Modern 3-Bedroom Compact Small House Plan, 1150 sq ft, with 20’ x 31’ footprint only!

If you are concerned about eco-friendly living, or just want to build a small detached guest house at the back of your property, this compact small house design might be suitable for you.

This 3-bed small house plan has only 20′ x 31′ footprint and also potentially be built in modules. So the construction and maintenance costs can be significantly reduced, making this house super affordable. 



General house specification:

  • 1,150 sf 2-story structure
  • 3 Beds + 1 Small Den
  • 1.5 Baths⁠⠀
  • 20’-0” W x 31’-0” D
  • Laundry / utility storage room
  • Outdoor porches
  • Attic spaces for future development


The Design

This small house plan is suitable for a very tight and small plot of land. You can also build this as an off-grid independent cabin or secondary unit / detached ADU / granny suite. 

The original design comes with a slab foundation. You can also opt for either basement structure (with extra living space) or with a crawl space – depending on the existing site condition where you are planning to build. 

Despite its tiny shape, this house has ample natural lights. The interior looks spacious due to its compact and efficient layout and its modern full-height windows.

We use natural material finishes with modern touch for the exterior, e.g. stucco / cement finish, stones, metal roof, wood slats or siding clapboard (optional) and black frame door windows. 


Other Tiny House Plans

If you would like to see the smaller version of this compact small house plan (760 sq ft), please check this Tiny House Plan.


Purchasing this 3-Bedroom Compact / Small House Plan

This house plan is available for pre-order / purchase, either the original design or with design modifications (custom). We can modify the architectural design and drawings, e.g. reshape and resize the house so it can fit your land, rearrange the rooms and internal layout to fit your family needs, modify the windows and roof, as well as change / add the garage (including its location) or add a full basement. Mirrored plan is also available. 


The Basic Plan Set

The basic plan set is available in vector .pdf and/or .dwg formats. The set includes the following drawings:

  • Floor Plans 
  • Roof Plan
  • 4-side Building Elevations
  • Building Sections (min. 2)
  • Exterior and/or Interior Rendering Images (min. 10)
  • A Non-Exclusive License for 1x personal use

Custom plan sets / other drawing packages are available if you need additional drawings e.g. foundation plan, electrical plans, site plan, interior drawings, etc; or if you require a specific plan set for permit application / other purposes.

Costs to build the house per square foot varies depending on several factors, e.g. building materials / products that you select, the location and site condition where you want to build it, types of structural system / foundation, whether you need design modification or local permit, etc. Usually you can use our basic house plan / drawing set to obtain an initial cost estimate from a local builder in your city / country. Furthermore, if you buy our house plans, you can always adjust the original design and drawings to suit your budget.


Contact Us

If you are interested in buying and want to know more about the details first before ordering (especially if you want to make changes), please contact us here:

Contact Form

If you want to get a quote / fee proposal for our pre-designed house plan, please fill in this form:

House Plans Order Form

We also offer architectural services to design and develop a custom house plan. For inquiries regarding pricing, what are included in the drawing set, and info on how we work, please contact or write an email directly to us. If you’ve got all the information in hands and would like to get a quote from us, please use this form to place a custom design order:

Custom Home Design Form

All images and drawings are protected by copyright and not to be produced, copied, or edited in any format without written consent from ANK Studio.