Find quick answers to common house plan questions. Select any question below for assistance while browsing the home plan collection.
- Detailed foundation plan (slab, basement, or crawl space)
- Detailed floor plans
- Front, rear, and side elevations.
- Roof plan overview
- Typical wall sections and foundation details.
- General specifications and miscellaneous details as needed per house plan.
Review the website’s page on what’s in a set of house plans for a detailed explanation of these items.
Square footage calculations are measured from the outside perimeter of the exterior frame walls and include only finished, heated living spaces. Two-story volumes, vaulted areas, and staircases are only counted once, typically as part of the first-floor area. Calculations do include finished balconies and open walkways within the heated envelope. This combined total determines the total heated square footage, which explicitly excludes decks, porches, garages, basements, attics, and bonus rooms. Unfinished basements generally mirror the first-floor footprint, resulting in the same potential square footage.
Plan Packages: What is Included and What is Excluded
Framing
Plans include basic floor and ceiling framing specifications. Detailed framing packages, lumber sizing, beam layouts, and structural load calculations are typically provided by the chosen local lumber supplier.
HVAC
Plans do not include HVAC layouts. Mechanical system locations, equipment types, and duct designs are determined by local building codes and personal climate preferences. The mechanical subcontractor will provide these layout details.
Electrical
Plans include schematic electrical layouts showing suggested fixture, outlet, and switch locations. The electrical subcontractor will deliver detailed wire sizing and circuit diagrams.
Plumbing
Plans include standard plumbing fixture locations. If regional codes or specific design choices require more extensive layouts, the plumbing or mechanical subcontractor can supply a dedicated set of plumbing schematics.
In most cases, these house floor plans are ready for construction as-is. However, states, counties, and municipalities often enforce distinct building and zoning regulations. Purchased plans may occasionally require additional documentation or modifications to satisfy local building officials.
For instance, certain jurisdictions mandate compliance with specific energy codes, which typically involves submitting a standardized verification form. Furthermore, regions prone to natural hazards—such as seismic zones in California or high-wind coastal areas along the Gulf Coast—frequently require strict structural engineering. Building in these locations may necessitate hiring a locally licensed engineer to review the design and provide the precise structural calculations and drawings required for permitting. Checking with the local building department in the intended construction area is highly recommended to secure the most up-to-date regional requirements.
No, a material list is not provided with these plans.
Yes, you can customize any of these home plans to fit your needs. For more information, visit the modifications page.
These plans do not include a professional architect or engineer stamp. While most states exempt standard single-family residential designs from requiring an architect’s seal, local city or county building departments may still mandate a stamp from a licensed local architect or structural engineer before issuing a permit. You should check with your local municipality to verify their specific code requirements.
Orders are processed within 1–2 business days, with the objective of same-day or 24-hour delivery.
Due to the proprietary nature of these house plan designs, all sales are final and non-refundable.
Design Evolutions occasionally offers seasonal promotions, subject to specific limitations. Discounts exclude plan modifications, and price adjustments cannot be applied to purchases completed prior to a promotional period. Rain checks are not available.
These plans are licensed for a single build. If you love the design enough to build it more than once, enjoy a repeat-build discount on your next license purchase. Call or email to receive your discount.
Yes, these plans are protected by copyright law. To learn how to avoid infringement penalties, review the website’s guide on house plan copyrights