Hey Brian,

Welcome and thank you for your contributions to OpenStreetMap. If you need help with contributing, join the community channels here:
https://openstreetmap.community/?map=53.32909,-7.76595&zoom=5.94

Unfortunately, some data you added may need to be removed. However, not all necessarily. Please read on. :-)

Regarding the address data, it is important other contributors can verify what you added is correct. If you can survey (visit) this location and observe the address explicitly signed (posted on a sign, painted or otherwise physically present, where it is clear it belongs to said location) or have existing knowledge (yourself, from the owner or someone else) of this location having said address, this address can be added to OSM. See
https://wiki.openstreetmap.org/wiki/Verifiability

As for the properties' pricing, it is more complicated. OSM tries to respect owners' privacy to some degree which limits what kind of information can be mapped. It is generally disputed to add parcel data (property-related data) to OSM. Note, the high update frequency of such data makes it near impossible to keep it up-to-date and verify it (as explained above).
https://wiki.openstreetmap.org/wiki/Limitations_on_mapping_private_information
(see the "Parcel" page linked there for more information.)

Also, for this data you likely solely used the external source you provided, as the data itself is usually not physically signposted due to its high update frequency. If you intend to use external sources as sole source for your edits, they should have a compatible license. Otherwise, you should have another, compatible source and may only use them for reference (you can't directly use the data for OSM, you have to verify it.)
It looks like we can't use the property price data for OSM. Noteably, information described as "public" does not directly mean it is public, as a description is not a license. The license itself (usually found in the footer or a 'metadata' section as "copyright" or "re-use" disclaimer) includes requirements which the user must meet to be able to re-use the data.
The data from the source you have provided is publicly available for viewing(!) under copyright -the owner retains rights to the data and as such they are able to put some restrictions on its use- and it is allowed to re-use it for certain purposes only. It seems to be licensed for "non-commercial" use only, which is likely a red flag you are not allowed to re-use the data for OSM, as OSM is used commercially. On top, it requires "accurate" re-use, which may or may not also mean they want data to be current (up-to-date) at all times. This is another requirement which, as explained above, is unlikely to be met.
https://wiki.osmfoundation.org/wiki/Licence/Licence_Compatibility#Licences_that_forbid_specific_use
(see this section and the next one)

tldr; I have reverted only the addition of the property price data -not the address data- in
https://www.openstreetmap.org/changeset/138118984

Please use the comment box below to reply to this changeset, so other contributors know you have read this comment.
For any general questions, I recommend using the community channels provided at the top of this comment. Other contributors may not reply (immediately) on posts as this is a voluntary activity.

Thank you for reading in advance.

Regards and happy mapping,

Daniel

Sidenote: I am not a lawyer or otherwise have a professional degree in law or similar subjects. For questions regarding licensing, please refer to the Licensing Working Group (LWG); see
https://wiki.osmfoundation.org/wiki/Contact