ADU Regulations at a Glance
Savannah ADU Rules & Regulations
You are allowed to build one ADU on properties in designated zones like A-1, RSF-, RTF-, RMF-1, etc. These ADUs aren't counted in the total number of houses allowed in an area. However, mobile homes, shipping containers, RVs, or trailers are not permitted as ADUs, except manufactured homes in certain zones.
ADUs can either be attached to or detached from the main house. If attached, they need to share a wall with the main house and have a separate entrance, usually on the side or back. Detached ADUs must adhere to specific distance rules from the main house and property lines.
For some zones, your property needs to be 25% larger than the minimum size usually required. The building area of ADUs is included in the total allowed building area on your property. The ADU's size is capped at 40% of the main house's size, up to 700 square feet, although in some zones this can be up to 1,000 square feet. ADUs must meet the city's minimum size requirements and can have only one bedroom.
Design-wise, ADUs should resemble the main house, especially in special areas like historic districts. If you provide parking for the ADU, it should be on the same property and use the same driveway as the main house.
In terms of utilities, the ADU may need to share water and sewer connections with the main house, and a shared electrical meter might be required.
Height restrictions apply as well. In certain areas, ADUs can't be taller than 25 feet or the height of the main house, whichever is shorter. Also, any part of the ADU over 15 feet in height must be set back at least 15 feet from the rear property line unless it's next to a lane.
These rules are effective from May 25, 2023.
Your Rights Under California Law
California law (AB 68, AB 881, SB 9, and subsequent legislation) guarantees your right to build ADUs. Cities cannot:
- Require owner-occupancy for ADUs permitted after 2020
- Require additional parking for ADUs near transit
- Charge impact fees for ADUs under 750 sq ft
- Deny ADUs that meet state minimum standards
- Impose lot coverage limits that prevent a 800 sq ft ADU
If you believe your ADU application is being unfairly denied, California HCD can intervene on your behalf.
This information is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for legal guidance.
About Savannah
Savannah, Georgia, is a city with a rich cultural heritage and a diverse population. As of 2021, the city's population stands at approximately 147,087, while the larger Savannah Metropolitan Statistical Area (MSA) has about 410,008 residents. This reflects a notable growth in the region, surpassing the U.S. average growth rate.
The city's demographic makeup is diverse, with Black or African American residents making up about 52.35% of the population, followed by White residents at 39.24%. Other racial groups include those of two or more races, Asian, and other races. The median age in Savannah is around 36.9 years, indicating a relatively young population.
Savannah's economy is dynamic, with key employment sectors including Health Care & Social Assistance, Accommodation & Food Services, and Retail Trade. The workforce has been growing, with a 1.11% increase in employment from 2020 to 2021, reaching around 69,000 employees. The median earnings vary by industry, with the highest median earnings for men found in Manufacturing, Wholesale Trade, and Public Administration, and for women in Manufacturing, Transportation & Warehousing, and Utilities.
More About Savannah
Savannah, the oldest city in Georgia, is known for its picturesque coastal landscape, rich history, and distinctive Southern charm. Founded in 1733, Savannah is renowned for its well-preserved architecture, beautiful parks, and thriving arts scene.
Population: Savannah has a population of approximately 410,008 residents. The greater Savannah metropolitan area is home to about 400,000 people.
Local Economy: Savannah's economy is diverse, with several key sectors:
- Tourism: A major driver of the local economy, attracting millions of visitors annually.
- Port Operations: The Port of Savannah is one of the busiest container ports in the U.S.
- Manufacturing: Including aerospace, paper products, and chemicals.
- Healthcare: Several major hospital systems are significant employers.
- Education: Institutions like Savannah College of Art and Design (SCAD) play a crucial role.
- Military: The presence of nearby military bases contributes to the local economy.
Popular Neighborhoods:
- Historic District: The heart of the city, known for its beautiful squares and historic homes.
- Victorian District: Features many restored Victorian-era homes.
- Ardsley Park: A planned suburban community with tree-lined streets and historic homes.
- Midtown: A diverse area with a mix of residential and commercial properties.
- Wilmington Island: A suburban area offering a more relaxed, coastal lifestyle.
- Southside: A rapidly developing area with newer homes and commercial centers.
ADU Regulations in Savannah:
Savannah has relatively recently updated its ADU regulations, though they are more restrictive compared to some cities in California or the Pacific Northwest:
- Zoning: ADUs are permitted in certain residential zones, primarily in the urban core and mid-city areas.
- Types of ADUs: Both attached and detached ADUs are allowed, often referred to as "carriage houses" in Savannah.
- Size Limits:
- ADUs are generally limited to 24 feet in height and cannot exceed 40% of the heated floor area of the principal dwelling.
- The maximum size is typically capped at 800 square feet.
- Parking: One additional off-street parking space is generally required for an ADU, unless certain exceptions apply.
- Owner Occupancy: The property owner must occupy either the principal dwelling or the ADU.
- Design Standards: ADUs must be designed to be compatible with the principal structure and the neighborhood character.
- Short-term Rentals: ADUs can potentially be used for short-term rentals, subject to the city's short-term rental regulations and zoning restrictions.
- Historic District Considerations: In Savannah's Historic District, ADUs (carriage houses) are subject to additional review to ensure compatibility with historic preservation standards.
These regulations aim to increase housing options in Savannah while maintaining the city's unique character and historic integrity.
Unique Aspects of Savannah:
Savannah is famous for its distinctive city plan, featuring 22 park-like squares laid out in a grid pattern. This unique urban design, dating back to the city's founding, contributes significantly to Savannah's charm and livability.
The city's rich history is evident in its architecture, with many well-preserved examples of Federal, Georgian, and Greek Revival styles. The Historic District is one of the largest National Historic Landmark Districts in the United States.
Savannah has a thriving arts and culture scene, largely influenced by SCAD. The city hosts numerous festivals and events throughout the year, including the Savannah Music Festival and the Savannah Film Festival.
The city's coastal location provides access to beautiful beaches on nearby Tybee Island, as well as opportunities for water-based recreation and seafood dining.
Savannah is known for its Southern hospitality and has a reputation as a foodie destination, offering both traditional Southern cuisine and innovative modern restaurants.
The city has a unique open container law in the Historic District, allowing adults to carry alcoholic beverages in open plastic containers while walking around.
In conclusion, Savannah offers a unique blend of historical charm, coastal beauty, and modern amenities. Its ADU regulations, while more restrictive than some other cities, reflect an effort to balance increased housing options with preservation of the city's unique character. As Savannah continues to grow and attract new residents, particularly in the tech and creative sectors, it will be interesting to see how these regulations evolve to meet changing housing needs while maintaining the city's distinctive appeal.
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Types of ADUs You Can Build in Savannah
California law allows several types of accessory dwelling units on residential properties. Understanding your options helps you choose the best approach for your property and goals.
Detached ADU
A standalone structure built separately from your main house, typically in the backyard. Detached ADUs offer maximum privacy for both homeowners and tenants, with their own entrance, walls, roof, and complete living facilities. In Savannah, detached ADUs can be up to 1,200 square feet and 16 feet tall. This option provides the most flexibility in design and placement, though it typically costs more than conversions due to new construction requirements.
- Max Size: Up to 1,200 sq ft
- Height: Up to 16 feet
- Setbacks: 4 ft from side/rear lines
- Best For: Maximum rental income, privacy
Attached ADU
An addition built onto your existing home, sharing at least one wall with the primary residence. Attached ADUs are often more cost-effective than detached units because they can leverage existing foundation, roof structure, and utility connections. They work well on properties with limited backyard space or where you want to minimize the visual impact of new construction. Many homeowners choose attached ADUs for aging parents who want proximity while maintaining independence.
- Max Size: Up to 1,200 sq ft
- Height: Matches main home
- Setbacks: Same as main structure
- Best For: Limited lot space, family housing
Garage Conversion ADU
Transform your existing garage into a complete living space. Garage conversions are often the most affordable ADU option in Savannah because the basic structure already exists. You save on foundation, framing, and roofing costs while creating a valuable rental unit or family living space. California law prohibits cities from requiring replacement parking when you convert a garage to an ADU, making this option particularly accessible. Most garage conversions result in studios or one-bedroom units ranging from 400 to 600 square feet.
- Typical Size: 400-600 sq ft
- Timeline: 3-5 months typical
- Cost: 30-50% less than new construction
- Best For: Budget-conscious, quick timeline
Junior ADU (JADU)
A smaller unit of up to 500 square feet created within your existing home's footprint, typically by converting a bedroom, basement, or attached garage. JADUs must include a cooking facility (at minimum, a sink, counter, and small appliance outlet) but can share a bathroom with the main house. In Savannah, you can build both a JADU and a full ADU on the same property, maximizing your housing options. JADUs require owner-occupancy in either the main house or the JADU itself.
- Max Size: 500 sq ft
- Location: Within existing home
- Requirements: Owner-occupancy required
- Best For: Minimal construction, family use
Above-Garage ADU
Build a new living unit above your existing or new garage structure. This two-story approach preserves your parking while adding living space above. In Savannah, above-garage ADUs can reach 18-20 feet in height depending on distance from property lines. This option is particularly popular in neighborhoods with narrow lots where backyard space is limited. The elevated position often provides better views and natural light than ground-level units.
- Max Size: Up to 1,200 sq ft
- Height: Up to 18-20 feet
- Parking: Preserved below unit
- Best For: Limited lot space, maintaining parking
Basement Conversion
While less common in Southern California due to construction patterns, properties with existing basements can convert that space into an ADU. Basement conversions require proper egress windows, adequate ceiling height (at least 7 feet in habitable areas), and may need waterproofing and ventilation upgrades. When properly executed, basement ADUs provide naturally cool living space and complete separation from the main home's daily activities.
- Max Size: Existing footprint
- Requirements: Egress, ceiling height
- Benefits: Cool temps, full separation
- Best For: Existing basements only
Complete ADU Services in Savannah
From initial feasibility analysis through final inspection, we handle every aspect of your ADU project. Our Savannah-focused approach ensures your project meets all local requirements while maximizing value.
Feasibility Analysis
We begin every project with a comprehensive analysis of your property's ADU potential. Our team reviews your lot size, zoning, setbacks, utility connections, and neighborhood context to determine what you can build. In Savannah, this includes understanding any overlay zones, historic district requirements, or other local factors that might affect your project. You receive a detailed report showing your options, estimated costs, and potential rental income before committing to design work.
- Property zoning verification
- Setback and lot coverage analysis
- Utility capacity assessment
- Cost and ROI projections
Design & Architecture
Our design team creates ADU plans tailored to your property and goals. Whether you want a modern studio for maximum rental income or a two-bedroom unit for family members, we design spaces that work. We understand Savannah architectural context and create designs that complement existing homes while meeting all building code requirements. Every design includes structural engineering, Title 24 energy compliance, and all documentation needed for permits.
- Custom floor plan development
- 3D renderings and visualizations
- Structural engineering
- Energy compliance documentation
Permitting & Approvals
Navigating Savannah permitting can be complex, but we handle it all. Our team prepares complete permit applications, manages plan check submissions, and coordinates with building department staff to address any comments or corrections. We track your application through the approval process and keep you informed of progress. Our experience with Savannah regulations helps avoid common pitfalls that delay other projects.
- Complete permit application prep
- Plan check management
- Building department coordination
- Permit tracking and updates
Construction
Our licensed construction team builds your ADU with quality materials and skilled craftsmanship. We handle all aspects of construction including foundation, framing, electrical, plumbing, HVAC, insulation, drywall, flooring, cabinets, and finishes. Throughout the build, we coordinate required inspections, manage subcontractors, and keep you updated on progress. Our goal is delivering a finished ADU that exceeds your expectations while respecting your timeline and budget.
- Licensed general contractor
- Quality materials and finishes
- Inspection coordination
- Project management and updates
Interior Design
A well-designed interior maximizes both livability and rental appeal. Our interior design services help you select finishes, fixtures, and colors that create appealing spaces within your budget. We offer curated finish packages at different price points, or work with you to customize selections. From kitchen layouts that maximize counter space to bathroom designs that feel spacious, we sweat the details that make small homes work beautifully.
- Finish and fixture selection
- Space planning optimization
- Curated design packages
- Custom interior options
Financing Guidance
We help connect you with financing options suited to your situation. Many Savannah homeowners use home equity, construction loans, or specialized ADU financing products to fund their projects. We can introduce you to lenders experienced in ADU financing and help you understand options including cash-out refinancing, HELOCs, and construction-to-permanent loans. While we're not lenders ourselves, our guidance helps you navigate financing decisions confidently.
- Financing option overview
- Lender introductions
- ROI and cash flow projections
- Budget planning assistance
How We Build Your Savannah ADU
Our streamlined process takes you from initial concept to move-in ready ADU. Here's what to expect at each stage of your project.
Free Consultation
We start with a free consultation to understand your goals, assess your property, and explain your options. This can happen via phone, video call, or an in-person site visit in Savannah. You'll learn what you can build, approximate costs, and timeline expectations.
Feasibility Study
Our team conducts a thorough analysis of your Savannah property. We verify zoning, calculate setbacks and lot coverage, assess utility connections, and identify any site-specific considerations. You receive a written report with your ADU options.
Design Development
Working with our architects and designers, you'll develop floor plans, select exterior styles, and make finish selections. We create 3D renderings so you can visualize the finished ADU before construction begins.
Permitting
We submit your complete permit application to Savannah and manage the entire approval process. This includes responding to plan check comments and coordinating with building department staff through to permit issuance.
Construction
With permits in hand, construction begins. Our crews work efficiently while respecting your property and neighbors. For a typical Savannah ADU, construction takes 4-6 months. You'll have a dedicated project manager throughout the build.
Walkthrough & Move-In
We conduct a detailed walkthrough, demonstrate systems and appliances, and address any punch list items. Once final inspections are complete, you receive your certificate of occupancy. Your new Savannah ADU is ready.
ADU Costs in Savannah
Understanding ADU costs helps you plan realistically and evaluate the investment opportunity. Here's what to expect for typical Savannah ADU projects.
Garage Conversion
$100,000 - $180,000Converting an existing garage is typically the most affordable path to an ADU. You save on foundation and framing since the basic structure exists. Costs vary based on garage condition, size, and finish level desired. Most garage conversions in Savannah result in studios or one-bedroom units between 400-600 square feet.
- Electrical and plumbing installation
- HVAC system
- Insulation and drywall
- Kitchen and bathroom
- Flooring and finishes
- Permits and inspections
Detached New Construction
$200,000 - $400,000Building a new detached ADU involves complete construction from the ground up. This option costs more but offers maximum design flexibility and typically commands higher rents. A one-bedroom detached ADU in Savannah typically costs $200,000-$280,000. Two-bedroom units range from $280,000-$400,000 depending on size and finishes.
- Foundation and site work
- Complete framing and roofing
- All mechanical systems
- Interior and exterior finishes
- Utility connections
- Design, engineering, permits
Attached Addition
$150,000 - $300,000Attached ADUs share a wall with your existing home, which can reduce some construction costs. You may be able to tie into existing roof structure and foundation, though this depends on your home's configuration. Costs fall between garage conversions and fully detached new construction for most Savannah projects.
- Foundation extension (if needed)
- Framing and roofing integration
- Separate entrance and utilities
- Complete interior buildout
- Fire separation requirements
- Permits and inspections
Return on Investment
Actual rents depend on unit size, finishes, location within Savannah, and current market conditions. One-bedroom ADUs typically rent higher than studios; two-bedroom units command premium rates.
According to Freddie Mac research, ADUs add 20-30% to property values in high-demand California markets. This often exceeds construction costs, creating immediate equity.
When you factor rental income against construction costs, many Savannah ADUs generate 8-12% annual cash-on-cash returns, competitive with or exceeding other investment options.
Frequently Asked Questions About ADUs in Savannah
Get answers to the most common questions about building an accessory dwelling unit in Savannah.
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