SECOND AMENDMENT TO LEASE

Exhibit 10.1

SECOND AMENDMENT TO LEASE

This SECOND AMENDMENT TO LEASE (this “Amendment”) made on this 1st day of December, 2013, by and between QUALITY INVESTMENT PROPERTIES – WILLIAMS CENTER, L.L.C., a Kansas limited liability company (“Lessor”), and QUALITY TECHNOLOGY SERVICES LENEXA, LLC, a Delaware limited liability company (“Lessee”).

W I T N E S S E T H:

WHEREAS, Lessor and Lessee entered into a lease, dated as January 1, 2009 (the “Lease”), pursuant to which Lessor leased to Lessee (i) 2493 usable square feet of data center space (the “Data Center Space”) located on the first floor of the J. Williams Technology Centre located at 12851 Foster Street, Overland Park, Kansas (the “Building”), and (ii) 7220 rentable square feet of office and common space (the “Office Space”), which was increased to 8639 rentable square feet as of October 1, 2009 (the Office Space and Data Center Space being collectively referred to as the “Leased Premises” or the “Premises”);

WHEREAS, Lessor and Lessee entered into that certain First Amendment to Lease, dated as of March 1, 2013, pursuant to which the size of the Office Space was increased to 30,213 rentable square feet and Lessee was granted an option to extend the term of the Lease for one period of five years; and

WHEREAS, subject to the terms and conditions of this Amendment, Lessor and Lessee desire to decrease the size of the Office Space so that Lessor may reserve a certain portion of the Office Space for its own use.

NOW, THEREFORE, in consideration of the sum of One Dollar ($1.00) and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto mutually covenant and hereby agree as follows:

1. Capitalized terms not otherwise defined herein shall have the meaning given to such terms in the Lease.

2. Section 1.02 of the Lease is hereby deleted in its entirety and replaced with the following:

“1.02 Leased Premises. In consideration of the Rent, terms, provisions and covenants of this Lease, Lessor hereby irrevocably leases, lets and demises to Lessee the exclusive use and possession of (i) 2493 rentable square feet of data center space (the “Data Center Space”) located on the first floor of the J. Williams Technology Centre located at 12851 Foster Street, Overland Park, Kansas (the “Building”) (reserving six (6) cabinets of space and power for Lessor’s use), and (ii) 28,948 rentable square feet of office and common space (the “Office Space”), more particularly depicted on Exhibit A attached hereto and incorporated herein by reference (all of such space being referred to as the “Leased Premises” or the “Premises”).”

3. Section 1.04 of the Lease is hereby amended to reflect that from the date of this Amendment until December 31, 2013, the Monthly Rent for the Office Space shall be $54,277.50/month and $651,330.00/year, and the total Monthly Rent for the Leased Premises shall be $85,777.50/month and $1,029,330.00/year. Commencing on January 1, 2014 and continuing through December 31, 2019, Lessee shall pay Monthly Rent to Lessor for the Office Space in an amount equal to $23.50/square foot for a total of $56,689.83/month and $680,277.96/year. Beginning January 1, 2014 and continuing through December 31, 2018, the total Monthly Rent for the Leased Premises shall be $88,189.83/month and $1,058,277.96/year.

4. Section 1.08 of the Lease is hereby amended to add the following sentence to the end of Section 1.08:

“Notwithstanding anything to the contrary contained herein, Lessor and its affiliates shall have the right to use the Premises for ingress and egress purposes to the extent necessary to gain access to those portions of the Building not being leased by Lessee hereunder.”

5. Section 2.02 of the Lease is hereby amended by deleting the last sentence of the second paragraph of Section 2.02 and replacing it with the following:

“The pro rata share for insurance and taxes is calculated based on Lessee’s percentage occupancy of the Office Space as set forth in Exhibit A.”

6. Section 5.01 of the Lease is hereby amended by adding the following sentence at the end of Section 5.01:

“Lessor shall perform janitorial functions as provided in the Janitorial Cleaning Matrix attached hereto as Exhibit D.”

7. The Lease is hereby amended by attaching to the Lease Exhibit D to this Amendment.

8. Exhibit A of the Lease is hereby deleted in its entirety and replaced with Exhibit A to this Amendment.

9. Except as expressly provided herein, all other terms, conditions, covenants, conditions and agreements as set forth in the Lease remain unchanged and in full force and effect.

10. This Amendment shall be governed by and construed in accordance with the laws of the State of Kansas, without giving effect to its conflict of laws principles.

11. This Amendment and any documents contemplated hereby may be executed in one or more counterparts, all of which counterparts, when taken together, shall constitute one agreement. This Amendment and any documents contemplated hereby may be executed and delivered by facsimile or other electronic transmission and any such execution or delivery shall be fully effective as if executed and delivered in person

IN WITNESS WHEREOF, the parties have executed this Amendment the date first above written.

EXHIBIT A

THE LEASED PREMISES

EXHIBIT D

JANITORIAL MATRIX

J WILLIAMS TECHNOLOGY CENTER - JANITORIAL CLEANING - NIGHT TIME

Janitorial Contract Clarifications: