SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

SCHEDULE 13G

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13d-2(b)

BCSB Bancorp, Inc.

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

055367106

(CUSIP Number)

June 30, 2008

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

[_] Rule 13d-1(b)

[X] Rule 13d-1(c)

[_] Rule 13d-1(d)


CUSIP No. 055367106
 ---------------------

1. NAME OF REPORTING PERSONS
 I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

 Castine Capital Management, LLC

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [_]
 (b) [X]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5. SOLE VOTING POWER

 0

6. SHARED VOTING POWER

 190,540

7. SOLE DISPOSITIVE POWER

 0

8. SHARED DISPOSITIVE POWER

 190,540

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 190,540

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES

 [_]
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 6.11%

12. TYPE OF REPORTING PERSON

 CO


CUSIP No. 055367106
 ---------------------

1. NAME OF REPORTING PERSONS
 I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

 Paul Magidson

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [_]
 (b) [X]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

 United States

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5. SOLE VOTING POWER

 0

6. SHARED VOTING POWER

 190,540

7. SOLE DISPOSITIVE POWER

 0

8. SHARED DISPOSITIVE POWER

 190,540

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 190,540

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES

 [_]
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 6.11%

12. TYPE OF REPORTING PERSON

 IN


CUSIP No. 055367106
 ---------------------

Item 1(a). Name of Issuer:

 BCSB Bancorp, Inc.
 ____________________________________________________________________

Item 1(b). Address of Issuer's Principal Executive Offices:


 4111 East Joppa Road, Suite 300
 Baltimore, MD 21236
 United States of America
 ____________________________________________________________________


Item 2(a). Name of Persons Filing:


 Castine Capital Management, LLC
 Paul Magidson
 ____________________________________________________________________

Item 2(b). Address of Principal Business Office, or if None, Residence:


 Castine Capital Management, LLC
 One International Place, Suite 2401
 Boston, MA 02110
 United States of America

 Paul Magidson
 c/o Castine Capital Management, LLC
 One International Place, Suite 2401
 Boston, MA 02110
 United States of America
 ___________________________________________________________________

Item 2(c). Citizenship:


 Castine Capital Management, LLC - Delaware
 Paul Magidson - United States
 ____________________________________________________________________

Item 2(d). Title of Class of Securities:


 Common Stock, par value $0.01 per share
 ____________________________________________________________________

Item 2(e). CUSIP Number:


 055367106
 ____________________________________________________________________

Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b)
 or (c), Check Whether the Person Filing is a:


 (a) [_] Broker or dealer registered under Section 15 of the Exchange Act.

 (b) [_] Bank as defined in Section 3(a)(6) of the Exchange Act.

 (c) [_] Insurance company as defined in Section 3(a)(19) of the Exchange
 Act.

 (d) [_] Investment company registered under Section 8 of the Investment
 Company Act.

 (e) [_] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

 (f) [_] An employee benefit plan or endowment fund in accordance with
 Rule 13d-1(b)(1)(ii)(F);

 (g) [_] A parent holding company or control person in accordance with
 Rule 13d-1(b)(1)(ii)(G);

 (h) [_] A savings association as defined in Section 3(b) of the Federal
 Deposit Insurance Act;

 (i) [_] A church plan that is excluded from the definition of an
 investment company under Section 3(c)(14) of the Investment
 Company Act;

 (j) [_] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).
 ____________________________________________________________________

Item 4. Ownership.


 Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.

 (a) Amount beneficially owned:

 Castine Capital Management, LLC: 190,540 shares
 Paul Magidson: 190,540 shares
 ______________________________________________________________________

 (b) Percent of class:

 Castine Capital Management, LLC: 6.11%
 Paul Magidson: 6.11%
 ______________________________________________________________________

 (c) Number of shares as to which Castine Capital Management, LLC has:

 (i) Sole power to vote or to direct the vote
 0
 ______________________,


 (ii) Shared power to vote or to direct the vote
 190,540
 _____________________,

 (iii) Sole power to dispose or to direct the
 disposition of 0
 _____________________,

 (iv) Shared power to dispose or to direct the
 disposition of 190,540
 _____________________.

 Number of shares as to which Paul Magidson has:

 (i) Sole power to vote or to direct the vote
 0
 ______________________,

 (ii) Shared power to vote or to direct the vote
 190,540
 _____________________,

 (iii) Sole power to dispose or to direct the
 disposition of 0
 _____________________,

 (iv) Shared power to dispose or to direct the
 disposition of 190,540
 _____________________.

Item 5. Ownership of Five Percent or Less of a Class.

 If this statement is being filed to report the fact that as of the date
hereof the Reporting Person has ceased to be the beneficial owner of more than
five percent of the class of securities check the following [ ].

 N/A
 _______________________________________________________________________

Item 6. Ownership of More Than Five Percent on Behalf of Another Person.


 If any other person is known to have the right to receive or the power to
direct the receipt of dividends from, or the proceeds from the sale of, such
securities, a statement to that effect should be included in response to this
item and, if such interest relates to more than five percent of the class, such
person should be identified. A listing of the shareholders of an investment
company registered under the Investment Company Act of 1940 or the beneficiaries
of an employee benefit plan, pension fund or endowment fund is not required.

 N/A
 _______________________________________________________________________

Item 7. Identification and Classification of the Subsidiary Which Acquired the
 Security Being Reported on by the Parent Holding Company or Control
 Person.


 If a parent holding company or control person has filed this Schedule,
pursuant to Rule 13d-1(b)(1)(ii)(G), so indicate under Item 3(g) and attach an
exhibit stating the identity and the Item 3 classification of the relevant
subsidiary. If a parent holding company or control person has filed this
Schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating
the identification of the relevant subsidiary.

 N/A
 _______________________________________________________________________

Item 8. Identification and Classification of Members of the Group.


 If a group has filed this Schedule pursuant to Sec.240.13d-1(b)(1)(ii)(J),
so indicate under Item 3(j) and attach an exhibit stating the identity and Item
3 classification of each member of the group. If a group has filed this Schedule
pursuant to Sec.240.13d-1(c) or Sec.240.13d-1(d), attach an exhibit stating the
identity of each member of the group.

 N/A
 _______________________________________________________________________

Item 9. Notice of Dissolution of Group.


 Notice of dissolution of a group may be furnished as an exhibit stating the
date of the dissolution and that all further filings with respect to
transactions in the security reported on will be filed, if required, by members
of the group, in their individual capacity. See Item 5.

 N/A
 ______________________________________________________________________

Item 10. Certifications.


 Certification for Rule 13d-1(c): By signing below each Reporting Person
certifies that, to the best of its knowledge and belief, the securities referred
to above were not acquired and are not held for the purpose of or with the
effect of changing or influencing the control of the issuer of the securities
and were not acquired and are not held in connection with or as a participant in
any transaction having that purpose or effect.


SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

July 22, 2008
(Date)

Castine Capital Management, LLC (1)

By: /s/ Paul Magidson
----------------------------------------
Name: Paul Magidson
Title: Managing Member


By: /s/ Paul Magidson (1)
----------------------------------------
Name: Paul Magidson

(1) These Reporting Persons disclaim beneficial ownership except to the extent of their pecuniary interest therein.


Exhibit A

AGREEMENT

The undersigned agree that this Schedule 13G dated July 22, 2008 relating to the Common Stock, par value $0.01 per share, of BCSB Bancorp, Inc. shall be filed on behalf of the undersigned.

Castine Capital Management, LLC

By: /s/ Paul Magidson
--------------------------------
Name: Paul Magidson
Title: Managing Member


By: /s/ Paul Magidson
--------------------------------
Name: Paul Magidson

SK 21745 0002 903383

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