Sono Gardens does not turn over frequently. With 125 units and a long history of owner-occupants, active listings here are uncommon enough that buyers who wait for a property to appear on Zillow often miss it. The complex sits in South Norwalk, one of the more active sub-markets within Norwalk CT real estate, and the combination of gated access, townhouse layouts, and a price point well below the Norwalk median tends to attract buyers quickly when units do become available. If you are watching this complex, contact The Engel Team directly rather than relying on public listings. Availability changes quickly and off-market awareness matters here.
MLS data shows 16 recorded sales at Sono Gardens across multiple years, with closed prices ranging from $65,000 to $305,000 and a median sale price of $128,500 across the full history. The more useful data point for current buyers is what has happened in 2025: three sales closed, with prices at $189,050 in April, $240,000 in June, and $275,000 in December. That trajectory within a single year reflects the broader Norwalk market shift, where the median sales price has declined approximately 6.9%, with most of that drop concentrated in the first half of 2025.
Unit sizes in the MLS record range from 582 square feet for one-bedroom flats to 2,576 square feet for a four-bedroom unit. The median price per square foot across all recorded sales is approximately $136. Two-bedroom units at 884 square feet have sold between $120,000 and $275,000 depending on year and condition. Three-bedroom units at 1,092 square feet have ranged from $70,000 to $305,000. The spread is wide, which tells buyers two things: condition and timing matter significantly here, and low-end comps from 2016 and 2019 should not be used to anchor a current offer.
| Unit | Date | Price | Bed/Bath | SqFt | HOA/mo | Tax/yr |
|---|---|---|---|---|---|---|
| APT G11 | 12/30/2025 | $275,000 | 2/1 | 884 | $358 | $3,249 |
| APT F9 | 12/11/2025 | $305,000 | 3/1 | 1,092 | $448 | $3,070 |
| APT A12 | 06/27/2025 | $240,000 | 2/1 | 884 | $512 | $3,199 |
| APT I8 | 04/22/2025 | $189,050 | 3/1 | 1,092 | $448 | $3,585 |
| B10 | 09/21/2022 | $230,000 | 3/1 | 1,092 | $600 | $2,490 |
| F5 | 04/07/2022 | $125,000 | 1/1 | 582 | $319 | $1,654 |
| F4 | 12/07/2021 | $120,000 | 1/1 | 582 | $319 | $1,470 |
| A9 | 11/08/2019 | $70,000 | 2/1 | 884 | $433 | $1,956 |
| I6 | 05/16/2019 | $127,000 | 3/1 | 1,092 | $541 | $2,418 |
| F10 | 05/31/2018 | $137,000 | 2/1 | 1,326 | $443 | $2,089 |
| G4 | 01/05/2018 | $120,000 | 2/1 | 884 | $433 | $2,089 |
| A10 | 01/03/2018 | $120,000 | 2/1 | 884 | $443 | $2,089 |
| B2 | 10/23/2017 | $80,000 | 2/1 | 1,326 | — | $2,071 |
| F5 | 01/27/2017 | $65,000 | 1/1 | 582 | — | $1,784 |
| H10 | 11/09/2016 | $130,000 | 3/1 | 1,092 | — | $2,377 |
| D1 | 10/17/2016 | $145,000 | 4/2 | 2,576 | — | $2,707 |
Sono Gardens is a 125-unit gated condominium community at 15 Madison Street in South Norwalk, built in 1968. The complex takes its name from the SoNo neighborhood, the section of Norwalk that runs along the waterfront and has developed a concentrated mix of residential and commercial activity over the past two decades. At 125 units, Sono Gardens is large enough to have a functioning homeowners association with resources but small enough that neighbors know each other. The gated entry is a distinguishing feature. Most Norwalk CT condos at this price point are not gated, which gives Sono Gardens a practical security and privacy characteristic that buyers coming from apartment backgrounds often prioritize. The complex was built in 1968, which means structural systems, plumbing, and common area infrastructure are at an age where buyers should ask specific questions before closing.
Sono Gardens offers one-, two-, and three-bedroom townhouse-style units across its 125 condominiums. The townhouse format means vertical layouts with separate levels rather than single-floor flats, which translates to more separation between living and sleeping areas and a different feel from standard stacked-unit buildings. One-bedroom units in the MLS record come in at 582 square feet. Two-bedroom units run 884 to 1,326 square feet depending on the specific floor plan. Three-bedroom units have been recorded at 1,092 square feet. There is also at least one four-bedroom, two-bath unit on record at 2,576 square feet, which suggests a larger floor plan exists in the complex, though buyers should verify current availability of that configuration directly. The townhouse style typically includes some degree of private entry and, in many cases, a small outdoor space, though specific unit-level details vary and should be confirmed during due diligence.
HOA fees in the recent MLS record range from $319 to $600 per month, with the complex median listed at $443 per month. The variation between units is notable, and buyers should request the current fee schedule for the specific unit they are considering before making assumptions based on any single comp. In a building built in 1968, the condition of reserves is a critical due diligence item. Ask the association directly for the most recent reserve study, the current reserve balance, and whether any special assessments have been levied or are currently under discussion. Buildings of this age often require capital expenditures for roof systems, plumbing, HVAC, and common area infrastructure, and the difference between a well-funded and underfunded HOA at a complex like this can materially affect your cost of ownership and resale potential.
Property taxes in the recent sales record range from $1,470 to $3,585 per year, which reflects both assessed value differences between units and likely reassessment timing. Buyers should pull the current mill rate from the City of Norwalk tax assessor and verify the assessed value of the specific unit before projecting carrying costs.
Renovation variation is real here. Units that sold in the $65,000 to $120,000 range in 2016 and 2017 and the $189,000 range in early 2025 may be in very different condition from units that closed at $275,000 to $305,000 in late 2025. Price does not always track condition in a complex with this much sales history, and buyers should walk the unit carefully and budget for updates accordingly. For resale, renovated units in this complex have demonstrated the ability to price meaningfully above unrenovated equivalents, as the 2025 sales range illustrates. Confirm rental policies and owner-occupancy ratios with the HOA before closing if investment or future flexibility is part of your decision.
Sono Gardens sits at a price point that is well below the Norwalk median of approximately $660,000 across all property types, which makes it one of the more accessible entry points into Norwalk homes for sale. That accessibility, combined with gated access and a townhouse layout, creates real demand when units become available. For buyers, the practical challenge is that this complex does not list frequently and the comp set is thin enough that pricing requires careful analysis rather than simple average calculations. The 2025 sales record shows a $116,000 spread between the April and December closings, which is a wide range for units of similar size in the same year.
For sellers, understanding where your unit sits within that range before pricing matters. Condition, floor plan, and HOA fee all affect where a buyer will land. The Engel Team works with buyers and sellers at Sono Gardens and across the broader Norwalk condominium market. If you are considering a purchase or thinking about listing, contact us for a specific valuation based on your unit’s floor plan, condition, and current inventory. Do not rely on automated estimates for a complex with this much price variation between units.
© 2025 DOUGLAS ELLIMAN REAL ESTATE. ALL MATERIAL PRESENTED HEREIN IS INTENDED FOR INFORMATION PURPOSES ONLY. WHILE THIS INFORMATION IS BELIEVED TO BE CORRECT, IT IS REPRESENTED SUBJECT TO ERRORS, OMISSIONS, CHANGES OR WITHDRAWAL WITHOUT NOTICE. ALL PROPERTY INFORMATION, INCLUDING, BUT NOT LIMITED TO SQUARE FOOTAGE, ROOM COUNT, NUMBER OF BEDROOMS AND THE SCHOOL DISTRICT IN PROPERTY LISTINGS SHOULD BE VERIFIED BY YOUR OWN ATTORNEY, ARCHITECT OR ZONING EXPERT. EQUAL HOUSING OPPORTUNITY. 
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