Work / Retrospective CGT valuation · LB Bromley
— Case study · 02 / 2026

April
2015.

A retrospective Red Book opinion of value, reconstructing market conditions for a detached family home in the London Borough of Bromley, as at the CGT rebasing date over a decade ago.

Red Book CGT · Retrospective Residential · Dual-date
Indicative elevation, detached family home, not to scale
Instruction
Market Value
Retrospective & current
Sector
Residential / private client
Detached family home
Location
LB Bromley
South-east London
Reporting basis
Dual-date
RICS Red Book · VPS 4 / VPGA 5

A private client needed a Red Book valuation of their detached family home in Bromley, not for a sale, but for their accountant.

The property had been held for a number of years, and a retrospective opinion of value was required as at April 2015, the base date commonly adopted for capital gains tax calculations following the introduction of rebasing rules. This is exactly the kind of instruction Taylor Berlin handles regularly.

The task was to reconstruct market conditions as they stood over a decade ago. A retrospective valuation isn’t a guess from memory; it’s a structured piece of forensic work. Three inputs carried most of the weight.

  1. 01 Comparable evidence from the period, transactions in the months either side of the valuation date, drawn from Land Registry, agents’ archives and our own files.
  2. 02 Local market knowledge of the Bromley residential market at the time, how stock was moving, what was selling at premium, and what buyers were prioritising in this specific corner of south-east London.
  3. 03 Macro context, the December 2014 Stamp Duty reforms and the pre-election caution of early 2015, both of which were visibly influencing buyer behaviour in the relevant window.

The result was a dual-date Red Book report providing both the April 2015 retrospective figure and a current market value, giving the client’s accountant everything needed to complete the CGT calculation with confidence.

— Reporting basis
VPS 4 · Two valuation dates · One report

Reported on a Red Book basis under VPS 4 with retrospective reasoning under VPGA 5, both opinions, the working and the comparable evidence, contained in a single document.

— Date one

06 Apr ’15.

Retrospective · CGT rebasing
— Date two

Today.

Current market value
— Outcome

A document the accountant could file without hesitation.

— Context

The April 2015 window.

A market still digesting the December 2014 Stamp Duty reforms, then quietening into the pre-election caution of spring 2015. Both visible in the transactional evidence, and both addressed in the report’s reasoning.

  • BoroughLB Bromley
  • AssetDetached residential
  • TenureFreehold
  • Date one06 April 2015
  • Date twoCurrent
  • PurposeCGT calculation