Water damage restoration · Dunwoody, Georgia
Water damage restoration in Dunwoody, GA
Burst pipe, failed water heater, or storm water? Dunwoody-area ZIPs: 100 flood claims since 1978[1]; 44% of homes built before 1980[2]. Request help from local restoration crews. Dunwoody, in DeKalb County — ZIPs 30338, 30360, 30346, counts 51,792 residents (2025 estimate)[3].
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Dunwoody at a glance for water damage
- Population (2025 est.)
- 51,792[3]+0.3% since 2020
- County
- DeKalb[3]
- Land area
- 13.0 sq mi[4]
- Flood-insurance (NFIP) claims, local ZIPs
- 100 since 1978[1]$1,157,257 paid across 72 claims · ZIP 30338, 30360, 30346
- Flood & flash-flood reports within 10 mi
- 35[5]2016–2025 · latest Aug 29, 2023
- Federal disaster declarations incl. flooding, DeKalb Co.
- 1[6]of 12 total declarations
- Homes built before 1980
- 44%[2]the highest share of the 15 Atlanta-area suburbs we cover
- Households renting
- 44%[2]2020–2024
What Dunwoody's numbers say about water damage
Dunwoody is one of the most established suburbs tracked here — 51,792 people (2025 estimate), up just 0.3% since 2020[3]. On the map that's 13.0 square miles holding 3,986 residents per square mile, the 1st densest of the suburbs here; it sits entirely in DeKalb County, with ZIP codes 30338, 30360, 30346[4].
Dunwoody mixes 7% of homes built since 2010 and 44% before 1980[2]: new supply lines and water heaters in one house, aging pipe and original valves in the next — so where a leak starts depends a lot on the address.
Dunwoody is split across 3 ZIP codes: 30338 (74% of the city's land), 30360 (17% of the city's land), 30346 (8% of the city's land)[7].
The tracked suburbs closest by are Sandy Springs (3.3 mi W), Roswell (7.1 mi N) and Johns Creek (8.9 mi NE)[4].
100 flood-insurance claims have come from Dunwoody-area ZIP codes (30338, 30360, 30346) since 1978, and $1,157,257 has been paid on them (about $16,073 per paid claim)[1]. 2009 was the worst year, with 34 claims. That is the 7th-most of the 15 Atlanta-area suburbs we cover; for comparison, Sandy Springs (1,429), Roswell (161), and Johns Creek (81). Of the 96 claims rated in a flood zone, 40 were in FEMA's high-risk areas (zones A or V) and 56 outside them (zones B, C or X)[1][8] — flooding here is not only a high-risk-zone problem.
By month of loss, Dunwoody-area flood claims cluster in June (6), August (9), and September (52) — 67 of 100 dated claims[1].
Within 10 miles of central Dunwoody, weather observers filed 35 flood, flash-flood or heavy-rain reports in 2016–2025 (33 flash floods)[5]. Countywide: 1 flood declaration since 2000, latest Severe Storms and Flooding (DR-1858, 2009)[6]. Nearby: Sandy Springs (35), Roswell (21), and Johns Creek (16).
44% of Dunwoody's 23,491 housing units predate 1980[2] — the highest share of the 15 Atlanta-area suburbs we cover (Sandy Springs (29%), Roswell (22%), and Johns Creek (4%)). Aging supply lines and valves are the usual hidden-leak suspects in houses that old.
44% of Dunwoody households rent[2]: tenants should report leaks to the landlord in writing, with photos.
Among the 15 suburbs tracked here, Dunwoody stands out for the most flood reports nearby (35, tied with Sandy Springs)[5], the highest pre-1980 housing share (44%)[2], and the oldest housing (by median year built) (1984)[2].
How a leak spreads inside a wall
Give a leak time and it travels — outward across the floor, upward into drywall by capillary action.
Dunwoody storm calendar
Within 10 miles of Dunwoody, 2016–2025: 33 flash-flood reports and 2 heavy-rain reports[5]. Peak: spread out; June, July, and August held 57%. Busiest year 2017 (9); 4 of 10 years had none. Busiest month June 2017 (5). Latest: flash-flood report, Aug 29, 2023, 3.5 mi out.
| Month | Flash flood | Flood | Heavy rain | All |
|---|---|---|---|---|
| Jan | 4 | – | – | 4 |
| Feb | 4 | – | – | 4 |
| Apr | 2 | – | – | 2 |
| Jun | 3 | – | 2 | 5 |
| Jul | 5 | – | – | 5 |
| Aug | 10 | – | – | 10 |
| Sep | 3 | – | – | 3 |
| Nov | 1 | – | – | 1 |
| Dec | 1 | – | – | 1 |
Get water damage help in Dunwoody
Requests go to Water damage restoration contractors serving the Dunwoody area — ZIP codes 30338, 30360, 30346.
Before you pick up the phone: what a restoration crew does first
Shared walls and ceilings: Dunwoody homes by building type
56%[2] of Dunwoody's homes share walls, floors or ceilings with a neighbour (multi-unit buildings alone: 49%, the 2nd-highest multi-unit share of the 15 Atlanta-area suburbs we cover). Water crosses those lines: in an attached or stacked unit, tell the neighbour and the association or landlord right away, and check whose policy covers which part of the damage.
After detached houses, the biggest group is 50 or more units: 4,872 of 23,491 housing units[2].
| Building type | Units | Share | Margin of error |
|---|---|---|---|
| Detached house | 10,402 | 44.3% | ±521 |
| Attached house (townhouse, rowhouse) | 1,476 | 6.3% | ±339 |
| Duplex (2 units) | 49 | 0.2% | ±34 |
| 3–4 units | 317 | 1.3% | ±190 |
| 5–9 units | 1,275 | 5.4% | ±311 |
| 10–19 units | 2,074 | 8.8% | ±458 |
| 20–49 units | 2,991 | 12.7% | ±669 |
| 50 or more units | 4,872 | 20.7% | ±526 |
| Mobile home | 35 | 0.1% | ±47 |
Margins of error are the Census Bureau’s 90% intervals; small categories in small cities are rough.
Dunwoody by the numbers
| Measure | Dunwoody | Median of 15 | Difference |
|---|---|---|---|
| Flood reports (10 mi) | 35 | 15 | 20 more |
| Built before 1980 | 44% | 21% | 23 pts higher |
| Median home value | $602,900 | $449,500 | 34% higher |
| Renter-occupied | 44% | 41% | 3 pts higher |
| Owner-occupied | 56% | 59% | 3 pts lower |
| NFIP flood claims (area ZIPs) | 100 | 97 | 3 more |
| Median year built | 1984 | 1994 | 10 years older |
Biggest gaps first. Medians are middle values across the Atlanta-area suburbs we cover, drawn from the same sources.
| City | NFIP claims | Flood reports ≤10 mi | Built before 1980 | Renting |
|---|---|---|---|---|
| Dunwoody | 100 | 35 | 44% | 44% |
| Sandy Springs 3.3 mi | 1,429 | 35 | 29% | 50% |
| Roswell 7.1 mi | 161 | 21 | 22% | 28% |
| Johns Creek 8.9 mi | 81 | 16 | 4% | 20% |
| Alpharetta 9.2 mi | 97 | 18 | 8% | 35% |
| Duluth 10.2 mi | 94 | 15 | 12% | 43% |
| ZIP | Claims | Paid | Busiest year | Outside high-risk zones |
|---|---|---|---|---|
| 30338 | 77 | $1,053,263 | 2009 (27) | 45 of 76 |
| 30360 | 23 | $103,994 | 2009 (7) | 11 of 20 |
| 30346 | 0 | $0 | — | — |
ZIPs extend past city limits. Outside high-risk zones: claims rated in zone B, C or X, of the claims that carry a zone.
| Year | Claims |
|---|---|
| 2024 | 2 |
| 2023 | 2 |
| 2021 | 1 |
| 2020 | 6 |
| 2018 | 4 |
| 2015 | 2 |
| 2013 | 5 |
| 2010 | 2 |
| 2009 | 34 |
| 2008 | 1 |
| 2005 | 2 |
| 2004 | 14 |
| Month | Claims |
|---|---|
| January | 5 |
| February | 5 |
| March | 4 |
| April | 3 |
| May | 1 |
| June | 6 |
| July | 6 |
| August | 9 |
| September | 52 |
| October | 4 |
| November | 2 |
| December | 3 |
| Date | Type | Distance |
|---|---|---|
| Aug 29, 2023 | Flash Flood | 3.6 mi |
| Aug 29, 2023 | Flash Flood | 3.5 mi |
| Aug 28, 2023 | Flash Flood | 2.1 mi |
| Jul 21, 2023 | Flash Flood | 9.9 mi |
| Jul 21, 2023 | Flash Flood | 9.0 mi |
| Jan 4, 2023 | Flash Flood | 6.2 mi |
| Jan 4, 2023 | Flash Flood | 7.4 mi |
| Jan 4, 2023 | Flash Flood | 9.8 mi |
| ZIP (ZCTA) | Share of Dunwoody's land | Share of the ZIP inside the city |
|---|---|---|
| 30338 | 74% | 98% |
| 30360 | 17% | 36% |
| 30346 | 8% | 100% |
Common Dunwoody water damage questions
Do I need flood insurance in Dunwoody?
Homeowners policies exclude outside floodwater[9], and Dunwoody-area ZIPs have 15 NFIP claims in just the last ten years[1].
Which Dunwoody ZIP codes do these crews cover?
30338, 30360, and 30346[7], in DeKalb County. Nearby pages: Sandy Springs (3.3 mi), Roswell (7.1 mi), and Johns Creek (8.9 mi)[4].
Which Dunwoody ZIP code has the most flood claims?
30338, with 77 NFIP claims and $1,053,263 paid[1].
When was the last flood report near Dunwoody?
Aug 29, 2023: a flash flood report 3.6 miles from the city center[5].
A lot of Dunwoody homes predate 1980 — what does that mean for plumbing fixtures and water heater work?
44% of Dunwoody's housing units were built before 1980, 2.6% before 1960[2] — the highest share of the 15 Atlanta-area suburbs we cover. Older supply lines and original shut-off valves are common failure points — know where your main shut-off is before you need it.
I rent in Dunwoody. Who arranges the repair?
44% of occupied Dunwoody homes are rented[2], the 5th-highest share of the 15 Atlanta-area suburbs we cover. Tell your landlord or property manager in writing first; your lease says who arranges repairs.
Sources
- OpenFEMA NFIP claims
- Census ACS 2020–2024 5-year (keyless bulk)
- Census population estimates, Vintage 2025
- Census Gazetteer 2025
- NOAA Storm Events Database
- OpenFEMA disaster declarations
- Census 2020 ZCTA–place file
- FEMA, Flood Zones (link unverified)
- FEMA FloodSmart (link unverified)
Data pulled Sep 28, 2026. Full citations and method.