Section 4.55 modifications in 2026: 14-day approvals and reviews
Section 4.55 modifications in NSW after the 2026 reforms: the new no impact 4.55(1) pathway, 14-day deemed approval, 6-month reviews and DCA referrals.
Section 4.55 modifications to approved DAs, and structured responses when council asks for more information.
Two things stall approved and pending projects: a design change after consent, and a council letter asking for more information. Both have a planning answer.
For changes to an approved DA, URBA prepares the section 4.55 modification application with the comparison of approved and proposed, the assessment of the change and the updated compliance tables. For requests for information, we prepare a point-by-point response with the planning justification and coordinate the consultant inputs so the DA is not deferred a second time.
We read the consent or the council letter and tell you what is actually being asked.
Which items need drawings, which need reports, which need argument.
A single, complete submission to the Planning Portal.
We stay on the file until the determination.
Section 4.55(1A) is for modifications of minimal environmental impact and is assessed quickly. Section 4.55(2) covers larger changes where the development remains substantially the same as approved, and involves notification and a fuller assessment.
Councils usually set 14 to 28 days. If more time is needed, ask before the deadline; most councils grant a short extension in writing.
Across Sydney, Western Sydney, the Central Coast, the Hunter, the Illawarra and regional NSW. See the areas we service for council-specific notes, including Blacktown, Penrith, The Hills, Liverpool, Camden and the Central Coast.
Section 4.55 modifications in NSW after the 2026 reforms: the new no impact 4.55(1) pathway, 14-day deemed approval, 6-month reviews and DCA referrals.
Section 4.55 modifications let you change an approved DA in NSW without a new application if it stays substantially the same. The 3 pathways…
Send the address and your plans or concept. A URBA planner will confirm the pathway and send a fixed-fee proposal, usually within one business day.