House Plans and Custom Drafting in Plano, TX

Plano builds inward now, not outward

The permit numbers tell the story if you read them carefully. Collin County was authorized 19,082 new private housing units in 2025 (U.S. Census Bureau Building Permits Survey), but that boom is concentrated in the county's northern suburbs. Plano itself grew fastest in the 1990s, peaking at 5.6% per year; Census ACS data shows just 1.2% population change from 2019 to 2024, and current growth runs around 0.6% annually. We could not independently confirm Plano-specific new-build permit counts, and honestly, the exact figure matters less than the city's own verdict: mostly developed.

That leaves a housing stock centered on the early 1990s and a resale market that has softened, with Zillow showing typical values down 2.4% over the past year and Dallas Express reporting a 5.1% year-over-year decline in one recent period. For many owners, that math favors improving the house they have over trading up. Zip-level values still range from $431K in 75023 to $751K in 75093, so these are substantial homes worth investing in.

Here is the part that catches homeowners off guard: Plano requires full plan review and staged inspections for residential additions and alterations (plano.gov, Residential Additions & Alterations). A sketch on graph paper will not get through. You need complete, code-coordinated construction drawings, which is precisely what our permit-ready drawings and as-builts service exists to produce.

ADUs and accessory buildings in Plano: the honest picture

Texas has no statewide ADU mandate. SB 673, the 2025 bill that would have preempted local restrictions statewide, passed the Senate but died in the House on June 2, 2025, so regulation remains entirely city by city. The spread across the state is wide: Austin's HOME Initiative is the most permissive, Dallas requires an ADU Overlay District, and Houston has no zoning code at all, leaving deed restrictions to govern. You can see how differently this plays out in our Dallas and Houston pages.

Plano sits in the gray zone. No dedicated ADU ordinance surfaced in our research; instead, the city regulates "residential accessory buildings," with permits required for structures over 120 square feet and screening and setback rules that apply per the city's accessory-building handout and zoning ordinance. That makes ADU and garage-apartment feasibility a lot-by-lot question, and we would rather tell you that plainly than pretend otherwise. Before you commission ADU plans and design work, verify your specific lot with Plano Planning at 972-941-7140. When the lot checks out, we design to the setback and screening constraints from day one.

The drafting services a 1993-era suburb actually needs

We offer eight services, but Plano's data points to a clear core four.

Remodels also open doors the original 1990s design never considered. Many Plano clients pair an addition with energy-efficient home design to rethink the envelope while walls are already open, or with multigenerational and universal design to adapt a long-held home instead of leaving it. And for the occasional teardown or infill lot in a city with little raw land left, we draft custom house plans and offer stock house plans starting at $799.

How remote drafting works for a Plano project

Plano's design market is competitive but fragmented, and much of the local drafting capacity is bundled inside design-build remodeling firms, where the drawings are tied to one builder's construction contract. We work differently. Apex Drafting is an independent, fully remote studio based in Colorado City, Arizona, with no Plano office and no construction arm. Your drawings belong to you, so any builder can bid them.

1. Share your project. Photos, measurements, a survey if you have one, and your goals, all handled by phone, email, and video.
2. We document the existing house. For most addition and remodel work on 1990s-era homes, accurate as-built drawings come first.
3. Design and drafting. We develop the plans with you, and revision rounds are built into every quote so the design is right before it is final.
4. Permit-ready delivery. You receive PDF and CAD files formatted for submission to Plano's residential plan review. We confirm a realistic delivery window with your quote rather than promising a one-size-fits-all turnaround.

Where else we work

Plano is one of our Texas focus markets. Explore the rest of the state and beyond.

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