How OTTO answers.

For the question

How long do we have to submit reserved matters and commence development on an outline planning permission?

1. [1]TCPA-1990 · 92 Outline planning permission“(2) Subject to the following provisions of this section, where outline planning permission is granted for development consisting in or including the carrying out of building or other operations, it shall be granted subject to conditions to the effect—(a) that, in the case of any reserved matter, application for approval must be made not later than the expiration of three years beginning with the date of the grant of outline planning permission; and”
2. [2]TCPA-1990 · 92 Outline planning permission“(b) that, in the case of outline planning permission for the development of land in England, the development to which the permission relates must be begun not later than the expiration of two years from the final approval of the reserved matters or, in the case of approval on different dates, the final approval of the last such matter to be approved;”
3. [3]TCPA-1990 · 92 Outline planning permission“(4) The authority concerned with the terms of an outline planning permission may, in applying subsection (2), substitute, or direct that there be substituted, for the periods ... referred to in that subsection such other periods respectively (whether longer or shorter) as they consider appropriate.”
4. [4]TCPA-1990 · 92 Outline planning permission“(5) They may also specify, or direct that there be specified, separate periods under paragraph (a) of subsection (2) in relation to separate parts of the development to which the planning permission relates; and, if they do so, the condition required by paragraph (b) or (c) of that subsection shall then be framed correspondingly by reference to those parts, instead of by reference to the development as a whole.(6) In considering whether to exercise their powers under subsections (4) and (5), the authority shall have regard to the provisions of the development plan and to any other material considerations.”
5. [5]TCPA-1990 · 92 Outline planning permission“(3) If outline planning permission is granted without the conditions required by subsection (2), it shall (subject to subsections (3A) to (3D)) be deemed to have been granted subject to those conditions.”
6. [6]TCPA-1990 · 92A Extension of outline planning permission etc in event of legal challenge“(1) This section applies where a person is given permission by a court to bring proceedings challenging the validity, in respect of the development of land in England, of—(a) a grant (or deemed grant) of outline planning permission, or(b) the approval of reserved matters under such a permission.(2) Any reserved matters application period or implementation period that is running when the court gives permission to bring the proceedings is extended by one year.”
7. [7]TCPA-1990 · 92A Extension of outline planning permission etc in event of legal challenge“(3) If a party to the proceedings is given permission to appeal to the Court of Appeal against a decision determining the challenge, any reserved matters application period or implementation period that is running at that time is extended by one year.(4) If a party to the proceedings is given permission to appeal to the Supreme Court against a decision determining the challenge, any reserved matters application period or implementation period that is running at that time is extended by two years.”

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