Large parts of Dallington (Northampton) are missing residential building data despite clearly visible housing on satellite imagery.

Large areas of Dallington, Northampton (UK) are missing residential building data, particularly around Glebeland, Kings Heath, and Gladstone Road.

The road network is well mapped, but many houses are not present in OpenStreetMap despite being clearly visible on satellite imagery and other maps.

Reference location (notes marked on map): OpenStreetMap

The missing buildings are not isolated — this appears to be a broader coverage gap affecting multiple streets and residential areas.

Could someone confirm if there is a reason for this missing data, or help improve building coverage in this area?

Yes - neither you nor anyone else has mapped it yet!

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Thanks, that makes sense. I’m new to OpenStreetMap and not very confident with editing yet. I came across this while using map-based tools and noticed the missing buildings. I was just wondering if someone could map out the buildings since I’m quite unsure on how to do it properly and efficiently myself!

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If you go to osm.org and press edit button you will get short tutorial.

There are some extra complexities, but it should be enough for start. If really unsure you can try mapping some and post here asking for edit review.

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I tried mapping a couple of houses but there’s so many more if anyone would be willing to help with the rest, that would be amazing and greatly appreciated!

You can massively speed up the process by using the Rapid Editor.

When you’re mapping features in the UK, it makes aligning features and property boundaries much easier if you turn on the “OSMUK Cadastral Parcels” overlay in the iD editor (the blue lines in the screen capture below). There’s a bit more information about how they work in the wiki: Property extents in the United Kingdom

I’ve added a couple of buildings and highway features around Cherwell Green and Park Crescent West, which might be useful for tagging suggestions.

If this area is local to you and you have an Android phone, you can use the StreetComplete app to survey and add information like house numbers and building heights as you walk around.

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If you’re suggesting Rapid to use the Microsoft AI slop building tool, it’s not ideal for use in the UK because semidetached houses and terraces should be split, and those types of houses are shown in Robert’s screenshot above.

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Not to mention the licence issue.

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Please do not use Rapid in this way. It creates wrong, but plausible outlines that mappers don’t correct because they don’t get highlighted as potential errors in the same way as unsquared buildings.

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hey MichelleMapsss,

It would be best if you read the entire discussion about Ai imports from few months ago:
https://community.openstreetmap.org/t/poor-quality-imports-of-microsoft-ai-buildings/139610

My stance is still the same (and I know it is frowned at by some of the community); If your intention is to come back and redraw/correct what Ai created then do it (obviously spend some time adjusting them as much as possible during “import”). If you are just adding buildings in an area you don’t know nor care about better leave it be, someone more local might pick it up.

Also on this subject, JOSM can split building in two clicks, so simple shapes can be fixed easily.

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