The question of statute of limitations in a professional negligence setting is little different from that the same issue in a legal malpractice setting.  CPLR 214(6) is the applicable statute in both and both have the concept of continuing representation. Board of Mgrs. of 141 Fifth Ave. Condominium v 141  Acquisition Assoc. LLC  2019 NY Slip Op 31555(U)  June 3, 2019
Supreme Court, New York County Docket Number: 651426/2013  Judge: Saliann Scarpulla discusses it here:

“On a motion to dismiss a claim pursuant to CPLR 3211 (a) (5), the defendant bears the “initial burden of establishing, prima facie, that the time in which to sue has expired.” New York City Sch. Constr. Auth. v Ennead Architects LLP, 148 AD3d 618, 618 (1st Dept 2017) (internal quotation marks and citation omitted). “[T]he three-year limitation of CPLR 214 (6) controls in a negligence action against a professional, such as an architect or engineer.” !FD Constr. Corp. v Corddry Carpenter Dietz & Zack, 253 AD2d 89, 91-92 (1st Dept 1999). The claim “accrues when the professional relationship ends, usually upon issuance of the final payment certificate under the contract.” Id. at 92; see also New York City Sch. Constr. Auth., 148 AD3d at 618. “If the action is commenced after the statute of limitations expires, a plaintiff may be able to avoid dismissal by asserting that the statute of limitations is tolled by the continuous representation doctrine, or at least showing that there is an issue of fact as to its application[.]” Sendar Dev. Co., LLC v CMA Design Studio P.C., 68 AD3d 500, 503 (1st Dept 2009). The doctrine of continuous representation “applies when a plaintiff shows that he or she relied upon an uninterrupted course of services related to the particular duty breached.” Id. ”

“In opposition, J Construction fails to raise a question of fact as to whether the statute of limitations for professional negligence was tolled or is otherwise inapplicable. It simply argues that, in light of Board of Manager’s allegation that, as of 2014, work on the Building was ongoing, discovery may reveal that GACE and MG continued to provide services beyond the dates of their purported final invoices. J Construction’s unsupported surmise is insufficient to defeat the motions to dismiss, as there is no indication that GACE or MG were part of such work. “If the statute is to be avoided, there should be some factual demonstration in the answering papers.” Sparacino, 82 AD2d at 753 (rejecting plaintiff’s contention that dismissal on statute oflimitations grounds was premature). “