New Residential Construction and Development Projects Happening in Nassau County in 2026

Nassau County is seeing more new residential construction activity in 2026 than it has in well over a decade. The combination of state-level housing mandates, two major funding programs targeting Long Island, and pent-up demand from buyers who have been competing for a historically thin resale inventory has pushed municipalities and developers to move forward on projects that were stalled or still in the planning phase just two years ago.

State Pressure and Local Response

New York State's Housing Compact, which set regional housing production targets for every county, has been a central driver. Nassau County municipalities that update their zoning to accommodate more residential density become eligible for state infrastructure dollars and low-interest financing. Several villages and towns have responded by rezoning parcels near Long Island Rail Road stations, allowing for mid-rise apartments and mixed-use buildings that would have been rejected outright five years ago.

The practical result is that new residential projects are moving through permitting and into construction at a faster pace in 2026 than residents are used to seeing in Nassau. This is still a county defined by its existing mid-century housing stock, but the pipeline of new units is real and growing.

How Much New Supply Is Actually Coming

Tracking active new construction communities across Nassau County right now, listing platforms show roughly 195 active new-home communities in the Nassau-Suffolk area, with a meaningful share concentrated in Nassau. These range from single-lot teardown rebuilds priced from the high $700,000s to luxury townhome communities with base prices north of $1.5 million. The volume is not comparable to a Sun Belt market, but for a built-out suburban county where vacant land is scarce, the current level of activity is notable.

2. State-Funded Programs Driving New Housing in Nassau County

Two specific state programs are directly funding new residential construction in Nassau County in 2026, and understanding them helps explain where new units are appearing and at what price points.

Long Island Investment Fund Awards

Governor Hochul announced over $26 million in Long Island Investment Fund awards to support new housing across Long Island, with Nassau County projects among the recipients. These awards, administered through Empire State Development, target shovel-ready projects that add residential units, prioritize mixed-income development, and often include a share of below-market-rate units. You can read the full announcement directly on the Governor's official press release. The practical effect for Nassau County is that several projects which lacked gap financing are now moving into construction or completing final permitting in 2026.

These awards tend to cluster around downtown village cores and transit corridors because those locations score highest on the state's scoring criteria: walkability, proximity to employment, and existing infrastructure capacity. For buyers, that means the newest residential buildings are appearing in places with the shortest walks to LIRR platforms and the most established retail and dining streets.

Long Island Forward Housing Program

A separate $10 million Long Island Forward Housing Program, administered by Empire State Development, is specifically targeting housing expansion in both Nassau and Suffolk counties. This program focuses on workforce and moderate-income housing, meaning units priced to serve households earning between 80 and 120 percent of the area median income. For Nassau County, where median household income sits well above the state average, this translates to units priced roughly in the $350,000 to $550,000 range for ownership, and monthly rents in the $1,800 to $2,800 range for rental projects.

Empire State Development published the details of this program and its eligibility criteria, which you can review on the ESD press release page. First-time buyers in particular should be aware that some of the units created through this program come with income eligibility requirements and resale restrictions, so it is worth verifying terms before making an offer on any project that received these funds.

3. Where the New Construction Is Concentrated

New residential construction in Nassau County in 2026 is not evenly distributed. It is clustering in three distinct geographic patterns, each with different housing types and price points.

Transit-Oriented Development Corridors

The LIRR spine running through Nassau County is the single most active corridor for new residential construction right now. Villages within a half-mile walk of stations on the Hempstead Branch, the Port Washington Branch, and the Far Rockaway Branch have seen the most rezoning activity and the most active construction starts. Hempstead village, which sits at the end of its own LIRR branch, has several mixed-use residential projects underway near the station area, adding hundreds of apartment units to a downtown that has historically been underbuilt relative to its transit access.

Mineola, which serves as the county seat and sits on the Port Washington and Oyster Bay branches, has active multifamily construction within two blocks of its station. Projects there are adding four and five-story buildings with ground-floor retail and 80 to 150 residential units per building. Rockville Centre, another dense village with a busy LIRR stop, has approved additional mid-rise residential development along Sunrise Highway and the streets immediately south of the tracks.

If you are weighing a purchase near any of these stations and want to understand how commute times factor into the value equation, the breakdown of what the LIRR commute from Massapequa and Wantagh to Midtown Manhattan actually looks like gives a useful sense of how Nassau County's transit corridors translate into real commute times.

South Shore and Waterfront Infill

Along Nassau's South Shore, new construction is taking a different form: single-family teardown rebuilds and small-scale townhome clusters on formerly underutilized parcels. Communities like Baldwin, Freeport, and Merrick are seeing older ranch homes and cape cods purchased by builders, demolished, and replaced with new construction colonials and center-hall homes priced from the mid-$800,000s to $1.3 million. These are not large-scale community developments; they are individual lots or clusters of two to six homes built by regional builders.

In waterfront-adjacent communities, the teardown-rebuild trend carries a premium. New construction homes within a short distance of Reynolds Channel, South Oyster Bay, or the barrier island crossings are commanding prices in the $1.4 million to $2.2 million range, depending on lot size and finished square footage. Buyers who are drawn to Nassau's waterfront inventory should also review what is available in the existing luxury market, which the guide to luxury waterfront properties in Nassau County covers in detail.

North Shore Village Centers

On Nassau's North Shore, new residential development is concentrated in and around established village centers where zoning has historically been restrictive. Great Neck, Manhasset, and Roslyn have each seen proposals and approvals for boutique residential buildings, typically four to six units, that fit within the existing village fabric without requiring large-scale rezoning. These projects tend to be higher-end, with unit prices starting at $900,000 and routinely exceeding $1.8 million for larger layouts.

Roslyn in particular has active new construction near its harbor area, where a combination of adaptive reuse of older commercial buildings and new-build townhomes is adding residential inventory to a village that has very little turnover in its existing single-family stock. For a deeper look at what the existing market looks like in that area, the Roslyn real estate market guide covers current pricing and inventory context.

4. What Types of Homes Are Being Built

The new construction happening in Nassau County in 2026 spans several distinct product types, each targeting a different buyer or renter. Understanding which category a specific project falls into helps buyers set realistic expectations about price, timeline, and what the finished product will actually look like.

Multifamily and Mixed-Use Projects

The largest projects by unit count are the multifamily and mixed-use buildings going up near LIRR stations. These are typically four to seven stories, with structured parking, amenity floors, and ground-level retail. Unit sizes run from studios at roughly 550 square feet to two-bedroom layouts at 1,100 to 1,300 square feet. Monthly rents in completed buildings of this type in Nassau are currently ranging from approximately $2,400 for a studio to $4,200 for a two-bedroom, depending on location and finish level.

Some of these buildings include a for-sale condominium component alongside the rental units. Condo pricing in new transit-oriented buildings is currently starting around $525,000 for a one-bedroom in less central locations and climbing to $900,000 or more for two-bedroom units in the most in-demand village centers.

Single-Family Infill and Teardown Rebuilds

Single-family new construction in Nassau County almost always takes the form of a teardown rebuild rather than development on raw land, because raw land simply does not exist at scale here. Builders are acquiring older homes priced in the $500,000 to $750,000 range, demolishing them, and constructing new colonials or transitional-style homes of 2,800 to 4,500 square feet. The finished product typically lists between $1.1 million and $1.9 million, with the spread depending heavily on lot size, municipality, and proximity to desirable amenities.

Buyers considering a new-construction single-family home should be aware that many of these projects are sold before or during construction, sometimes with limited ability to customize finishes. The builder contract review process is also meaningfully different from a standard resale purchase, and having an experienced buyer's agent involved from the beginning matters more than most buyers initially expect.

Age-Restricted and Workforce Housing

A portion of the new construction coming online in Nassau County in 2026 is designated for specific income levels or age groups. Age-restricted communities, typically requiring at least one household member to be 55 or older, are appearing in several inland Nassau municipalities where larger parcels allowed for community-scale development. These projects generally offer attached townhome or ranch-style units with low-maintenance exteriors, priced from the mid-$500,000s to the mid-$700,000s.

Workforce housing units, funded partly through the state programs described earlier, carry income eligibility caps and sometimes resale price restrictions. These are genuinely affordable relative to Nassau's overall market, but buyers need to read the deed restrictions carefully before proceeding. If you are currently in a larger home and thinking about whether a smaller new-construction unit might fit your next chapter, the downsizing guide for Nassau County walks through the options and timing considerations in detail.

5. What New Construction Means for Buyers and Sellers Right Now

The increase in new residential construction in Nassau County in 2026 has real implications for both buyers and sellers, and those implications are not the same for each group.

How New Supply Affects Pricing

Nassau County's resale inventory remains historically low in September 2026, and the new construction coming online is not large enough to meaningfully soften prices across the board. What new supply does do is create an alternative for buyers who have been losing bidding wars on resale homes. When a buyer can choose between a three-year-old resale home at $950,000 with deferred maintenance and a brand-new build at $1.05 million with a builder warranty, some of them will choose the new build. That choice takes pressure off the resale market at the margin, particularly in the $900,000 to $1.2 million price band.

Sellers of older homes near active new construction should be aware that buyers will compare their home to the new product. Pricing strategy and presentation matter more in those submarkets than in areas where new construction is absent. The guide to selling a home in Nassau County covers how to position a resale home competitively in the current market.

What Buyers Should Weigh Before Choosing New Construction

New construction in Nassau County comes with real advantages: modern mechanicals, energy-efficient systems, open floor plans, and no immediate capital expenditures. But it also comes with tradeoffs. Builder contracts are written to protect the builder, not the buyer. Completion timelines can slip by months. The neighborhood character around a newly built home may still be evolving if surrounding parcels are also under construction. And property taxes on a newly assessed home can come in higher than a buyer expects, particularly in Nassau County where the assessment process is notoriously complex.

Buyers who are newer to Nassau should also understand that the county's property tax system involves a separate assessment from the municipal tax, and new construction often triggers a full reassessment that can push annual tax bills significantly above what the builder's estimate suggests. Getting an independent estimate from a local tax professional before signing a builder contract is a step worth taking.

How Sellers Should Think About Competing Inventory

For current homeowners thinking about listing, the rise in new construction is a factor worth understanding but not one that should delay a decision to sell. The new units coming online are mostly at price points above $800,000 and in product types, condos, townhomes, age-restricted communities, that do not directly compete with a well-maintained single-family resale home. The buyer pools overlap at the margins but are largely distinct.

Where sellers do need to pay attention is in submarkets where builder activity is heaviest. If three new-construction colonials are listed within two blocks of your home, a buyer will walk through all four properties and make a direct comparison. Condition, updates, and accurate pricing become more important in those circumstances. Working with an agent who tracks both the resale and new construction markets in real time is essential to getting that pricing right.