Bartons Lens
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RICS-Recognised Methodology

Comparables that took 4 hours now take 40 seconds

One postcode in. A defensible Excel report out - 48 configurable columns: Land Registry sold prices, HPI-indexed to today, price per sqm, plus planning and flood context. Every row verifiable at source.

See How It Works
48 Configurable Columns HPI-Indexed Values Land Registry Verified
SW1A 1AA 2 miles
Land Registry sales matched 2,314 rows
EPC floor areas attached £/sqm ready
HPI indexed to current value
Planning, flood and crime layers
Building comparables... comparables.xlsx
48 columns HPI-indexed Every row LR-verified
Powered by authoritative UK open data
HM Land Registry EPC Register UK House Price Index ONS Census Environment Agency Police.uk Ordnance Survey RICS RTPI HM Land Registry EPC Register UK House Price Index ONS Census Environment Agency Police.uk Ordnance Survey RICS RTPI

How your property price comparables are built

From postcode to professional Excel report in three simple steps.

1

Enter Your Search

Input your scheme postcode, then choose property types, search radius, date range and filters.

2

Automated Pipeline

We pull Land Registry transactions, match EPC floor areas and index to current values with HPI, then overlay planning, flood, crime, schools and transport - all automatically.

3

Download Your Report

Get a professional Excel file - up to 48 configurable columns of current-day indexed values, price per sqm and sqft, and Land Registry verification links on every row.

The open data behind your property price comparables

We cross-reference official UK government open data and layer locality signals on top to build the most accurate comparables list possible.

HM Land Registry

Price Paid Data - every residential property transaction in England and Wales.

  • Sold price and date
  • Full property address
  • Property type and tenure
  • New build / existing properties
EPC Register

Energy Performance Certificates - floor area data for size-based analysis and price per square metre calculations.

  • Total floor area (sqm)
  • Domestic
  • Address matching
  • 90-day intelligent cache
UK House Price Index

ONS House Price Index - indexes historical sold prices to current-day values at local authority level.

  • Current-day value calculation
  • Local authority level accuracy
  • Monthly index resolution
  • Automatic area lookup
Locality Layers

Planning, risk and amenity context attached to every comparable so you can defend the choice of comparables, not just the price.

  • Planning constraints (listed, conservation, Article 4)
  • Environment Agency flood zones
  • Police.uk crime, ONS population + census
  • Schools and transport proximity

Your time is the most expensive input in every valuation

THE OLD WAY

Manual comparables run

Trawling Land Registry and portals~90 min
Matching floor areas from EPCs~60 min
Indexing prices to today~45 min
Planning, flood and locality checks~45 min

Total per report ~4 hours
WITH BARTONS LENS

One search. One download.

  • Every sale since 1995, sub-second search
  • EPC floor areas matched automatically
  • HPI indexation to current-day value, built in
  • Planning, flood, crime and amenity layers attached
  • Audit-ready: every row links to Land Registry

Total per report under 60 seconds
At 10 reports a month, that is around 40 hours of chargeable time back - from £19.
“

A comparables run that used to eat half my morning now takes under a minute - and every figure links back to the Land Registry. My reports have never been easier to defend.

JR
James Rowland
Residential Valuer, Manchester
Built for the report you stand behind

Everything a defensible
comparable needs

No black boxes. Bartons Lens shows its workings - source data, indexation and verification links - so your professional judgement stays front and centre.

HPI-indexed values

A 2016 sale, restated at today's value - automatically, at local authority accuracy.

Audit trail on every row

Direct links to the original Land Registry transaction. Fact-check any figure in one click.

Search your way

Postcode sector, district, area - or true radius search up to 10 miles.

Residential

New builds, existing stock, freehold & leasehold.

Planning and risk built in

Listed buildings, conservation areas, flood zones and crime - flagged per comparable.

Teams and REST API

Multi-user access and a JSON API with long-lived tokens for full automation.

Proof, not promises

400+ professionals. 12,000+ reports.

Saves 3.5 hrs/report

HPI indexation and £/sqm out of the box is exactly what I needed. It follows the methodology I would use manually - just instantly and consistently.

SP
Sarah Patel MRICS
Chartered Surveyor, Bristol
Whole team on API

We run it through the API across the whole team. Planning and flood overlays per comparable save us a mountain of separate lookups.

DH
David Hughes
Development Consultancy, Leeds
Paid for itself day 1

One residual valuation covered the annual subscription. The Land Registry links on every row are what convinced our compliance team.

EW
Emma Whitfield
Valuation Director, London

Simple, Transparent Pricing

Every paid plan includes the full, configurable 48-column Excel output and every locality layer.

Starter

For solo residential valuers

£19 /month

  • 5 residential searches / month
  • 48 configurable columns
  • Postcode sector / district search
  • 1 user
  • Radius search
  • API access

No payment required

Most Popular
Professional

Small teams running mixed-use searches

£89 /month

  • 40 residential searches / month
  • 48 configurable columns
  • Radius search up to 10 miles
  • 2 users
  • API access

No payment required

Developer

High-volume teams and integrations

£249 /month

  • 125 residential searches / month
  • Radius search up to 10 miles
  • 5 users
  • REST API + long-lived tokens
  • Top-up credits available

No payment required

Enterprise

Bespoke: up to 300 searches, 25 users, priority API and custom onboarding.

Cancel anytime · No card required for trial · VAT invoices for your accounts

Built by Property Professionals

Trusted Methodology,
Automated Delivery

Developed by Bartons Planning & Development Consultancy, a team of Chartered Town Planner and Surveyor with deep experience in development viability. This tool automates a manual process that takes hours - following RICS-recognised methodology for creating comparables lists used in residual valuations.

RTPI Chartered
RICS Methodology
Secure & Audited
12
Open Data Sources
48
Excel Columns
80%+
EPC Match Rate
10mi
Search Radius
YOUR NEXT VALUATION IS WAITING

Run your first comparables
search in the next 2 minutes

14 days free. No card. If it does not save you hours on the first report, walk away.

Set up in minutes Cancel anytime RICS-recognised methodology
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© 2026 Bartons Lens · Bartons Planning & Development Consultancy
Data: HM Land Registry · EPC Register · ONS HPI · Environment Agency · Police.uk