{"id":6903,"date":"2016-04-01T00:44:39","date_gmt":"2016-04-01T06:44:39","guid":{"rendered":"http:\/\/spacing.ca\/edmonton\/?p=6903"},"modified":"2025-03-04T14:47:52","modified_gmt":"2025-03-04T21:47:52","slug":"two-new-edmonton-building-age-maps","status":"publish","type":"post","link":"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/","title":{"rendered":"Two New Edmonton Interactive Building Age Maps"},"content":{"rendered":"

In the past 24 hours not one but two interesting online interactive maps have been published\u00a0to\u00a0explore\u00a0the age of the city’s buildings. \u00a0One of them was created by the good people of\u00a0hometribe.ca<\/a>, and the other by myself\u00a0personally with data\u00a0assistance by a good\u00a0friend and GIS master named Rickard Hansen.<\/p>\n

check them both out.<\/p>\n

Home Tribe has done some nice research to coordinate their building layers to boom and bust cycles in the city’s development:
\nView Home Tribe Map by historical era<\/a><\/p>\n

buildings simply separated by decade:
\nView map by decade<\/a><\/p>\n

\"building_age_maps\"<\/a><\/p>\n

Both as I understand are a\u00a0response to a call by Beta City YEG<\/a>\u00a0to replicate a previously\u00a0completed version for\u00a0City of Chicago<\/a>.\u00a0Based on\u00a0data released in the Edmonton open data catalogue<\/a>\u00a0the maps are created by merge of two sets: rooflines<\/a>, and property information data<\/a>.<\/p>\n

The merge of data is not without its issues and inaccuracies. \u00a0The rooflines are a data set of all of the ‘shape’ polygons that define the outlines of buildings such as houses, garages, and commercial buildings on a map, but contain no additional information such as zoning, building age, etc.<\/p>\n

The property data contains information such as\u00a0age built, zoning, house number, street name, address, etc., but nothing about geometry of\u00a0buildings. \u00a0Latitude and\u00a0longitude are included and allow one only to plot points.<\/p>\n

In order to get the building shapes to\u00a0inherit the\u00a0property data, a\u00a0spatial merge using GIS software had to occur, and will not be without inaccuracies. As you can see following, the point data and building data do not always overlap, and the software is instructed to do a ‘close analysis’ and decide to merge.<\/p>\n

\"MERGE\"Nevertheless, the data presented is a big picture\u00a0representation of overall development history of the city.<\/p>\n

Edit: there have been a number of queries and comments such as “the data is incorrect as I used to live in a 100 year old house and it shows as having been built in 1980”. There are the inaccuracies as listed above. Additionally, the accuracy is only as good as the base data itself. See the link to the open data<\/a>. The age data is based on the column ‘Actual Year Built’ which says ‘original year of primary building’. \u00a0As can be seen visually in areas of infill like Westmount or Inglewood redevelopment\u00a0changes the age of the building. \u00a0It is unclear what level of renovation might also affect age built. It is also noted that there are only two buildings in the entire 370,000 rows that are older than 1900 which is in reality unlikely.<\/p>\n

\n

Jason Pfeifer is an Edmonton based Landscape Architect and Urban Designer, and Principal of PD+A Studio<\/a>, a boutique service-oriented interdisciplinary design firm.<\/p>\n","protected":false},"excerpt":{"rendered":"

In the past 24 hours not one but two interesting online interactive maps have been published\u00a0to\u00a0explore\u00a0the age of the city’s buildings. \u00a0One of them was created by the good people of\u00a0hometribe.ca, and the other by myself\u00a0personally with data\u00a0assistance by a good\u00a0friend and GIS master named Rickard Hansen. check them both out. Home Tribe has doneContinue reading “Two New Edmonton Interactive Building Age Maps”<\/span><\/a><\/p>\n","protected":false},"author":6031,"featured_media":6910,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","footnotes":""},"categories":[8,15,18],"tags":[],"class_list":["post-6903","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curiosities","category-history","category-maps"],"acf":[],"yoast_head":"\nTwo New Edmonton Interactive Building Age Maps - Spacing Edmonton<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jason Pfeifer\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/\",\"url\":\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/\",\"name\":\"Two New Edmonton Interactive Building Age Maps - Spacing Edmonton\",\"isPartOf\":{\"@id\":\"https:\/\/spacing.ca\/edmonton\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/spacing.ca\/edmonton\/wp-content\/uploads\/sites\/9\/2016\/03\/building_age_maps.png\",\"datePublished\":\"2016-04-01T06:44:39+00:00\",\"dateModified\":\"2025-03-04T21:47:52+00:00\",\"author\":{\"@id\":\"https:\/\/spacing.ca\/edmonton\/#\/schema\/person\/e71b029daaddb8ba3d271cc6ce6a6d5e\"},\"breadcrumb\":{\"@id\":\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/#primaryimage\",\"url\":\"https:\/\/spacing.ca\/edmonton\/wp-content\/uploads\/sites\/9\/2016\/03\/building_age_maps.png\",\"contentUrl\":\"https:\/\/spacing.ca\/edmonton\/wp-content\/uploads\/sites\/9\/2016\/03\/building_age_maps.png\",\"width\":1772,\"height\":531},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/spacing.ca\/edmonton\/2016\/04\/01\/two-new-edmonton-building-age-maps\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/spacing.ca\/edmonton\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Two New Edmonton Interactive Building Age Maps\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/spacing.ca\/edmonton\/#website\",\"url\":\"https:\/\/spacing.ca\/edmonton\/\",\"name\":\"Spacing Edmonton\",\"description\":\"Canadian Urbanism Uncovered | Edmonton Architecture, Urban Design, Public Transit, City Hall, Parks, Walking, Bikes, Streetscape, History, Waterfront, Maps, Public Spaces\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/spacing.ca\/edmonton\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/spacing.ca\/edmonton\/#\/schema\/person\/e71b029daaddb8ba3d271cc6ce6a6d5e\",\"name\":\"Jason Pfeifer\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/spacing.ca\/edmonton\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/657244ac6b6620bc7400f249691736c7?s=96&d=blank&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/657244ac6b6620bc7400f249691736c7?s=96&d=blank&r=g\",\"caption\":\"Jason Pfeifer\"},\"description\":\"Jason Pfeifer is an interdisciplinary designer and photographer with a background in architectural and communication design. 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