The imposing brick and plaster Naseby Post Office was constructed in 1900 and for a very long time was the Maniototo's main post office. It served in that capacity until it was closed in 1988 when the Lands and Survey Department took responsibility and it became a reserve.

That ended 117 years of post and telegraph activity on this site. The post office prior to that was a large and solid wooden structure; unusual in an area where all the other buildings were either mud brick or had light timber frames.

Today the Naseby Post Office building is regarded as a 'high value place'. It is registered as a Category II Historic Place and managed by the Department of Conservation. DOC is currently preparing a conservation plan to ensure that the building survives in its current authentic state.

The building contains much of its original fittings and equipment and is currently leased as a craft shop and information centre. Naseby was a major goldmining hub from the 1860s onwards and has many historic buildings dating back to that time, especially the two surviving hotels. Naseby's other claims to fame include the twin distinction, when it had it's own borough council, of being both the highest altitude and smallest borough in the country.