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Planning agent

Sillitoe Architecture

An architecture practice. 6 planning applications on PlanIndex. On the register from 2025 to 2026.

Where they work

What they file

  1. Householder50%
  2. Heritage and listed buildings33%
  3. Conditions17%

Track record

The 6 most recent applications naming this firm

  • 26/00622/LBC Granted

    19 High Street Llandaff Cardiff CF5 2DY

    Replace existing Roof Structure, Install Flush Fitting PV panels to rear roof of main house and approved extension. Additional Roof light to rear Roof.

    Decided 1 May 2026 Heritage and listed buildings
  • 26/00392/HSE Granted

    18 Nant-fawr Road Cyncoed Cardiff CF23 6JR

    Single storey rear extension with raised patio.

    Decided 18 Jun 2026 Householder
  • 25/02937/DOC Decided

    19 High Street Llandaff Cardiff CF5 2DY

    Discharge of Conditions 3 (Method statement for cement removal), 5 (Structural reinforcement details), 6 (Roof works details), 7 (Joinery details), 8 (Dormer details), 9 (Extension details), 10 (Boundary treatment details) of 25/01465/LBC

    Decided 29 Apr 2026 Conditions
  • 25/02403/HSE Awaiting decision

    19 High Street Llandaff Cardiff CF5 2DY

    Erect 2 No gates to the boundary with the highway and install a domestic air source heat pump.

    Submitted 17 Oct 2025 Householder
  • 25/01465/LBC Granted

    19 High Street Llandaff Cardiff CF5 2DY

    Single storey rear extension, rear dormer extension, roof light to rear and other associated external alterations including a new front gate and wall, replacement gutters and drainpipes, roof repair and renewal, new and replacement windows, and stone repairs. Internal alterations to the property.

    Decided 1 Oct 2025 Heritage and listed buildings
  • 25/01464/HSE Granted

    19 High Street Llandaff Cardiff CF5 2DY

    Single storey rear extension, rear dormer loft conversion, roof light to rear and other associated external alterations including a new front gate and wall, new gutters and drainpipes, and the replacement and repair of various windows, doors and stonework.

    Decided 1 Oct 2025 Householder

The full track record

Trade members see everything this firm has filed, filter it by council and outcome, and get an email the day it files again.

See the full track record

From council registers and Companies House. Counts describe the records we hold, not a firm's complete history. Request a correction or removal.