What We’ve Learned Building ADUs in Columbus
Accessory Dwelling Units (ADUs) are becoming an important housing option in Columbus, Ohio. They help families stay close, create flexible rental or guest space, and add housing without changing neighborhood character. Columbus is updating its zoning code to make ADUs easier to build. Read on to learn what ADUs are, why cities like Columbus are embracing them, and what we have learned from building them for clients.
Why ADUs Are Gaining Momentum in Columbus
Columbus is growing. More people want to live close to work, schools, parks, transit, and the neighborhoods they love. That demand pushes the local housing market to adapt. ADUs are becoming one of the most practical ways to add new homes in areas that already have established character and amenities.
City leaders have been studying ADUs for years. The Housing For All initiative and the Columbus Forward zoning update both point toward a future where ADUs can be built by right rather than through complicated variance processes. This shift matters. A by-right pathway gives homeowners clearer rules, fewer unexpected steps, and a more predictable timeline.
The appeal is simple. ADUs let homeowners add a new living space on the lot they already own. The surrounding community benefits from more housing options without losing the scale that neighbors care about. This is what planners call gentle density. A little more housing. A lot less disruption.
At Compton Construction, we see this interest growing every year. Families want closer connections. Homeowners want options for aging in place. Some want to build a future rental. Others want more space but prefer to stay within their neighborhood. ADUs meet all of these needs with a small footprint and thoughtful design.
The Benefits of ADUs in Urban Neighborhoods
ADUs bring value to both individual homeowners and the broader city. They support smaller-scale growth and increase housing options in walkable areas.
More space options for households
Families use ADUs for:
- Aging-in-place support
- Adult children
- Long-term guests
- Caregivers
These needs often arise at different points in life. An ADU provides a stable, comfortable answer.
More attainable housing choices
ADUs tend to be smaller and more cost-efficient than new detached homes. Their size often leads to more reasonable rent levels or living costs. They can also help homeowners generate income.
Compatible with neighborhood character
Because most ADUs sit behind the main home, they rarely disrupt the streetscape. Neighbors see little change while the community gains more housing options.
Support for sustainable living
ADUs use fewer materials, fit well on existing lots, and can adopt high-performance building strategies. Smaller structures also make energy-efficient design more achievable.
The ADU Permitting Landscape in Columbus
Columbus has historically required homeowners to seek a council variance for most ADUs. That process slowed adoption and created uncertainty. Between 2019 and 2023, the city approved 44 ADUs through case-by-case reviews, with most located above garages and in higher-density residential districts.
Proposed zoning updates aim to simplify this process. The changes would allow ADUs in all residential and apartment districts with straightforward standards:
- One ADU per lot
- Maximum size of 1,000 square feet or 65 percent of the main home
- Detached ADUs placed in the rear yard
- Height limited to remain visually subordinate
- No extra parking required
- Owner-occupancy required for single-family districts
These updates would make ADUs a regular part of neighborhood growth. They also align well with the way we plan projects. Early coordination, clear requirements, and thoughtful design fit naturally with our design-build approach.
Case Study 1: The Deshler Carriage House
One of our recent ADUs sits above a two-car garage on Deshler Avenue. It is a compact, modern apartment with a clean material palette and thoughtful details. The owner wanted flexibility. A long-term rental made sense. A family suite made sense too. The structure needed to feel cohesive with the main home while supporting multiple possible uses.
A good example of gentle density
This ADU is hidden from the street. It adds a full living space without altering the rhythm of the block. It blends concrete, wood, and modern accents to create a structure that feels both refined and practical. The vertical design also keeps most of the yard open. This is a smart approach for homeowners who want to maintain outdoor space while adding new housing opportunities.
Lessons learned from the Deshler project
- Think vertically. Stacking the unit above a garage is efficient and common in urban neighborhoods.
- Design matters. Material choices help an ADU feel intentional and aligned with its surroundings.
- Plan the structure early. The garage and the living space need to be designed together to support mechanical systems and comfortable living.
- This model aligns with Columbus trends. Most existing Columbus ADUs approved over the past five years use this same two-story approach.
The Deshler project shows how ADUs can step quietly into a neighborhood while delivering long-term value to the homeowner.
Case Study 2: The Oak Street Passive ADU
The second ADU we built is a different type of project. Located in Olde Towne East, this structure was developed as a high-performance prototype for Compton’s founder Blake Compton. The unit was designed with passive-level insulation, airtight construction, thoughtful window placement, and a layout that supports solar generation.
A forward-looking ADU
Where Deshler reflects today’s common ADU model, the Oak Street ADU reflects the direction housing may go in the future. The designer, Jeremy Miller of Geoalchemy Studio, planned a structure that performs exceptionally well in all seasons. The project uses real wood-fiber insulation, clay plasters, and moisture-friendly materials. It sits lightly on the site and respects the existing tree canopy.
Lessons learned from the Oak Street project
- High-performance buildings require early planning. Every detail of the envelope matters.
- Healthy materials elevate comfort. They improve indoor air quality and contribute to a calmer, more stable interior.
- Passion projects can become learning labs. This ADU gives us insight into how high-performance strategies translate to small footprints.
- Even modest upgrades make a difference. Better insulation, improved air sealing, and simple design choices produce long-term returns.
Oak Street proves that ADUs can be more than accessory dwellings. They can become templates for how smaller, sustainable homes contribute to the larger fabric of a city.
What Compton Construction Has Learned From Building ADUs
Completing these two ADUs has given us insight into how homeowners can set up their projects for success.
Sites vary more than people expect
Lot width, utility locations, alley access, and tree protection areas all influence the layout. ADUs require a close look at how existing and new structures will work together.
Early planning prevents delays
An ADU depends on coordinated utility runs, structural connections, ventilation paths, and drainage. We encourage homeowners to involve their builder early so these elements can be sorted out before design is finalized.
Permitting experience matters
We have navigated variance reviews and understand how the updated zoning rules are shaping up. This knowledge helps our clients take the right steps, gather the correct documents, and move forward with confidence.
Good design supports long-term value
Material choices, window placement, and general layout all influence how an ADU feels and performs. A well-designed ADU blends naturally with the main home and with its surroundings.
Why Now Is a Great Time to Explore an ADU
Columbus is preparing to normalize ADUs in its zoning code. Homeowners have a clearer path ahead. Neighborhoods can welcome new residents without losing their sense of place. Families can expand their options in thoughtful, long-lasting ways.
An ADU can become a rental, a guest suite, a home for relatives, or a future-ready living space that evolves with your needs. With completed ADUs across different styles and performance levels, Compton Construction is well-positioned to guide you through feasibility, permitting, design, and construction.
Interested in adding an ADU to your property?
Let’s talk about your site, your goals, and your long-term plans.
Reach out to our team for a pre-construction conversation. We can help you determine feasibility, explore design ideas, and start shaping a plan that fits your vision.
