Locally we have had a pub and terrace building demolished to give way to flats. Do I just delete the existing buildings, or what is the best practice?

asked 24 Apr '13, 23:21

ThomasMarkas's gravatar image

ThomasMarkas
31114
accept rate: 0%

edited 25 Apr '13, 01:56

aseerel4c26's gravatar image

aseerel4c26 ♦
28.3k14211486

Thanks very much for this. As the site is now effectively a clear area for some time I have:-

  1. Using the bing background I have marked the construction site.
  2. I have left the pub and marked it as demolished-yes.

The pub had a long history, so I'd like to see the tag stay as people will refer to it locally for a long time.

http://www.openstreetmap.org/edit?lat=51.65875&lon=-0.085927&zoom=18

This looks like the right thing to do.

(25 Apr '13, 12:07) ThomasMarkas
1

As I already explained in a comment below Andy's answer you should use the disused tag. In your case, change "amenity=pub" to "disused:amenity=pub" because it is obviously not a pub anymore.

(25 Apr '13, 13:01) scai ♦

Have made the change as requested. The disused: prefix to a tag seems to me important for my mapping going forward.

(30 Apr '13, 10:37) ThomasMarkas
4

In this case the disused prefix is actually wrong. Disused means the building is still there but no longer used as such. In stead you could do the same with the word "demolished" or simply use a note tag.

(30 Apr '13, 11:09) cartinus
1

You are absolutely right cartinus. The disused tag is only for features that still exist but are currently not in use. If the feature doesn't exist anymore then another prefix or a note should be used.

(30 Apr '13, 13:43) scai ♦

I would use the landuse=construction like this one http://www.openstreetmap.org/?lat=52.350307&lon=-0.176417&zoom=18&layers=M I used the old pub name then and intend to use a new name if the builders sign it. That way anyone doing a search for it should have a chance of success.

permanent link

answered 25 Apr '13, 00:40

andy%20mackey's gravatar image

andy mackey
10.9k69118244
accept rate: 5%

edited 25 Apr '13, 00:45

1

If the building is still visible on Bing you can change the building tag to "disused:building=yes" so that other people don't add it again. See the wiki page about the disused key for further information.

(25 Apr '13, 09:06) scai ♦
1

@scai: No, "disused" is wrong - it's for objects that still exist (but are not currently in use). The right tag would be "removed" or "demolished" - though arguably the buildings should just be removed.

(13 Nov, 09:25) sleske

I'd leave the polygon(s) in place until either new construction is in the area or the satellite imagery is updated to show the area without the buildings. That will keep arm chair mappers from elsewhere from erroneously adding them back in.

However they are no longer buildings, so use the lifecycle prefix, see https://wiki.openstreetmap.org/wiki/Comparison_of_life_cycle_concepts#Lifecycle_prefix_.28.3Cstatus.3E:.3Ckey.3E_.3D_.3Cvalue.3E.29 to change the building= tag to demolished:building= This will remove the buildings from maps that render building=*

It probably is a good idea to add the note tag as suggested by Mateusz Konieczny as well.

permanent link

answered 11 Nov, 16:31

stf's gravatar image

stf
6.2k954100
accept rate: 19%

Yes, it's absolutely ok to delete a demolished building. In fact, that's the default way of dealing with things that no longer exist.

If you're worried about people re-mapping the building from outdated imagery, leaving a hint to your fellow mappers can make sense, though. Mapping the construction site often gets the message across, but for additional emphasis, you could leave the original building outline in place with only a note tag.

Some mappers prefer leaving the old tagging in place, but adding a lifecycle prefix such as demolished:building=*. Unlike notes, these tags are not just for consideration by fellow mappers, but intended to be usable by data consumers. However, historical information about features that no longer exist is generally considered out of scope in OSM (albeit not unanimously), so I would not recommend that approach.

permanent link

answered 13 Nov, 18:04

Tordanik's gravatar image

Tordanik
8.9k1183107
accept rate: 33%

To avoid other users recreating it based on memory and/or aerial images I would

  • remove building tag from demolished buildings
  • add note "building demolished according to survey (<date>), delete once aerial images are updated"
  • create new objects (landuse=construction etc) and tag it additionally with note tag "objects created according to survey made after update of aerial images, update geometry after update of aerial images"

It is better than adding demolished=yes that harms data consumers (it is like tagging prison as amenity=hotel + involuntary=yes).

It is better than just deleting as it helps mappers relying on aerial images and memory.

permanent link

answered 11 Nov, 15:38

Mateusz%20Konieczny's gravatar image

Mateusz Koni...
2562414
accept rate: 0%

1

If a recent edit looks wrong against aerial, but the source is survey or recent visit then either believe the last edit or survey it yourself but not from an armchair. Most aerial is several years old. I have received several and sent one or two messages to mappers when mapping was or seemed to be incorrect so contacting them is a sensible option if in doubt.

(11 Nov, 16:50) andy mackey

Some people prefix the building key with "demolished:" or "razed:". They are known as lifecycle prefix. https://wiki.openstreetmap.org/wiki/Lifecycle_prefix

Old version: building=residential, new version: demolished:building=residential.

(12 Nov, 00:10) Nakaner
Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:

×168
×3

question asked: 24 Apr '13, 23:21

question was seen: 3,549 times

last updated: 13 Nov, 18:04

powered by OSQA