, expanding a kitchen, building a second story, or extending your home footprint, I prepare clear architectural plans that meet local jurisdiction requirements and contractor needs. Early-stage projects often begin with

residential architectural planning services

to confirm feasibility before drafting begins.

What Are Home Addition Plans?

Home addition plans translate your ideas into detailed architectural drawings required for permits and construction. These plans ensure that your addition integrates properly with the existing structure while complying with zoning and building codes.

Well-prepared addition plans help avoid redesigns, construction delays, and permit rejections. Once planning is complete, projects move forward into

permit-ready drafting
.

Types of Home Additions I Plan

• Single-story home additions
• Second-story additions
• Kitchen and living room expansions
• Bedroom and bathroom additions
• Primary suite additions
• Structural expansions and remodels

What’s Included in Home Addition Plans

Each home addition project is unique, but plans typically include:

• Existing and proposed floor plans
• Exterior elevations
• Building sections
• Site plan showing addition footprint
• Door and window schedules
• Construction notes for permitting
• Coordination with structural engineering (if required)

Planning & Code Compliance

Home additions must comply with zoning setbacks, height limits, lot coverage, and building codes. I review applicable requirements early in the process to help ensure:

• Zoning compliance
• Efficient permit review
• Buildable construction drawings

Projects involving accessory dwelling units or conversions may also require additional review. For those scopes, see

ADU planning and permit services
.

When Is a Licensed Architect Required?

Many residential home additions in Oregon and Washington can be legally planned and drafted without a licensed architect, depending on size, scope, and complexity.

However, certain projects may require a licensed architect or engineer, such as:

• Large or multi-story additions
• Complex structural changes
• Specific jurisdiction requirements

When required, I coordinate with licensed professionals to ensure your plans meet all permitting requirements.

Service Area & Delivery

Home addition plans are available for clients throughout Portland, Oregon & SW Washington, including Vancouver and surrounding areas. Services are provided 100% remotely, with plans delivered digitally and ready for permit submission.

Get Started with Home Addition Plans