House & Timber Plan Co.

Collection

Mansion House Plans

Large-estate plans from 5,000 square feet up, with the room counts and the second kitchen that size of house actually needs.

Plans

360 plans available

About This Collection

Mansion House Plans

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Design Your Own

Mansion house plans are for owners building at the very top of the residential scale. House & Timber Plan Co.'s mansion collection covers homes from 8,400 to 12,000 square feet, each drawn as a complete construction set so your builder and design team start from a finished, buildable layout rather than a sketch.

Every mansion plan in the collection is two stories with 6 to 10 bedrooms, 6 to 11 bathrooms, and a 3-car attached garage. Layouts are organized around large shared living spaces, with dedicated rooms that make a home this size work day to day: home offices, bonus rooms, mudrooms, walk-in pantries, and in some designs a workshop.

The collection spans more than one look. Alongside classic mansion designs you'll find colonial, craftsman, modern, contemporary, farmhouse, and barndominium mansions, with brick, stone, and mixed-material exteriors. That range lets you match a home of this scale to its setting, whether that's a formal estate lot, a wooded acreage, or open country.

Mansion plans start at $199 with instant PDF download. Each set includes dimensioned floor plans for both levels, exterior elevations, roof framing, and construction specifications. Homes of this size almost always involve a local architect or engineer for site-specific structural and mechanical work, and every plan can be taken to one for modifications.

Common Questions

FAQ

How big are your mansion house plans?

Our mansion plans range from 8,400 to 12,000 square feet. All are two-story designs with 6 to 10 bedrooms, 6 to 11 bathrooms, and a 3-car attached garage.

How much do mansion house plans cost?

Mansion plans start at $199 and are delivered as an instant PDF download. The set includes floor plans, exterior elevations, roof framing, and construction specifications. There are no recurring fees.

What styles of mansion plans do you offer?

The collection includes classic mansion designs plus colonial, craftsman, modern, contemporary, farmhouse, and barndominium mansions. Exteriors include brick, stone, and mixed materials.

Can a mansion plan be customized?

Yes. Take the PDF to any local architect or drafting professional to adjust room sizes, add amenities, or adapt the plan to your lot. For homes of this size, most jurisdictions will also require a licensed engineer to review structural and mechanical systems for your site.