Union Square is a 43-unit condominium community in Norwalk, CT. Availability here is limited by design — 43 units do not turn over quickly, and when they do, buyers who are already watching the complex tend to move first. The broader Norwalk CT real estate market has softened in recent months, with inventory down roughly 10% and the pace of sales slowing. That context matters for Union Square buyers: there may be slightly more room to negotiate than existed in 2024, but well-priced units at this complex still close. If you want to know what is currently listed or available off-market, contact The Engel Team directly. Active inventory at a 43-unit complex can change in a week.
MLS records show 31 confirmed sales at Union Square. The full price range runs from $151,000 at the low end to $375,000 at the high end. The overall median sale price across that history is $231,500, but that number includes sales from 2016 through 2019 that are no longer useful as pricing benchmarks. The more relevant picture is recent: five sales closed between January 2025 and April 2026, all in the $320,000–$375,000 range.
The most recent sale — Apt 24, closed April 7, 2026 — came in at $375,000 for a 990 sq ft 2-bed/2-bath unit, or roughly $379 per square foot. That is the highest price in the complex’s recorded history. Before that, Apt 26 closed in January 2026 at $320,000, and Apt 23 closed in September 2025 at $330,500. Both were 990 sq ft units. Apt 36, which closed in January 2025 at $321,000, offered slightly more space at 1,056 sq ft.
Unit sizes across all recorded sales run from 990 to 1,056 square feet. The median price per square foot across the full MLS history is approximately $220/SF, but 2025–2026 transactions are tracking closer to $300–$380/SF. Every recorded sale is a 2-bed/2-bath unit.
| Unit | Date | Price | Bed/Bath | SqFt | HOA/mo | Tax/yr |
|---|---|---|---|---|---|---|
| APT 24 | 04/07/2026 | $375,000 | 2/2 | 990 | $329 | $4,709 |
| APT 26 | 01/14/2026 | $320,000 | 2/2 | 990 | $307 | $4,709 |
| APT 23 | 09/26/2025 | $330,500 | 2/2 | 990 | $323 | $4,636 |
| APT 30 | 09/04/2025 | $325,000 | 2/2 | 990 | $305 | $4,709 |
| APT 36 | 01/29/2025 | $321,000 | 2/2 | 1,056 | $310 | $3,534 |
Union Square is located at 4 Union in Norwalk, CT. The complex was built in 1978 and contains 43 units. It is a townhouse-style condominium community, meaning units are arranged vertically rather than stacked as flats. That distinction matters: townhouse layouts typically offer more separation between units, private entry points, and a different living dynamic than a corridor-access apartment building. The complex includes a pool and a clubhouse. For a 43-unit community built in 1978, those are the core shared amenities — this is not a high-rise with a concierge and a fitness center. It is a smaller, lower-density condominium with a residential feel. Union Square sits well below the Norwalk-wide median sale price of $660,000 for all property types, positioning it as one of the more accessible condominium options in the city. Buyers looking at the broader range of Norwalk CT condos will find Union Square competitive on price per square foot relative to newer or larger complexes.
Every recorded sale at Union Square is a 2-bedroom, 2-bathroom unit. There are no studio or 1-bedroom configurations in the MLS record. Unit sizes run from 990 to 1,056 square feet. The difference between the two size bands is modest — roughly 66 square feet — but buyers should confirm which configuration is being offered in any specific listing, since that gap can affect both pricing and layout efficiency. As townhouse-style units, the living space is spread across multiple floors rather than a single flat plane. That means stairs are part of daily life here, which matters to some buyers and not at all to others. Parking and any outdoor space attached to individual units should be confirmed with the listing agent, as those details can vary by unit position within the complex.
HOA fees at Union Square currently run in the $305–$342/month range based on recent sales disclosures. That is a tight band, which suggests a fairly stable fee structure. Property taxes on recently sold units have ranged from $3,534 to $4,709 per year. The higher tax figures on 2025–2026 sales reflect reassessment more than value changes in some cases — buyers should confirm the current mill rate and any pending adjustments with the Norwalk assessor’s office.
Union Square was built in 1978, which means the building systems are now approaching 50 years old. Buyers should request the association’s reserve fund study before going to contract. A complex this age without a healthy reserve balance is a red flag — special assessments become more likely as roofing, mechanical systems, and infrastructure require capital replacement. Ask specifically about the status of the roof, exterior cladding, and any HVAC or plumbing work completed in the past decade.
Renovation variation between units at a complex this age can be significant. Some units may have been updated multiple times; others may still carry 1990s finishes. That variation affects both value and the buyer’s cost basis going in. Request a pre-inspection even in a competitive offer situation.
Rental and pet policies, owner-occupancy ratios, and any pending litigation should be confirmed through the resale package — which is standard disclosure for Connecticut condominium transactions. The resale package will include the declaration, bylaws, budget, reserve study, meeting minutes, and any pending assessments. Do not waive a review of that package. Resale value at Union Square has improved significantly since 2020, but that trajectory is not guaranteed, and buyers should understand what they are buying into at the association level before relying on price appreciation alone.
Union Square is not a waterfront complex, so flood zone and coastal insurance are not primary concerns here. Standard homeowner’s insurance for the unit interior plus the master policy carried by the association is the typical structure. Confirm what the master policy covers and what the unit owner is responsible for insuring independently.
For buyers, the challenge at a 43-unit complex is timing. Units do not come up often, and the five most recent sales show prices compressing into a fairly consistent band around $320,000–$375,000. Knowing what a fair price looks like for a 990 sq ft unit versus a 1,056 sq ft unit — and what condition premium or discount is reasonable — requires someone who has tracked this specific complex, not just Norwalk condos broadly.
For sellers, the April 2026 sale at $375,000 sets a new ceiling for the complex. Whether your unit can meet or beat that figure depends on condition, floor position, and how the Norwalk market performs through the remainder of 2026. The city-wide market has softened, and pricing strategy matters more now than it did in 2023. Overpricing a 990 sq ft unit in a 43-unit complex in a softer market is a faster way to sit than it used to be.
The Engel Team tracks sales at Union Square and across the full range of Norwalk homes for sale. Whether you are a buyer trying to time an entry or a seller trying to price correctly in a shifting market, reach out for a direct conversation about what the data actually supports.
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