Product

A map anyone can use.
An application someone signs.

The data half of Wren is free and always will be. The work half is paid, once, per application. This page is everything on both sides of that line.

Open the map What the paid half costs

Aerial view of a dense London terrace, the kind of street most householder applications are made on — Real satellite imagery over a real London street. Every image on this site is either the product, public data, or a document Wren actually produces. There is no stock photography and no generated imagery anywhere.

Surfaces

What you can actually do

The map

Free

Search any UK address, switch on any of 75 live data layers, draw a boundary and measure it. No account, no trial, no limit. This is the same canvas a chartered planner uses on a paid case.

Site appraisal

Free · 2 credits for the AI verdict

Draw a boundary and get every constraint that touches it, an approval likelihood with the factors that moved it, your council's own performance, the documents your application will need, and an itemised price.

Ask Wren

3 free, then 1 credit

A planning assistant that answers from an ingested corpus of national policy and your council's adopted plan, shows you the passages it read, and verifies its own citations before it finishes speaking.

Document drafting

14 types

Wren drafts the documents your route and your site's constraints actually require, under a rule that fails a draft rather than letting an unverifiable citation through. 12 of the 14 have a specimen you can open right now.

Case management

Included in every case fee

One chartered professional carries your case end to end: reviewing, signing, filing with the council, answering the case officer, and recording validation, consultation and the decision as each one happens.

Council intelligence

378 authorities

Approval rates, decision times, adopted plans, levy rates, housing land supply and the policies your application will be judged against. Free to read, indexed, and honest about what we do not hold.

Appeals

£799

A Statement of Case built from your reasons for refusal, the council's own policy text and the decision record, put to a Planning Inspector by written representations.

The line

Where free stops and paid starts.

It is a clean line and it is worth being blunt about, because every competitor draws it somewhere less comfortable.

Free, permanently, no account

The map and all 75 live layers, in 14 groups
Draw, measure, import GeoJSON, KML or a shapefile
Every constraint that touches a boundary you draw
Approval likelihood, with the factors that moved it
Your council's own approval rate and decision times
All 378 council profiles
A submission checklist from your council's own validation list
The fee your council will charge, calculated

Paid, once, per application

The documents your council requires, drafted in full
A named chartered planner reviewing and revising them
Their signature, their membership number, their insurance
Filing with the council, and the council's fee at cost
Answering the case officer's questions on your behalf
Validation, consultation and the decision, recorded as they happen

Householder	£499
Minor	£1,995
Major	£6,995
Appeal	£799

Plus your council’s statutory fee, passed on at cost.

Deliverables

The 14 documents

Which of these you receive is decided by your application route and by what the map finds on your site, not by a package you picked.

Every document, in detail

Also

Smaller things that matter

A watch list that emails you when something is filed near a site you care about, keyed on when we first saw an application rather than on the date it was filed, because the gap between those two is a median of 33 days and a recency window built on the wrong one never fires.

A viability calculator with a residual land value, a sensitivity tornado and a spreadsheet export. A pipeline board across your saved sites. Shareable read-only links to a site or to a whole map view. Land Registry title and company search. Street View beside the map. A command palette across everything you own.

And a Model Context Protocol server, so if you work in an AI client you can ask it for site constraints, council policy, planning history, an approval prediction or comparables directly.

Start here

The fastest way to understand this is to draw something.

Put a line around any site in the country and watch what comes back. It takes about fifteen seconds and costs nothing.

Open the map How the service works