Stand on a street of granite setts in an old town centre and it is tempting to assume you are walking on something medieval. Usually you are not. Streets are dug up for sewers, gas, water, electricity and telephone cables, then repaved, patched and relaid. The stones may be older than the surface they now form, and the pattern may be newer than the buildings beside it. Dating a cobbled street means joining physical evidence to paper evidence, and the paper is easier to find than most people expect.
A sett is not a cobble, and the distinction matters. Cobbles are rounded, water-worn stones, usually gathered from a riverbed or beach. Setts are quarried stone, squared off to roughly uniform size. Most British streets described as cobbled are in fact setted, and knowing which you are looking at keeps you honest when you compare a street to archive descriptions of paving work.
Before you open a single map, note what is actually there. Photograph the surface from several angles and from eye level as well as above. Record the stone type, the way it is laid, and the kerb. Granite kerbs and channel stones became standard in towns from the mid-nineteenth century onwards, so a street with neat granite kerbs on both sides is unlikely to be untouched earlier work. Look for gullies and their position, for the camber of the road, and for whether the setts are laid in courses or in a fan or arc pattern.
None of this dates anything by itself. Setts are lifted, stored and relaid, sometimes more than once in a century. Treat the surface as a clue rather than an answer.
Tithe maps are the usual starting point for local research. Following the Tithe Commutation Act of 1836, maps and apportionments were produced for most parishes, mainly from the late 1830s into the 1850s. They show the line of a street, its width, and the buildings along it, but they do not record the surface. What they give you is a firm statement that the street existed by a known date, and roughly how built-up it was.
The apportionment is the useful half. It lists plot numbers, owners, occupiers and land use, so you can see whether a street backed onto a yard, a garden or a row of cottages. If the street is a wide, empty lane on the tithe map and lined with terraces by the 1880s, repaving almost certainly came with the houses.
Depending on the place, you may also find enclosure awards and maps, estate maps, borough boundary plans and early sewer plans. Ask the county record office or local studies library what survives for your parish; the answer varies enormously.
Maps rarely say "setts". What they do show is change, and change is what you are hunting. Look for the point at which a street gains kerb lines on both sides, is widened, acquires a back lane, or is cut through by a tramway. Any of these works involved digging up the surface, and a repaving or resurfacing usually followed.
Note the difference between the surveyed date and the published date. A gap of several years is entirely normal, and it matters when you are trying to pin a paving contract to a map. The National Library of Scotland's map images are free to view online, and most local studies libraries hold printed runs for their own area.
This is where a date becomes possible rather than merely probable. Highway authorities left minutes, surveyors' reports, specifications and contracts, and the language in them is distinctive. Watch for entries mentioning setts, kerbing and channelling, macadam, wood paving, tar spraying and asphalt. A minute recording that a street was tar sprayed or surfaced with bituminous material is a strong hint that a setted surface was being covered, not created.
The authority you need depends on the period. Turnpike trusts looked after many main roads until they were wound up in the late nineteenth century. Local boards of health, highway boards, and later urban and rural district councils and borough councils took on the rest. Sewer plans are particularly valuable, because drains and paving were frequently done in the same scheme.
Search the county record office catalogue under the parish, the board and the borough, then look at the decade either side of every map change you identified. Local newspaper archives often reprinted tenders and council debates, which can supply a date when the minute books are silent.
Images show what maps cannot. The Aerofilms collection of aerial photographs, taken between 1919 and 1953, is free to browse online and covers a surprising number of town centres. Commercial postcards from around 1900 onwards, press photographs and local photographic society archives often show road surfaces plainly. Pair the earliest photograph that clearly shows setts with the map edition of the same period, and you have a workable bracket.
The most honest answer usually looks like this: laid between about 1875 and 1885, resurfaced at least twice since, and relaid in part after the war. That is a good result. It tells you more about the street than a single confident date ever would, and it gives the next person something solid to check.
Photo: Ylanite Koppens / Pexels
