AI ADU, Garage, Shed & Carport Addition — 5 Backyard Structure Types
Roomagen ADU, Garage, Shed & Carport Addition is a free AI-powered exterior visualization tool that renders 5 backyard building types onto property photos: ADU (accessory dwelling unit), garage, carport, shed, and greenhouse. The hasExisting toggle switches the AI between adding a new building to an open area and detecting and renovating an existing structure in place. Processing usually takes under a minute, using 2 credits per image ($0.23-$0.40 depending on plan), with a free plan offering 6 credits.
Accessory buildings — ADUs, garages, carports, sheds, and greenhouses — add functionality, storage, and income potential to residential properties, with ADUs alone generating $800-$2,500 per month in rental income according to Freddie Mac research. The American Institute of Architects reports that ADU construction inquiries have increased 300% since 2020 as homeowners seek rental income and multigenerational housing options. Physical construction costs range from $3,000-$8,000 for a prefab shed to $100,000-$250,000 for a permitted ADU including foundation, plumbing, electrical, and finishes. Garage construction runs $15,000-$50,000, carports $3,000-$12,000, and greenhouses $5,000-$25,000 depending on size and materials. All require building permits, setback compliance, and weeks to months of construction. Roomagen AI renders any of 5 building types onto your existing property photograph in under 90 seconds at 2 credits per image. The hasExisting toggle detects current structures and replaces them with upgraded designs.
No credit card required. Results usually in under a minute.
Demo example: the “Before” image was created with AI for this site; it is not a customer photo.
Features
Visualize backyard buildings with 5 structure types — ADU (accessory dwelling unit), garage, carport, shed, and greenhouse. Add new structures or renovate existing ones using the hasExisting toggle. AI renders each building onto your property photo in under 90 seconds at 2 credits per image.
5 Building Types: ADU, Garage, Carport, Shed & Greenhouse
5 backyard building types: ADU, garage, carport, shed, greenhouse
Add New Structures or Renovate Existing Buildings
hasExisting toggle — renovate or replace current structures
Photorealistic Backyard Building Visualization in Under 90 Seconds
AI matches building style to the home's architecture — roof, materials, proportions
How It Works
Get professional results in three simple steps
Drop your photos here
or browse files
Upload Your Photos
Upload an exterior photo in JPEG, PNG, or WebP format (up to 50 MB) — backyard, side yard, or front yard showing the area where you want a building or the existing structure you want to renovate. If renovating an existing building, enable the hasExisting toggle so the AI detects your current structure's footprint, height, and position. The AI analyzes the main home's architectural style, available open space, terrain conditions, and surrounding landscape.
AI Processing
Select from 5 building types: ADU (accessory dwelling unit — self-contained living space with entrance, windows, and matching roof), garage (attached or detached with door style and material matching), carport (open-sided covered parking with roof and support columns), shed (utility or garden storage building), or greenhouse (glass or polycarbonate growing structure). The AI renders the selected building with correct perspective, shadow casting, material matching, and architectural coordination with the existing home.
Download Results
Download your building visualization, usually in under a minute. The photorealistic output shows accurate material textures, roof alignment, shadow casting, and natural integration with the surrounding property and landscape. Compare different building types and positions by reprocessing the same photo — each rendering costs 2 credits. Use the visualizations for investor presentations, contractor discussions, listing marketing, planning inquiries, or personal decision-making before committing to construction.
Why Choose Roomagen
ADU & Accessory Dwelling Units for Rental Income
5 backyard building types: ADU, garage, carport, shed, greenhouse
Garage & Carport Additions for Covered Parking
hasExisting toggle — renovate or replace current structures
Garden Sheds & Greenhouses for Utility & Hobby Spaces
AI matches building style to the home's architecture — roof, materials, proportions
Who Is It For?
Real Estate Agents
Show buyers and investors the ADU, garage, or carport potential of a property. Rendering the building on the actual lot photo demonstrates development opportunity and justifies higher asking prices.
Property Investors
Evaluate properties for ADU development potential by rendering the planned structure on site photos. Present photorealistic visualizations to lending partners for construction financing discussions.
Homeowners
Visualize a garage, shed, or greenhouse on your property before committing to construction. Compare building styles and positions to find the option that fits your lot and complements your home.
Common Use Cases
ADU Rental Income Visualization
Render an accessory dwelling unit on a backyard photo to evaluate rental income potential. The AI shows realistic ADU placement, architectural style matching, and scale relative to the main home — ideal for investor analysis.
Garage Addition for Listings
Add a garage to a property listing photo where covered parking is missing. Show buyers how the garage would complement the home's architecture, expanding the interested buyer pool for properties without existing garages.
Shed Replacement and Upgrade
Replace an aging shed with a modern design using the hasExisting toggle. Upload a photo of the current shed and see how an architectural storage building transforms the backyard appearance.
Greenhouse Planning
Visualize a greenhouse in different backyard positions to evaluate sun exposure and access. Test placement near the garden area, property boundary, or adjacent to the main house.
Investor Property Evaluation
Evaluate multiple properties for ADU development potential by rendering ADUs on each lot photo. Compare visualizations across properties to identify the best development opportunities and present findings to lending partners.
Carport to Garage Conversion
Show how an existing carport can be enclosed into a full garage using the hasExisting toggle. The AI detects the current carport structure and renders an enclosed garage with matching architectural style.
Unlike committing to backyard building construction costing $3,000-$250,000 depending on structure type and finishing level, Roomagen previews all 5 building types on your actual property photo before any commitment. ADU construction requires architect fees ($5,000-$15,000), engineering ($3,000-$8,000), building permits ($1,000-$5,000), and 4-12 months of construction. Garage construction requires foundation engineering, utility connections, and 4-8 weeks of building. Architect rendering services cost $500-$5,000 per view with 1-4 week delivery. 3D modeling in SketchUp or Revit requires technical expertise and produces non-photorealistic output. Roomagen processes at 2 credits per image on your existing exterior photo in under 90 seconds, with the hasExisting toggle allowing instant comparison between renovating an existing structure and adding an entirely new building.
| Roomagen | Physical Building Construction | |
|---|---|---|
| Cost | $0.23–$0.40 per image | $3,000–$250,000 |
| Turnaround | Under 90 seconds | Weeks to months |
| Building options | 5 types, 2 credits per run | One structure, one build |
| Renovate existing | hasExisting toggle | Demolition + reconstruction |
| Design iterations | Unlimited at 2 credits each | Architect revision fees |
| Permits required | None | Building permits mandatory |
| Risk | Zero — visual preview only | Major construction commitment |
Technical Specifications
- Supported formats
- JPEG, PNG, WebP
- Max file size
- 50 MB
- Output resolution
- HD / Ultra HD (Pro & Business)
- Building types
- 5 (ADU, garage, carport, shed, greenhouse)
- Existing structure detection
- hasExisting toggle — auto-detects and renovates current building
- Processing time
- Usually under a minute
- AI model
- Gemini AI
- Credit cost
- 2 credits per image
- Style matching
- Auto-matched to existing property architecture
- Scale reference
- Main house used as dimensional reference for proportional accuracy
Pricing
| Plan | Price | Credits/mo | Per Image | Resolution |
|---|---|---|---|---|
| Free | $0 | 6 (one-time) | Free | — |
| Starter | $12/mo | 60 | $0.40 | 2K |
| Pro | $29/mo | 200 | $0.29 | 2K or 4K (4 credits) |
| Business | $79/mo | 700 | $0.23 | 2K or 4K (4 credits) |
Per-image cost = 2 credits. Annual plans reduce cost by ~17%. Credit packages: 60/$19, 180/$45, 360/$79.
Frequently Asked Questions
Everything you need to know about Roomagen
Roomagen offers 5 building types: ADU (accessory dwelling unit for living space or rental income), garage (attached or detached vehicle storage), carport (covered parking structure), shed (garden or utility storage), and greenhouse (glass or polycarbonate growing structure).
When enabled, the AI detects your current structure and replaces it with an upgraded design. When disabled, the AI adds a new building to an open area of your property.
Upload a backyard photo and select the ADU option. The AI renders a self-contained dwelling unit with matching architectural style, appropriate scale, and realistic placement relative to the main home and property boundaries.
Each building rendering costs 2 credits ($0.23-$0.40 depending on plan). A free plan provides 6 credits for 3 visualizations. Compare that to physical ADU construction at $100,000-$250,000 or garage construction at $15,000-$50,000.
The AI analyzes your home's architectural style — modern, craftsman, colonial, ranch, or Mediterranean — and renders the new building in compatible materials, roof style, and proportions for a cohesive appearance.
Upload a photo showing the area where you want the garage. The AI renders a garage structure with appropriate door style, roof matching, and material coordination with the existing home.
Roomagen generates building renderings, usually in under a minute per image. Compare all 5 building types on the same property photo in under 10 minutes at 2 credits per rendering.
Property investors present ADU renderings to lending partners and banks to demonstrate the planned development. Photorealistic visualizations on the actual property show the investment thesis visually and support construction loan applications.
The AI uses perspective information from the photograph — horizon line, vanishing points, and the main house as scale reference — to place the new building at correct scale and angle relative to the existing property.
Select the greenhouse option and upload a backyard photo. The AI renders a glass or polycarbonate greenhouse structure with appropriate scale, door placement, and integration with the surrounding garden and landscape.
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