This page is to describe and discuss the non coincident parcel address problem.
Definition
This happens when an address is linked to a parcel that is not spatially coincident.
A picture is worth a thousand words.
This is "1011 Silliman St" which is linked to 5935-027 and 5935-028.
To see this live go to http://eas.sfgov.org.
EAS originally did not support this but we changed EAS when we found these data in AVS.
Acella does not support this sort of address.
In Acella, parcels for an address must be spatially coincident with the address point.
Scope
There are 3253 unretired parcel level addresses currently being used at DBI.
We can find these easily with a query like this.
SELECT ab.base_address_num, ab.base_address_suffix, a.unit_num, sn.base_street_name, sn.street_type, p.blk_lot FROM address_base ab inner join addresses a on (ab.address_base_id = a.address_base_id) inner join streetnames sn on (ab.street_segment_id = sn.street_segment_id) inner join street_segments ss on (ab.street_segment_id = ss.street_segment_id) left outer join address_x_parcels axp on (axp.address_id = a.address_id) left outer join parcels p on (axp.parcel_id = p.parcel_id) WHERE 1 = 1 and sn.category = 'MAP' and ab.retire_tms is null and a.retire_tms is null and axp.retire_tms is null and not st_intersects(ab.geometry, p.geometry) order by ss.st_name, ss.st_type, ab.base_address_num, ab.base_address_suffix, a.unit_num;
Variation
Some of these are surely errors; in other cases it is not so clear.
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