Home Additions & Remodel Drafting
Additions and remodels live or die on one thing: how well the new drawings match the house that's already standing. We start with an accurate as-built, draft your addition or remodel to fit the existing structure and roofline, and coordinate the whole set to local code so it moves through permit review without rework.
What This Service Is and Who It's For
Home additions and remodels are a different drafting problem than new construction. There's already a structure on the lot, and every new line has to reconcile with it: existing framing, existing rooflines, existing utility runs, existing setbacks. Get that reconciliation wrong and you end up with a plan set that looks fine on paper but doesn't match reality, which is where permit reviewers send projects back and contractors run into field surprises.
This service is built for homeowners planning a room addition, second story, kitchen or bathroom remodel, garage conversion, or structural renovation, and for builders and contractors who need a reliable drafting partner to turn a scope of work into a permit-ready set. It's also a fit if you already have a contractor or design-build team and just need the drawings produced accurately and on schedule.
If your project is a small standalone unit rather than an addition to your existing home, our ADU Plans & Design service may be the better starting point.
What's Included
As-Built Documentation
We document your existing structure from your field measurements, photos, and any prior plans or surveys you can provide, so the new work is drawn against an accurate picture of what's really there.
Existing-Architecture Matching
Rooflines, exterior materials, window and door proportions, and structural rhythm are studied and carried into the addition so the finished project reads as one cohesive home.
Floor Plans, New and Existing
Clear existing-condition and proposed-condition floor plans, dimensioned and labeled, showing exactly what's being demolished, what's staying, and what's new.
Structural & Framing Coordination
Framing plans and structural notes for the new work, coordinated with the existing structure, with load-bearing changes flagged for engineering review where required.
Elevations & Sections
Exterior elevations and building sections that show how the addition or remodel ties into the existing roof, walls, and foundation.
Code-Coordinated, Permit-Ready Set
A complete drawing package prepared for submittal to your local building department, coordinated with the applicable local code requirements for your jurisdiction.
Our Process for Additions & Remodels
- Scope and site information intake. We start with your goals for the project and gather what documentation exists: prior plans, surveys, photos, and field measurements of the existing structure.
- As-built development. We build accurate existing-condition drawings first. This is the reference point for everything that follows, and getting it right up front prevents mismatches later.
- Design and matching pass. We draft the proposed addition or remodel against the as-built, working to match the existing architecture's rooflines, materials, and proportions while meeting your program needs.
- Code and structural coordination. Structural elements, setbacks, and other local code requirements are coordinated into the set, with anything needing an engineer's stamp flagged clearly.
- Review and revisions. You review the draft set and request changes. A set number of revisions is included and confirmed at quote.
- Final permit-ready delivery. You receive a complete, permit-ready drawing package ready for submittal to your local building department.
Turnaround
Turnaround for an addition or remodel drawing set depends on the size of the project, how much of the existing structure needs to be documented, and your local jurisdiction's submittal requirements. We'll walk through a realistic timeline for your specific project when we quote it, so you know what to expect before drafting starts.
See Examples
Want to see the level of detail in a finished addition or remodel set? Visit our Portfolio page for examples of our drafting work.
Related Services
An addition or remodel project sometimes overlaps with other parts of what we do. A few related services worth a look:
Frequently Asked Questions
Do you need to visit my house to draft an addition or remodel?
No. We work entirely remotely. We'll walk you (or your contractor) through exactly what field measurements and photos we need to build accurate as-built drawings of your existing structure, and we can also work from an existing survey or prior plan set if you have one.
What is an as-built drawing and why does my project need one?
An as-built is a drawing set that documents your home exactly as it currently stands, including layout, dimensions, structural elements, and existing systems. For an addition or remodel, the as-built becomes the foundation everything else is drawn against, so the new work lines up correctly with the old and the plan set holds up under permit review.
Will the addition match the style of my existing house?
Matching the existing architecture is central to this service. We study your home's rooflines, exterior materials, window proportions, and structural rhythm so the addition reads as part of the original house rather than a visibly bolted-on extension.
Can you handle a remodel that also changes the structure, like removing a load-bearing wall?
Yes. We draft the structural changes as part of the plan set and flag any elements that will need an engineer's review or stamp, since some structural modifications require engineering sign-off depending on your jurisdiction.
How long does an addition or remodel drawing set take?
Timelines vary by project scope, how much of the existing structure needs to be documented, and your local jurisdiction's requirements. We'll give you a project-specific timeline estimate at quote.
How many revisions are included?
A set number of revisions is included with every project and confirmed upfront at quote, so there are no surprises once drafting begins.
Start Your Addition or Remodel Drawing Set
Tell us about your existing home and what you're planning to add or change. We'll scope your as-built and drawing set and get you a free quote.