Why is our count lower than Property Guru or Relab?
Because we count the letters that actually reach an owner — not every record in a database.
Two different jobs
If your goal is broad coverage with a general message, data from portals like Property Guru or Relab works fine for that.
If your goal is reaching the actual owner of each home, that's the job this dataset is built for. Every address in your count is one we believe lands with the owner — so a smaller number here usually means less waste, not less reach.
Cleaned for letter sending
Before a suburb reaches your audience builder, we remove the records that don't suit direct mail:
Rentals and investor-held stock — the person at the letterbox isn't the owner.
Homes already listed for sale — a prospecting letter there wastes your money.
Unclear or disputed ownership — trusts and records we can't confidently resolve to a person.
Mailing addresses that don't reach the owner — care-of agents, lawyers, and stale forwarding addresses.
Verified with NZ Post
What's left is checked the other way too: we verify the mailing address belongs to the owner and is valid in the NZ Post delivery system, so the letter you pay for can actually be delivered.
40–60%
is roughly how many letters reach the property owner when sending on general data sources. Every address in your houseinfo count is one we've verified reaches the owner.
The difference, measured
houseinfo
Letters that reach the homeowner97%
Industry baseline
Letters sent on Property Guru / Relab data57%
Share of letters that reach the property owner. Accuracy levels may vary across suburbs.
Questions about the data? Data work involves a lot of detail, so we keep it on email — it keeps everything clear and avoids confusion around orders and billing. Write to request@houseinfo.co.nz.