During the six months ended June 30, 2021, we acquired five operating properties in asset acquisitions, consisting of FBI – Knoxville, ICE – Louisville, USAO – Louisville, USAO – Springfield, and NWS – Kansas City for an aggregate purchase price of $111.4 million. We allocated the aggregate purchase price of these acquisitions based on the estimated fair values of the acquired assets and assumed liabilities as follows (amounts in thousands):

	Total
Real estate
Land	$	5,623
Building		87,067
Acquired tenant improvements		7,127
Total real estate		99,817
Intangible assets
In-place leases		8,539
Acquired leasing commissions		2,765
Above-market leases		301
Total intangible assets		11,605
Intangible liabilities
Below-market leases		(1	)
Total intangible liabilities		(1	)
Purchase price	$	111,421

We did not assume any debt upon acquisition of these properties. The intangible assets and liabilities of operating properties acquired during the six months ended June 30, 2021 have a weighted average amortization period of 10.69 years as of June 30, 2021. During the six months ended June 30, 2021, we included $2.4 million of revenues and $0.5 million of net income in our Consolidated Statements of Operations related to the operating properties acquired.

During the six months ended June 30, 2021, we incurred $1.0 million of acquisition-related expenses mainly consisting of internal costs associated with property acquisitions.

On June 4, 2021, we sold SSA – Mission Viejo to a third party. Net proceeds from the sale of operating property were approximately $3.3 million and we recognized a gain on the sale of operating property of approximately $0.5 million for the six months ended June 30, 2021.

Real estate and intangibles consisted of the following as of June 30, 2021 (amounts in thousands):

	Total
Real estate properties, net
Land	$	219,242
Building and improvements		2,198,034
Acquired tenant improvements		83,652
Construction in progress		27,564
Accumulated depreciation		(244,197	)
Total Real estate properties, net		2,284,295
Intangible assets, net
In-place leases		262,698
Acquired leasing commissions		64,031
Above market leases		17,881
Accumulated amortization		(183,423	)
Total Intangible assets, net		161,187
Intangible liabilities, net
Below market leases		(73,483	)
Accumulated amortization		51,354
Total Intangible liabilities, net	$	(22,129	)

The following table summarizes the scheduled amortization of the Company’s acquired above- and below-market lease intangibles for each of the five succeeding years as of June 30, 2021 (amounts in thousands):

	Acquired Above-Market Lease Intangibles		Acquired Below-Market Lease Intangibles
2021	$	768	$	(2,577	)
2022		1,452		(4,201	)
2023		1,428		(4,024	)
2024		1,341		(2,877	)
2025		1,286		(2,170	)

Above-market lease amortization reduces Rental income on our Consolidated Statements of Operations and below-market lease amortization increases Rental income on our Consolidated Statements of Operations.