Fabl Design
Island Home Park · Knoxville, TN

Bungalow additions and ADUs in South Knoxville's riverside streetcar suburb

Island Home Park holds Knoxville's densest concentration of Craftsman bungalows on a compact riverside grid marked by 1909 marble pillars. Additions here live or die on how well they carry the bungalow's roof form and porch line to the rear.

Rendering of a white detached garage and screened porch addition on a sloped lawn, designed by Fabl Design
History & architecture

How Island Home Park was built

Island Home Park was developed as a streetcar suburb in the early 1900s, with the marble entrance pillars at Island Home Avenue and Maplewood Drive set in 1909 to mark the entry from the river side.

Build-out ran through the 1910s and 1920s and produced what is generally described as Knoxville's largest concentration of Craftsman bungalows, with Tudor Revival and Colonial Revival houses filling in around them.

The district was listed on the National Register in the mid-1990s under the Knoxville and Knox County multiple property listing, and later pillars at Island Home Avenue and Fisher Place mark a second entry.

Typical era
1900s–1920s
Dominant styles
Craftsman bungalow, with Tudor Revival and Colonial Revival
Typical lot
Narrow to moderate streetcar-suburb lots on a compact grid
Review
Historic design review likely — verify the H-1 boundary on KGIS
Landmarks & shared spaces

Places that anchor Island Home Park

1909 marble entrance pillars

Original gateway at Island Home Avenue and Maplewood Drive.

Island Home Park

Roughly 7.6-acre city park with ballfields, picnic areas, and greenway access.

Knoxville Downtown Island Airport

The river-island general aviation field that gives the neighborhood its name and its skyline.

Tennessee River frontage and greenway

Riverside trail links toward South Knoxville's Urban Wilderness network.

Businesses & districts

Where Island Home Park gathers

Sevier Avenue district

The nearest walkable strip of restaurants, breweries, and shops, a short trip north.

Chapman Highway corridor

South Knoxville's main commercial spine for everyday services.

Downtown Knoxville

Across the Gay Street and Henley bridges — a five-minute drive.

Zoning & overlays

Common zoning codes in Island Home Park

These are the base districts and overlays we see most often on Island Home Park lots. Always confirm your parcel's district and overlays on the Metro zoning map before design decisions get expensive.

RN-2Single-Family Residential Neighborhood

The typical district for bungalow blocks: 5,000 sq ft lots, 50 ft width, front setback at 20 ft or the blockface average — never under 10 ft — 5 ft sides with 15 ft combined, 25 ft rear, 35 ft height, 30% coverage and 40% impervious.

RN-1Single-Family Residential Neighborhood

Applies on the larger-lot edges: 10,000 sq ft minimum, blockface-average front setback with a 25 ft floor, 30% coverage and 40% impervious.

Overlays that apply here

H-1

Historic Overlay (verify the parcel)

Island Home Park is administered with adopted historic design guidelines, so exterior work in the district generally requires a Certificate of Appropriateness. Confirm your parcel's overlay on KGIS before you rely on it — the boundary does not match the National Register district exactly.

NR

National Register district (1994)

Listed under the Knoxville and Knox County multiple property submission; listing alone does not restrict private work.

F

Floodplain

Lots nearest the Tennessee River can sit in mapped flood hazard areas, which sets lowest-floor elevation and triggers substantial-improvement rules on big remodels.

ADU

Accessory Dwelling Unit standards (Art. 10)

Around 600 sq ft on a 5,000–7,000 sq ft lot, up to 1,000 sq ft on a 10,000–20,000 sq ft lot, subordinate to the house and inside the base district's setbacks.

Permitting path

  1. 1Confirm on the KGIS zoning map whether the parcel carries a local H-1 historic overlay or an NC-1 neighborhood conservation overlay. National Register listing alone carries no restriction on private exterior work — the local overlay is what triggers review.
  2. 2Inside H-1, exterior work — roofing, windows, siding, porches, additions, outbuildings, and demolition — requires a Certificate of Appropriateness before the City will issue a building permit.
  3. 3Applications are reviewed against that district's adopted design guidelines and the Secretary of the Interior's Standards. Staff can handle routine items; additions and new construction go to the Knoxville Historic Zoning Commission, which meets monthly (third Thursday).
  4. 4Recode Knoxville's base district still applies underneath the overlay — blockface-average front setback, side setbacks tied to lot width, 35 ft height, and the building coverage and impervious caps.
  5. 5Then submit to Plans Review and Inspections for the building permit with the COA in hand.
Why it matters

Island Home Park's place in Knoxville

The largest surviving concentration of Craftsman bungalows in Knoxville, and the clearest picture of early-1900s South Knoxville development.

A riverside streetcar-suburb plan whose entry pillars and street grid are still legible more than a century on.

Anchors South Knoxville's identity alongside the island airport, the riverfront, and the Urban Wilderness trail system.

Events & festivals

What happens in Island Home Park

Dogwood Arts Trail

April

The neighborhood is a longstanding trail route, with homeowners readying gardens for visitors.

Park season at Island Home Park

Spring–fall

Ballfields and picnic areas keep the shared green in constant use.

Riverside greenway use

Year-round

Trail connections toward the Urban Wilderness draw steady weekend traffic.

Designing here

What this means for your Island Home Park project

  • The bungalow's low, broad roof is the design constraint. A rear addition that continues the eave line and roof pitch reads correctly; a taller boxy wing never does.
  • Dormer additions are the classic way to get bedrooms out of a bungalow attic, and they are far easier to approve on the rear slope than the street slope.
  • The 30% coverage and 40% impervious caps on a 5,000 sq ft lot leave less room than owners expect once a driveway and rear patio are counted.
  • A detached garage with a loft ADU matches the historic outbuilding pattern and keeps the added mass off the street facade.
  • On river-side lots, check the flood map before schematic design — substantial-improvement rules can convert a remodel into a full-compliance project.
FAQ

Questions about Island Home Park

Start your project

Planning an addition or ADU in Island Home Park?

Tell us about your lot and what you're hoping to do. We'll write back within one business day.