The Cottage ADU Plan
The Cottage ADU Plan
The Cottage ADU Plan is a 1-bedroom, 1-bathroom, 639 square foot home designed with flexible living in mind. With a classic cottage aesthetic and a layout that can double as an office as well as a guest house, this plan solves the real constraints of urban infill development.
The main level opens to an open-concept kitchen, dining, and living area oriented toward the back yard, maintaining natural light and visual depth on a compact footprint. oversized sliding door near the living area creates an expansive interior feeling. The primary suite occupies the front corner with a cozy walk-in setup, separated from the high-traffic zones for privacy and quiet.
This plan is optimized for 32-foot-wide lots with standard setbacks. It provides a timeless cottage charm ideal for historic neighborhoods or accessory dwelling spaces.
What's Included in This Plan Set
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Architectural drawings — Floor plans, elevations, building sections, and roof plan.
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Structural drawings — Foundation plan, framing plans, and structural details.
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Electrical layout — Schematic electrical plan for permitting reference.
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Site plan template — A blank site plan diagram sized for the intended lot width — your surveyor or civil engineer fills in your specific lot data.
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Energy compliance notes — General energy code compliance notes for most U.S. jurisdictions.
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Format — Print-quality PDF, delivered immediately at checkout. Files are 24" × 36" sheet size, standard for print shops and permit submissions.
Plan Specifications Table
| Specification | Value |
| Plan Name | The Cottage ADU Plan — V1 |
| Bedrooms | 1 |
| Bathrooms | 1 full |
| Total Living Area | 639 sq ft |
| Lot Width Required | [House Width + 10'] ft minimum |
| Lot Depth Required | [X] ft minimum |
| Stories | 1 |
| Garage | None |
| Foundation Type | Slab |
| Architectural Style | Traditional Cottage |
| ADU Option | Included (Stand-alone ADU) |
| Sheet Count | 8 sheets |
| File Format | PDF (print-ready, 24" × 36") |
| License | Single-build license — one permitted structure |
Drawings are delivered digitally via email within minutes of your purchase.
All Infill Plans products are digital downloads. Because our plan sets, CAD files, and related documents contain intellectual property that cannot be physically returned once delivered, all sales are final.
Once a digital file has been purchased, accessed, downloaded, or delivered, we are unable to offer returns, exchanges, or refunds. By completing your purchase, you acknowledge that you are receiving digital intellectual property and that the product cannot be “returned” in the same way as a physical item.
We encourage all customers to carefully review the plan description, square footage, included drawings, licensing terms, and product options before purchasing. If you have questions about whether a plan is appropriate for your project, property, or jurisdiction, please contact us before placing your order.
If there is a technical issue with your download, such as a missing file, corrupted file, or incorrect file delivery, we will make reasonable efforts to correct the issue and provide the proper digital files.
Purchase of a plan does not guarantee permit approval. All plans must be reviewed by the local authority having jurisdiction and may require site-specific modifications, engineering, energy code compliance documentation, or review by a licensed professional in the project jurisdiction.
