Public Buildings Savings and Reform Act of 2013

(Sec. 3) Prohibits the Administrator from leasing space at an amount below the average annual rental rate thresholds that exceeds the maximum rental rate established for the respective geographical location, unless notification is given to the House Committee on Transportation and Infrastructure and the Senate Committee on Environment and Public Works (Committees) in writing at least 10 days before the execution of such lease. Requires the Administrator, not less than 30 days before entering into any lease-construction agreement, to notify the Committees of the intent to enter into such an agreement.

(Sec. 4) Requires the Administrator to submit a list to the Committees of all leases, including lease-construction agreements, entered into by GSA for the previous fiscal year, with information on the size of the space, location, and annual rental rates.

(Sec. 5) Requires the Administrator to include in the prospectus submitted to Congress for a proposed federal building a justification for the space requested.

(Sec. 6) Prohibits the Administrator from beginning construction of any new courthouse if: (1) construction has not begun on or before the date of enactment of this Act, and (2) the design and construction of the new courthouse fails to comply with specified courtroom sharing requirements.

(Sec. 7) Directs the Inspector General of GSA to review the the Public Buildings Service's (PBS's) internship program, recent graduate program, and any similar program and report to the Committees on the costs associated with each program, the value added to PBS by the programs, recommendations on improving the programs, and compliance with federal hiring laws, practices, and standards.

(Sec. 8) Prohibits funds in the Federal Buildings Fund from being made available for bonuses, performance awards, or similar expenditures for a member of the Senior Executive Service until the Administrator reports the findings and conclusions of a review of PBS's system of awarding bonuses and performance awards.

Requires the Administrator to submit to the Committees a report on conferences proposed to be hosted by PBS for the subsequent fiscal year, including the purpose of, and a detailed budget for, each conference.

(Sec. 9) Requires the Administrator to submit a proposed budget for PBS administrative expenses for the following fiscal year. Prohibits amounts from the Federal Buildings Fund from being used for PBS administrative expenses unless a specific amount is authorized for a given fiscal year.

(Sec. 10) Terminates resolution approvals for projects adopted by the Committees unless a lease is executed or a construction, alteration, repair, design, or acquisition project is initiated with five years of such approvals.

(Sec. 11) Limits the authority of executive agencies to lease space for a public building. Requires the Administrator to comply with requirements of the Small Business Act when using commercial leasing services.

Authorizes the Administrator to delegate authority to manage the procurement of leases to an appropriate executive agency. Requires the Administrator to report to the Committees on the effectiveness of such delegation authority.

(Sec. 12) Requires the Administrator: (1) to develop, implement, and report on a method of measuring actual utilization rates of GSA's owned and leased inventory of public buildings space and a plan for incorporating such utilization rates into performance metrics for owned and leased buildings by region; (2) with tenant agencies, to certify annually the actual number of personnel housed in each building in the GSA inventory; (3) to maintain a database of utilization rates and metrics; and (4) to submit to the Committees all agency Real Property Cost Savings and Innovation Plans submitted pursuant to the Management Procedures Memorandum 2013-02 of the Office of Management and Budget (OMB).

(Sec. 13) Requires the Administrator to notify the Committees of: (1) any increase of more than 5% of an estimated maximum cost, or (2) any increase or decrease of 5% or more in the scope or size of a project. Prohibits any increase or decrease of more than 10% in the scope or size of a project unless an amended prospectus is submitted and approved.

(Sec. 14) Requires the Administrator to report to the Committees on how PBS, through its acquisition activities, conserves existing urban, suburban, and rural resources, encourages the development and redevelopment of urban, suburban, and rural areas, and reduces costs to PBS and improves the social, economic, environmental, and cultural conditions of the communities in such areas.