EXHIBIT 5.1
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                              OPINION RE: LEGALITY

THE O'NEAL LAW FIRM, P.C.
668 North 44th Street, Suite 233
Phoenix, Arizona 85008
(602) 267-3855 (602) 267-7400 (fax)

                    OPINION OF COUNSEL AND CONSENT OF COUNSEL

TO:     Board of Directors
        Ecostructure Corporation

RE:     Registration Statement on Form SB-2

Dear Mr. Winstein:

As counsel to Ecostructure Corporation, a Nevada corporation (the "Company"), we
have participated in the preparation of the Company's  Registration Statement on
Form SB-2 filed with the  Securities  and  Exchange  Commission  pursuant to the
Securities  Act of 1933,  as amended,  relating to the  registration  of 500,000
shares of the  Company's  $0.001  par value  common  stock.  As  counsel  to the
Company,  we have  examined  such  corporate  records,  certificates  and  other
documents of the Company, and made inquiries of such officers of the Company, as
we have deemed necessary or appropriate for purposes of this opinion. Based upon
such examinations, we are of the opinion that the shares of the Company's common
stock, when issued in the manner set forth in the Registration  Statement,  will
be validly  issued,  fully paid and  non-assessable  shares of the shares of the
common stock of the Company.  We hereby consent to the inclusion of this Opinion
as an exhibit to the  Registration  Statement  on Form SB-2 filed by the Company
and the reference to our firm contained therein under "Legal Matters".

                                                   Sincerely,



                                                   /s/ THE O'NEAL LAW FIRM, P.C.
                                                   -----------------------------
                                                   Phoenix, Arizona

DATED: January 15, 2004