Orders, Supreme Court, New York County (Manuel J. Mendez, J.), entered April 13, 2015 and August 11, 2015, which, respectively, granted the landlord defendants’ (landlord) motion to dismiss the complaint against them and for an award of attorneys’ fees and costs, and, to the extent appealed from as limited by the briefs, denied plaintiff’s motion to renew, modified, on the law, to declare that the apartment at issue is a legal apartment and no longer subject to rent stabilization, and to deny the motion for legal fees and costs, and otherwise affirmed, without costs.
The complaint in this case alleges that apartment 5B in the subject building, for which plaintiff has been charged market rent since he entered into a one year lease in May 2013, is subject to rent stabilization. The tenant who immediately preceded plaintiff also paid market rent. Prior to that, the apartment was registered with DHCR, with a legal regulated rent of $1,117.42 per month as of July 31, 2002, when, according to DHCR rent records, the apartment became vacant. Landlord asserts that it purposely kept the apartment vacant at that time, waiting until the apartment next door, 5A, also became vacant. When 5A became vacant, landlord commenced a project to add a penthouse to the building and connect it to 5A and 5B, thus creating twin duplex apartments. When plaintiff inquired as to why he was being charged market rate, given the regulated status of the apartment as of July 31, 2002, landlord informed him that the project to convert the unit to a duplex substantially changed the physical character of the apartment so as to entitle landlord to charge a market rate “first rent.” Alternatively, landlord informed plaintiff, the costs of the renovation to the apartment were such that, applying one-fortieth of them to the regulated rent as allowed by the Rent Stabilization Code, brought the rent above the threshold necessary to permit high rent vacancy deregulation.
The complaint alleged that landlord was not entitled to first *624rent for the apartment because, after the conversion to a duplex, the apartment retained the same number of rooms and bathrooms, the same kitchen, plumbing and heating system and electrical wiring, the same amount of useable square footage, and because there was no substantial increase or decrease in the outer perimeter of the apartment. Plaintiff further asserted that landlord did not obtain proper approvals for the renovation until three years after it began charging market rent, and fraudulently obtained a new certificate of occupancy for the building. Plaintiff also alleged that landlord did not expend sufficient funds on individual apartment improvements to justify an increase in the legal regulated rent warranting high rent vacancy deregulation; and that the majority of the work performed in the apartment consisted of repairs and maintenance, which did not qualify as individual apartment improvements under the Code. The first cause of action in the complaint sought a declaratory judgment that the apartment was illegal and that plaintiff had no obligation to pay rent. The second cause of action requested an injunction directing landlord to legalize the apartment. The third cause of action was for a declaratory judgment that the apartment was subject to rent stabilization. The fourth cause of action sought lease reformation and an injunction barring landlord from collecting rent in excess of the lawful stabilized rent. The fifth cause of action sought monetary damages for rent overcharges; and the sixth cause of action requested reimbursement of plaintiff’s attorneys’ fees and costs.
Landlord moved to dismiss the complaint pursuant to CPLR 3211 (a) (1) and (7), and for an award of legal fees and costs. In a supporting affidavit, defendant Nunzio Ruggiero, a principal of defendant 105 West 75th Street LLC, explained that after apartment 5A became vacant in September 2003, landlord decided to create an addition on the roof of the building to create two duplex apartments out of apartments 5A and 5B. An architect prepared plans, which were filed and approved by the Department of Buildings and the Landmarks Preservation Commission. A permit was issued for the new penthouse on the existing roof to be connected to the renovated apartments on the fourth floor of the building, where apartments 5A and 5B were located. In 2003 and early 2004, John & Joseph Bonanno Construction & Development Corp. (Bonanno) constructed the penthouse enclosure and connected it to the apartments, which were also renovated.
Ruggiero attached to his affidavit work permits issued by the DOB in 2003 and 2004 for the renovation of apartments 5A *625and 5B, including the installation of new bathrooms and kitchens, and a staircase to connect to a new penthouse on the existing roof. Ruggiero also attached an invoice from Bonanno dated September 7, 2004, which described the work to be performed, including framing a new penthouse on the roof and a new bathroom, and negotiated checks from January 6, 2003 through September 7, 2004 to Bonanno totaling $184,000, which was exactly the amount on the invoice. In addition, Rug-giero attached to his affidavit an invoice dated February 11, 2004 from Vin-Ray Plumbing & Heating Co. for $25,000, along with checks totaling that amount, indicating that plumbing work was performed in various areas, including the penthouse floor.
In opposition, plaintiff submitted an affidavit in which he asserted that he was the senior cost manager at a global consultancy company that offered a range of services to the construction and property industry, was a member of the Construction Financial Management Association, and a chartered surveyor. Based on that experience, he opined that the rooftop structure was different from the structure in the approved plans, because the plans permitted a penthouse covering 18 feet of the roof, but the actual structure covered 35 feet, and the work was to be performed on apartments 4A and 4B, not 5B.
Plaintiff stated that contrary to industry practice, the construction contract did not detail the scope of work or break out the costs for each element of the work, the Bonanno invoice was not marked “paid in full,” some of the services listed on the invoice could not be verified, and only three of the checks were paid on or after the date of the invoice. Plaintiff opined that, based on his professional experience and expertise, landlord did not spend $100,000 on renovations to the apartment.
In reply, landlord submitted the affidavits of tenants who occupied apartments 5A and 5B before the penthouse was added. The prior occupant of 5B averred that during her residency the premises she occupied consisted of a one-bedroom apartment on the top floor of the five-story building, with nothing above the apartment except for the roof. The former occupant of 5A stated that in 2002, when 5B became vacant, Ruggiero asked him to relocate so that a penthouse addition could be constructed on the roof, making 5A and 5B duplexes, and he agreed to move. He further asserted that the two penthouses on the roof, which did not previously exist, were constructed and connected to the apartments with internal staircases, increasing the size of each apartment.
*626Supreme Court granted landlord’s motion to dismiss the complaint, and ordered an inquest as to the amount of reasonable costs and attorneys’ fees incurred by landlord in defending the action. The court determined that the documentary evidence submitted by landlord refuted the allegations of the complaint and showed that the apartment was vacant prior to the renovations and that a newly created duplex apartment was constructed, which did not exist previously. The court found that the 2002 certificate of occupancy for the building showed that the building did not include rooftop living space, and that the work permits and subsequent certificates of occupancy demonstrated that additional living space was constructed, entitling landlord to “first rent,” without rent stabilization restrictions. The court further found that the invoices and checks payable to Bonnano and the plumbing contractor showed that landlord spent approximately $200,000 for the renovation, which also entitled it to increase the rent by one-fortieth of the cost per apartment. The court noted that this increased the legal rent to well over $2,000 per month, the threshold amount required to remove an apartment from rent stabilization. Finally, the court awarded landlord its legal fees and expenses pursuant to a provision in the lease that requires plaintiff to reimburse landlord’s “legal fees and disbursements for legal actions or proceedings brought by [landlord] against [plaintiff] because of a Lease default by [plaintiff] or for defending lawsuits brought against [plaintiff] because of [plaintiff’s] actions.”
Plaintiff moved to renew and reargue. He asserted that the court did not properly credit his expert affidavit, that a financial statement of landlord’s failed to establish an expenditure of $200,000 on major capital improvements or renovation, and that the DOB had received complaints about, and issued violations concerning, the penthouse. The court denied the motion, finding that none of the evidence presented on the motion was newly discovered, nor did plaintiff establish that the court misapprehended or overlooked añy issue of fact or law.
Dismissal of a complaint pursuant to CPLR 3211 (a) (1) is only appropriate where the documentary evidence presented conclusively establishes a defense to the plaintiff’s claims as a matter of law (Leon v Martinez, 84 NY2d 83, 88 [1994]). The documents submitted must be explicit and unambiguous (see Bronxville Knolls v Webster Town Ctr. Partnership, 221 AD2d 248, 248 [1st Dept 1995]). In considering the documents offered by the movant to negate the claims in the complaint, a court must adhere to the concept that the allegations in the *627complaint are presumed to be true, and that the pleading is entitled to all reasonable inferences (see Leon, 84 NY2d at 87-88). However, while the pleading is to be liberally construed, the court is not required to accept as true factual allegations that are plainly contradicted by documentary evidence (Robinson v Robinson, 303 AD2d 234, 235 [1st Dept 2003]).
The documentary evidence submitted by landlord was designed to refute plaintiff’s claim that the conversion of the apartment into a duplex did not meet the criteria for first rent or high rent vacancy deregulation. A landlord may charge first rent, pursuant to the Rent Stabilization Code, where the landlord “substantially alters the outer dimensions of a vacant housing accommodation, which qualifies for a first rent equal to or exceeding the applicable amount qualifying for deregulation” (9 NYCRR 2520.11 [r] [12]) which in this case, was “$2,000 or more per month” (9 NYCRR 2520.11 [r] [4]). Stated somewhat differently, first rent is permitted “when the perimeter walls of the apartment have been substantially moved and changed and where the previous apartment, essentially, ceases to exist, thereby rendering its rental history meaningless” (Matter of 300 W. 49th St. Assoc, v New York State Div. of Hous. & Community Renewal, Off. of Rent Admin., 212 AD2d 250, 253 [1st Dept 1995]). This Court has described the test for whether alterations qualify for first rent as “reconfiguration plus obliteration of the prior apartment’s particular identity” (Matter of Devlin v New York State Div. of Hous. & Community Renewal, 309 AD2d 191, 194 [1st Dept 2003], lv denied 2 NY3d 705 [2004]).
In Matter of 300 W. 49th St. Assoc., this Court offered examples of the types of alterations contemplated by the policy — namely, a two-bedroom apartment being split into two studio apartments, or two units being combined into one larger apartment (212 AD2d at 253-254). In both that case, where the landlord substantially remodeled the apartment but it remained “essentially intact” (id. at 254), and Devlin, where the landlord relocated a wall so as to remove 86 square feet of space and add it to the neighboring apartment (309 AD2d at 192), this Court found that the landlord was not entitled to charge first rent. In contrast, the landlord was found to be entitled to charge first rent where it made “significant dimensional changes to a single-floor apartment to create a new (duplex) apartment prior to tenant’s occupancy” (446-450 Realty Co., L.P. v Higbie, 30 Misc 3d 71, 73 [App Term, 1st Dept 2010]).
Even if a landlord does not perform the type of alterations *628necessary to charge first rent, it may escape rent regulation if it expends enough money renovating the apartment such that one-fortieth of the expenditure, added to the last regulated rent, brings the rent above the $2,000 threshold. To qualify, the work must fall under one of the categories described in 9 NYCRR 2522.4, which includes a “substantial increase ... of dwelling space” (9 NYCRR 2522.4 [a] [1]).
Landlord satisfied its burden of demonstrating that it made the necessary improvements to qualify for first rent, since it established that it substantially altered the character of the apartment by connecting it to the new penthouse. It did this by submitting the approved plans for the addition, the work permit for the project, the certificates of occupancy from before and after the work, which reflect the absence of the penthouse in 2002 and its presence in 2007, and the contractors’ invoices and proofs of payment. In response, plaintiff points to various infirmities in the individual pieces of evidence. For example, he notes certain discrepancies in the description of the apartments on the different certificates of occupancy, and claims that Ruggiero was not qualified to “self-certify” the certificates of occupancy. He further questions the probative nature of the contractors’ documents, arguing that Bonnano’s invoice does not break out the cost for each item of work and postdates the move-in date for plaintiff’s predecessor, that the checks do not state the apartment where the work that is being paid for was done, or the specific work being paid for, and that several of the checks were issued after plaintiff’s predecessor took occupancy.
We find that none of the documents considered by Supreme Court was, as plaintiff claims, inauthentic. Moreover, they demonstrate in an unambiguous and conclusive fashion the basic premise that landlord made a significant change to the living space, thus satisfying CPLR 3211 (a) (1) and the substantive statutory provisions that led to the rent increase. The plans clearly show the addition of a penthouse, to be attached to the existing apartment with a staircase. This is far from de minimis, and clearly constitutes a “reconfiguration plus obliteration of the prior apartment’s particular identity” within the meaning of Devlin (309 AD2d at 194). The certificates of occupancy and contractors’ documents confirm that the work was done.
Plaintiff’s arguments attacking the documents are unavailing. That the certificates of occupancy submitted by defendants are inconsistent in their descriptions of the number of units in the building does not lead to the conclusion that the work was *629insufficiently significant for purposes of first rent. Viewed together, Bonanno’s invoice and the contractors’ checks establish to our satisfaction that landlord commissioned and paid for the work that is reflected in the new certificate of occupancy. Again, the issue is whether landlord did work that changed the identity of the living space in the apartment, and those documents collectively establish that it did. Further, we are satisfied that the apartment was vacant at the time of the construction work, based on the DHCR registration records before us and the very fact that it would have been impractical to perform a project of that magnitude if the apartment were occupied.
We similarly find that the documents submitted by landlord established that it properly claimed a rent increase based on the costs of its project to substantially increase the space in the apartment. The contractors’ documents (the Bonnano invoice in particular) establish that the essence of the work was to expand the apartment by building the penthouse and combining it with the existing space. Further, the bulk of the work described in the invoice, even if it did not necessarily relate to the apartment expansion, plainly qualifies as improvements. Accordingly, the court was justified in finding that, since the same amount of work was necessary in each apartment, one-half of the costs were attributable to apartment 5B, thus bringing it over the deregulation threshold. The court was also correct in not requiring that landlord delineate between improvements and repairs (see Jemrock Realty Co. LLC v Krugman, 72 AD3d 438, 440 [1st Dept 2010], lv dismissed 15 NY3d 866 [2010]).
We respectfully disagree with the dissent’s view that landlord was required to show conclusively what the apartment looked like before the renovations were performed. The approved plans and certificates of occupancy establish quite clearly that the work resulted in a substantial reconfiguration of the apartment and expansion of the space such that it qualified for first rent. Whether the term “penthouse” has a definitive meaning among architectural and building professionals, it is evident that the new structure added significant space to the apartment and changed its identity in a substantive way. Nor do we think that landlord was required to authenticate the contractors’ documents, where not even plaintiff appeared to question their authenticity, as opposed to their probative value, and where those documents merely bolstered the certificates of occupancy and DOB-approved plans, which were “essentially undeniable” and thus qualified as documentary evidence for *630purposes of CPLR 3211 (a) (1) (Fontanetta v John Doe 1, 73 AD3d 78, 84-85 [2d Dept 2010] [internal quotation marks omitted]). The Bonnano invoice clearly refers to apartments 5A and 5B, thus negating the dissent’s concern that some of the itemized work was for other units or common spaces. In addition, as noted above, the work as contemplated by landlord was to be equally distributed between apartment 5A and 5B, and there is no reason to question why the contractors’ work would not have reflected that intent. Regarding the dissent’s concern whether any new equipment replaced similar equipment that was within the latter’s useful life or that 9 NYCRR 2522.4 (a) (13) precluded landlord’s entitlement to a rent increase, we simply note that plaintiff does not appear to have raised these arguments on appeal.
We further disagree that the fact that the certificates of occupancy and work permits offered by landlord may not have been certified is of any moment. Again, plaintiff offers no reason for us to doubt their basic authenticity. In addition, Morton v 338 W. 46th St. Realty, LLC (45 Misc 3d 544 [Civ Ct, NY County 2014]), on which the dissent relies, is inapposite. In that case, the issue before the court was whether the landlord knowingly applied for an exemption for rent regulation to which it was not entitled (id. at 547). The basis for the claimed exemption was a substantial rehabilitation of the building pursuant to 9 NYCRR 2520.11 (e) (id. at 547-548). The court noted that the certificate of occupancy presented by the landlord indicated that the number of apartments in the building had doubled, but that “[w]ithout knowing the scope of the work performed,” it could not determine whether the landlord’s predecessor (which had done the work) may have had a good faith belief that it was entitled to an exemption (id. at 553). Here, of course, we know the scope of the work based on the approved plans and the contractors’ documents.
Finally, under paragraph 19 (A) (5) of the lease, plaintiff was required to reimburse the landlord defendants’ legal fees and expenses only where the action was brought based on his default or the costs were incurred in defending lawsuits because of his actions. This action does not fit into either category. As a result, the court improperly awarded landlord its legal fees and costs.
Concur — Acosta, J.R, Mazzarelli, Manzanet-Daniels and Webber, JJ.