How to research the history of your house in London

London has been recording itself for a very long time — parish clerks were keeping registers here when New York was still a Dutch trading post. The catch is that the depth and the digitisation don't line up: the parish record reaches back to the 1500s, but the easy, online, one-click ownership trail is far shallower here than it is in, say, New York City. Knowing where the free online record ends and the archive begins is the whole game. Here is how to play it.

Start with ownership: HM Land Registry

England's land registry is one of the most complete in the world — but it is a register of title, not a free public deed feed. There are two layers worth understanding.

The freely available, live layer is Price Paid Data: HM Land Registry publishes every reported residential and commercial sale in England and Wales from 1995 onward as open government data, with the price, the date, and the address. It won't tell you who built your house in 1890, but it gives you the modern sales history at no cost — and it's the piece Plot reads automatically for UK addresses.

For anything deeper — the actual chain of owners, the title plan, historic transfers — you order the title register and title deeds from HM Land Registry for a small per-title fee. Older pre-registration deeds (registration only became compulsory across all of England and Wales in 1990) often survive only in private hands, with a solicitor, or deposited at a local archive.

Find the people: the census and electoral registers

The decennial census is the backbone of English house history. The 1841 through 1921 censuses are all open to the public (England and Wales release after 100 years, so 1921 opened in 2022; the 1931 census was destroyed by fire in 1942, and 1941 was never taken because of the war). The censuses name everyone in the household with ages, occupations, and birthplaces. The catch for the budget researcher: the digitised, indexed census images are licensed to Findmypast and Ancestry — both paid, though many UK public libraries give free in-branch access, and the 1939 Register (a wartime population snapshot) fills part of the gap to 1921.

Between censuses, electoral registers (held at the London Metropolitan Archives and the British Library) list enfranchised residents by address year on year, and trade and street directories — Kelly's above all — let you look an address up directly to see who lived or traded there.

The London Metropolitan Archives

If there is one building to know, it is the London Metropolitan Archives (LMA) in Clerkenwell. The LMA holds the records of London's parishes, the old Metropolitan Board of Works and London County Council, rate books, electoral registers, school records, and an enormous photographic and map collection. Much of its catalogue is searchable online (and a growing slice is digitised), but the richest material is consulted in the reading room. Rate books in particular — the parish and borough records of who paid the local rates on each property — are one of the best ways to track occupancy of a London house across the 18th and 19th centuries, filling the years the census misses.

The listed-buildings register

If your house is architecturally or historically notable, it may be listed. Historic England maintains the National Heritage List for England (NHLE) — Grade I, Grade II, and Grade II — and each entry carries a statutory description that is itself a ready-made architectural history. The NHLE is free and searchable, and it's the live heritage layer Plot reads for English addresses: where a graded building sits near your address, its own official listing description can surface alongside the page. Many London neighbourhoods also sit within conservation areas*, designated by the borough, whose appraisal documents describe the area's development in detail.

Maps and fire-insurance plans

To watch your block change, London is exceptionally well mapped. The Ordnance Survey large-scale town plans (from the 1860s) show buildings to scale; Charles Booth's poverty maps of the 1880s–90s colour every street by the wealth of its residents, an extraordinary social document you can browse free through the LSE. For building-level detail, the Goad fire-insurance plans (Charles E. Goad Ltd, the British counterpart to America's Sanborn maps) recorded commercial districts block by block — construction, use, height — and survive at the British Library and the LMA. The National Library of Scotland hosts a superb free, georeferenced run of historic OS maps you can overlay on the modern city.

The parish record: the deep past

This is where London's depth shows. Parish registers of baptisms, marriages, and burials survive in many City and inner-London parishes from the mid-1500s, and wills proved in the Prerogative Court of Canterbury (now at The National Archives) can carry property descriptions back centuries. These won't be address-keyed — London streets renamed and renumbered constantly — so tracing a specific house back that far is patient, name-led detective work, usually done in the LMA or The National Archives at Kew. It is slower than the American deed-chain method, but it reaches further back in time.

Where Plot fits

For a London address, Plot builds a real page from the open record: it geocodes the address, reads HM Land Registry Price Paid for the post-1995 sales, surfaces nearby NHLE listed buildings with their statutory descriptions, and gathers Wikimedia imagery and the cross-referenced public record around it. It's honest about the limits — the deep ownership chain still means ordering the title from HM Land Registry, and the census sits behind the paid genealogy services — but it assembles the freely available layer into one place in a minute, so you know exactly where to dig next.

Look up your London house →