The Haven ADU Plan
The Haven ADU Plan
The Haven ADU Plan is a 1-bedroom, 1-bathroom, 810 square foot home designed from the ground up for narrow urban infill opportunities. At just 26 feet wide, this thoughtfully designed accessory dwelling unit delivers exceptional livability, abundant natural light, and a surprisingly spacious feel within a compact footprint.
The heart of the home is an open-concept living, dining, and kitchen space featuring vaulted ceilings that create volume and visual openness well beyond its modest square footage. Large windows and direct access to the expansive covered rear deck blur the line between indoor and outdoor living, making the home feel significantly larger than its footprint suggests.
The private bedroom suite is strategically located away from the primary living spaces and includes a walk-in closet, full bathroom access, and convenient proximity to the dedicated laundry room. Thoughtful storage throughout the home ensures every square foot works efficiently.
Outside, a 25-foot-wide covered deck creates an ideal space for entertaining, relaxing, or extending living space into the backyard. The simple roof forms, efficient structure, and compact building envelope make this plan economical to construct while maintaining strong architectural character.
Optimized for narrow infill lots, backyard cottages, and detached accessory dwelling unit developments, The Haven performs exceptionally well on flat sites where maximizing usable outdoor space is a priority. Whether used as a rental property, multigenerational housing solution, guest house, or primary residence, this plan delivers comfort, functionality, and modern design in a remarkably efficient package.
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 Haven ADU Plan |
| Bedrooms | 1 |
| Bathrooms | 1 full |
| Total Living Area | 810 sq ft |
| House Width | 26 ft |
| House Depth | 50 ft |
| Stories | 1 |
| Garage | None |
| Foundation Type | Crawl Space |
| Architectural Style | Modern Farm House |
| ADU Option | Included (Stand-alone ADU) |
| Sheet Count | 9 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.
