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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C.&nbsp;&nbsp;20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM 8-K</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CURRENT REPORT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Pursuant to Section 13 or 15(d) of</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>the Securities Exchange Act of 1934</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Date of Report (Date of earliest event reported):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>June 5, 2012</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 24pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CORNERSTONE CORE PROPERTIES</B></P>

<P STYLE="font: 24pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>REIT, INC.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Exact name of registrant as specified in
its charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 38%; font-weight: bold; text-align: center">Maryland</TD>
    <TD STYLE="width: 1%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 30%; font-weight: bold; text-align: center">000-52566</TD>
    <TD STYLE="width: 1%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 30%; font-weight: bold; text-align: center">73-1721791</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">(State&nbsp;or&nbsp;Other&nbsp;Jurisdiction&nbsp;of&nbsp;Incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(I.R.S. Employer Identification</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Number)</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>1920 Main Street, Suite 400</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Irvine, California 92614</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Address of principal executive offices)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(949) 852-1007</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Registrant&rsquo;s telephone number, including
area code)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Not Applicable</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Former name or former address, if changed
since last report)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligations of the registrant under any of the following provisions.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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    <TD STYLE="width: 7%"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT></TD>
    <TD STYLE="width: 93%">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 7%"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT></TD>
    <TD STYLE="width: 93%">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14d-2(b)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 7%"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT></TD>
    <TD STYLE="width: 93%">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 7%"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT></TD>
    <TD STYLE="width: 93%">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<TD STYLE="width: 0%"></TD><TD STYLE="width: 1in; text-align: left"><B>Item&nbsp;1.01</B></TD><TD STYLE="text-align: justify"><B>Entry
                                                                                       Into a Material Definitive Agreement</B></TD>
</TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><I>20100 Western Avenue Lease Agreement</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">On June 5, 2012, COP-Western Avenue, LLC
(the &ldquo;Lessor&rdquo; or the &ldquo;Company&rdquo;), our wholly owned subsidiary, entered into a lease agreement (the &ldquo;Agreement&rdquo;)
with Fujitsu Ten Corporation of America, a California corporation (&ldquo;Fujitsu&rdquo; or the &ldquo;Lessee&rdquo;) to lease
approximately 56,520 square feet of space at the 20100 Western Avenue, Torrance, California property (&ldquo;Western&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Under the terms of the Agreement, the
lease has a term of seven years and expires on May 31, 2019. The monthly base rent is $43,269 and automatically increases six
percent every two years. The Lessee shall receive free rent for the first eight months of the lease term and one-half of monthly
free rent under the lease during the months of February 2013 through May 2013. Additionally, the Company will reimburse the Lessee
for up to $600,000 of site improvements constructed by the Lessee.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The Lessee shall have the one-time right
to terminate the lease any time between July 1, 2017 and November 30, 2017 provided that Lessee shall (i) deliver a written notice
to Lessor at least one hundred eighty days prior to the termination date, (ii) on or before the termination date, deliver funds
to Lessor in an amount equal to all unamortized leasing costs, which include brokerage commissions, tenant improvements and abated
rent, and (iii) have paid to Lessor all rent due under the lease for the period prior to the termination.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Further, the Lessee has one option to
renew the lease for a term of sixty months with written notice no later than nine months prior to the expiration of the lease.
If the option is exercised, the monthly base rent will be adjusted to reflect the current fair market rent and escalations for
comparable space at other similar office/industrial buildings within the Torrance, California area.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Subsequent to the execution of the lease
agreement, Western is 100% occupied.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>SIGNATURE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Pursuant to the requirements of the Securities Exchange Act
of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">CORNERSTONE CORE PROPERTIES REIT, INC.</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 4%">&nbsp;</TD>
    <TD STYLE="width: 46%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>Dated:&nbsp;&nbsp;June 11, 2012</TD>
    <TD>By:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid">/s/ Stephen I. Robie</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Stephen I. Robie,</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Chief Financial Officer</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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{"company-data": {"conformed-name": "Cornerstone Core Properties REIT, Inc.", "cik": "0001310383", "assigned-sic": "6798", "irs-number": "731721791", "state-of-incorporation": "MD", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-52566", "film-number": "12900141"}, "business-address": {"street1": "1920 MAIN PLAZA", "street2": "SUITE 400", "city": "IRVINE", "state": "CA", "zip": "92614", "phone": "949-852-1007"}, "mail-address": {"street1": "1920 MAIN PLAZA", "street2": "SUITE 400", "city": "IRVINE", "state": "CA", "zip": "92614"}, "former-company": [{"former-conformed-name": "Cornerstone Core Properties REIT", "date-changed": "20050516"}, {"former-conformed-name": "Cornerstone Realty Fund Inc", "date-changed": "20041202"}]}
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):
June 5, 2012
CORNERSTONE CORE PROPERTIES
REIT, INC.
(Exact name of registrant as specified in
its charter)
Maryland
000-52566
73-1721791
(State or Other Jurisdiction of Incorporation)
(Commission File Number)
(I.R.S. Employer Identification
Number)
1920 Main Street, Suite 400
Irvine, California 92614
(Address of principal executive offices)
(949) 852-1007
(Registrant's telephone number, including
area code)
Not Applicable
(Former name or former address, if changed
since last report)
Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligations of the registrant under any of the following provisions.
£
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
£
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14d-2(b)
£
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)
£
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)
2
Item 1.01
Entry
                                                                                       Into a Material Definitive Agreement
20100 Western Avenue Lease Agreement
On June 5, 2012, COP-Western Avenue, LLC
(the "Lessor" or the "Company"), our wholly owned subsidiary, entered into a lease agreement (the "Agreement")
with Fujitsu Ten Corporation of America, a California corporation ("Fujitsu" or the "Lessee") to lease
approximately 56,520 square feet of space at the 20100 Western Avenue, Torrance, California property ("Western").
Under the terms of the Agreement, the
lease has a term of seven years and expires on May 31, 2019. The monthly base rent is $43,269 and automatically increases six
percent every two years. The Lessee shall receive free rent for the first eight months of the lease term and one-half of monthly
free rent under the lease during the months of February 2013 through May 2013. Additionally, the Company will reimburse the Lessee
for up to $600,000 of site improvements constructed by the Lessee.
The Lessee shall have the one-time right
to terminate the lease any time between July 1, 2017 and November 30, 2017 provided that Lessee shall (i) deliver a written notice
to Lessor at least one hundred eighty days prior to the termination date, (ii) on or before the termination date, deliver funds
to Lessor in an amount equal to all unamortized leasing costs, which include brokerage commissions, tenant improvements and abated
rent, and (iii) have paid to Lessor all rent due under the lease for the period prior to the termination.
Further, the Lessee has one option to
renew the lease for a term of sixty months with written notice no later than nine months prior to the expiration of the lease.
If the option is exercised, the monthly base rent will be adjusted to reflect the current fair market rent and escalations for
comparable space at other similar office/industrial buildings within the Torrance, California area.
Subsequent to the execution of the lease
agreement, Western is 100% occupied.
2
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act
of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
CORNERSTONE CORE PROPERTIES REIT, INC.
Dated:  June 11, 2012
By:
/s/ Stephen I. Robie
Stephen I. Robie,
Chief Financial Officer