Custom House Plans in Bellevue, WA

Where to get your Bellevue building permit

Checked November 2026. Offices and rules change, so confirm with the office before you apply.

House plans we draw in Bellevue, WA

Every plan is drawn from scratch for your lot in Bellevue, WA, with free customization and 30 days of revisions.

• Modern farmhouse plans in Bellevue, WA

  Porches, gables and open kitchens, drawn for local codes and HOA rules.

• Barndominium plans in Bellevue, WA

  Steel, wood or post-frame shop-houses with RV bays, lofts and porches.

• Ranch and single-story plans in Bellevue, WA

  Ready to build one-level homes, from 3 bed 2 bath starters to 4-bedroom split plans.

• Craftsman blueprints in Bellevue, WA

  Deep porches and tapered columns that fit historic neighborhoods.

• Luxury and contemporary plans in Bellevue, WA

  Executive homes, flat-roof moderns and estates by our Master designers.

• Small homes, cottages and ADUs in Bellevue, WA

  Guest houses, garage apartments and affordable starter homes from $1,050.

• Engineering stamped blueprints in Bellevue, WA

  Permit-ready sets with a state-licensed engineer stamp add-on.

Building requirements

Building a house in Bellevue, WA: what the code requires

Statewide residential code

Building code

Washington State Residential Code (IRC-based with state amendments) applies statewide.

Energy code

The Washington State Energy Code – Residential is among the strictest in the US (energy credits system).

Climate zone

IECC climate zone 4–6. Insulation, windows and HVAC are sized to match.

Typical frost depth

12–18 in (west), 24–30 in (east). Footings must extend below the local frost line (confirm with your building department).

Foundations

Crawlspace or basement, depending on soil and lot slope.

Who can draw the plans

Single-family homes can generally be designed by a non-licensed home designer. A licensed engineer's stamp is often required for structural items, engineered foundations or special hazard zones, or when the local building official asks for it.

Engineer stamp

If your jurisdiction requires sealed drawings, add our Washington Engineer Stamp / Permit-Ready package ($1,000).

Washington-specific rules & hazards

• ●Seismic design required west of the Cascades.
• ●Critical areas ordinances (wetlands, steep slopes) and shoreline permits apply.
• ●Wildland-urban interface rules in eastern Washington.
• ●Seismic bracing, shear walls and hold-downs
• ●Heavy roof snow loads and steeper, well-braced roof framing
• ●Wildfire-resistant materials and defensible-space detailing

Summary for planning only. Codes, editions and local amendments change, so always confirm current requirements with the building department that will issue your permit. Our designers check your jurisdiction before drawing.

Towns, villages & rural counties

Permit checklist for building in Bellevue and surrounding towns

Requirements differ town by town. Use this checklist with your local building, zoning and health departments, and include what you learn in your design instructions. We'll draw to it.

1. 01Find who issues permitsIncorporated towns and cities usually have a building department. In unincorporated areas it's the county building or planning office, or a state agency, or in some rural areas nobody. Call before you buy the lot.
2. 02Zoning & setbacksCheck the zoning district for minimum lot size, front, side and rear setbacks, maximum height, lot coverage and whether barndominiums, ADUs or metal buildings are allowed.
3. 03HOA & deed restrictionsSubdivisions often restrict minimum square footage, exterior materials, roof pitch, garage orientation and outbuildings. These can be stricter than the town code.
4. 04Septic & well permitsWithout city sewer or water, you'll need a percolation (perc) test and a septic permit from the county health department, plus a well permit.
5. 05Driveway & culvert permitConnecting to a public road usually needs a driveway or culvert permit from the town, county or state DOT.
6. 06Floodplain development permitIf any part of the lot is in a FEMA flood zone, you'll need a floodplain permit and an elevation certificate, and the lowest floor must be at or above the Base Flood Elevation plus any local freeboard.
7. 07Energy code complianceMost jurisdictions require an energy compliance report (REScheck or similar) showing insulation, windows and HVAC meet the adopted energy code.
8. 08Engineering stampMany building officials require a licensed engineer's seal for foundations, beams, trusses, or high wind, snow or seismic zones. Add our Engineer Stamp option at checkout.
9. 09Utility & fire accessRural lots may need a fire-apparatus access road, a water supply for firefighting, or wildfire (WUI) defensible-space and ignition-resistant materials.
10. 10Inspections scheduleA typical sequence is footing, foundation, framing, rough MEP, insulation and final. A certificate of occupancy is issued after final inspection.

Popular styles around Bellevue

From $1,250

Craftsman Plans in Washington

Tapered columns, exposed rafter tails, stone bases and handcrafted detail.

From $1,300

Modern Plans in Washington

Clean lines, flat or shed roofs, floor-to-ceiling glass and indoor-outdoor living.

From $1,050

Cabin & A-Frame Plans in Washington

Timber, steep A-frames and big windows made for mountain or lake lots.

Bellevue and Washington house plan guides

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House plans for sale around Bellevue

• Ready to Build House Plans in Bellevue, WA
• Modern Farmhouse Plans in Bellevue, WA
• Barndominium Plans in Bellevue, WA
• Luxury House Plans in Bellevue, WA
• ADU and Small House Plans in Bellevue, WA
• Duplex House Plans in Bellevue, WA
• Mountain and Hillside House Plans in Bellevue, WA
• Bellevue Washington Luxury Modern Floor Plans