Princeton HPC backs Witherspoon Street redevelopment with conditions; raises concerns about upper‑level massing

The Princeton Historic Preservation Commission on a unanimous roll call vote authorized staff to prepare an advisory report recommending approval of Witherspoon and Lee LLC’s application for a major site plan and C and D variances at 254 Witherspoon Street.

The commission praised the project’s historic research and community benefits — including a proposed neighborhood laundromat — but repeatedly asked the applicant to reduce the visual prominence of a new upper‑level studio element and to resolve several technical details before the zoning board hearing.

Commission staff member Elizabeth Satterfield summarized the application and historic findings and noted the New Jersey State Office of Historic Preservation had issued an opinion of eligibility that expanded the district’s boundaries. The proposal would add a two‑story addition connected to the existing 1920 colonial‑revival house by a recessed glass “hyphen,” provide space for three tenants (the applicant’s architecture office, a future mercantile tenant and a laundromat in the basement), and include sustainability features such as solar panels, a green roof and geothermal heat exchange. Joshua Zinder, the applicant and managing partner of Joshua Zinder Architecture and Design, told the commission he lives three blocks away and stressed the team’s community ties and intent to preserve the original building: “I happen to live about 3 blocks away, from this property on Moore Street.”

Why it matters: the commission’s recommendation will go to the Zoning Board, which has legal authority on the requested variances. The project would change building massing on a visible corner within the Witherspoon‑Jackson historic district and introduce a neighborhood laundromat that supporters said will serve local residents who now travel across town.

Discussion and conditions

During a long hearing, commissioners said the application had strong historic research (Hunter Research report, 09/09/2024) and used accepted preservation approaches — notably a glass hyphen — to separate new work from the contributing structure. Still, multiple commissioners and staff expressed concern about the studio’s roofline and fenestration facing Lee Avenue, saying that from some angles the new mass reads as an oversized element that draws attention from the historic house. Commissioner Charlotte Friedman said the studio element “looks great” from Witherspoon but is “a little jarring” from Lee Avenue; others called for simplification of the upper windows and consideration of a color or material change to reduce contrast.

The commission also asked the applicant to: submit a landscape plan (missing from materials seen by some commissioners), ensure all new utilities are underground, standardize LED color temperature (staff recommended 2,700 K for all exterior fixtures), refine the accessible route details (the proposed slope surface is under 1:20 and therefore does not require handrails, but commissioners asked about landings and the required wall within the front setback), and clarify the shared‑parking agreement for a space that straddles the property line. The applicant said they have a signed letter of intent (LOI) with a neighbor for daytime use of a shared parking space.

Legal and zoning context

Satterfield told the commission the property is Block 6907, Lot 17 in the B‑1 zone within the Witherspoon‑Jackson Historic District (Type‑2 designation); the application requires a number of variances (the applicant identified nine variances and two design waivers) and a conditional use because one parking space sits on a property line and will be shared. The commission’s vote was advisory; the Zoning Board will make final decisions on variances and conditional use.

Public comment and community impact

Resident and nonprofit leader Liana Jahnke said the laundromat would meet a clear local need: “literally the next day, a resident came up to me and said, ‘I can’t believe we’re gonna have a laundromat,’” she said, describing neighborhood interest and the burdens some families face traveling to the existing laundromat. Commissioners noted that a laundromat at this corner had historic precedent and that the proposed ground‑floor service has broad neighborhood support.

Formal action

Commissioner Shirley moved and Bridal seconded a motion to authorize preparation of an advisory report recommending zoning‑board approval, subject to the comments and conditions summarized by staff. The chair called the roll: Miss Satterfield, Mister Shafskin, Miss Howard, Mister Endersby, Miss Charlotte Friedman and Chairperson Capizzoli all voted yes; the motion carried unanimously.

What remains

The commission requested the applicant return with clarified materials before the zoning hearing: a landscape plan, consistent lighting specifications, confirmation on railing heights and any refinements to the studio massing or materials to reduce its visual prominence from Lee Avenue. Staff will incorporate those points into the advisory memo to the Zoning Board.

Material samples, the applicant’s physical model and additional documentation were available to commissioners during the meeting; the applicant said they will coordinate with local historical organizations on plaque text commemorating the house’s history.