Updated
Contact
One email address, read by a person.
There is no contact form, deliberately. A form would mean collecting and storing your details, and we would rather not hold anything about you at all.
What to send where
- A figure looks wrong — please use report incorrect data, which pre-fills the details that help most.
- Advertising enquiries — email us. Note that advertising has no influence on any number this site produces, and we do not sell placement inside calculator results.
- Press and research — happy to explain the methodology or point you at the underlying federal datasets.
- Suggesting a calculator — genuinely useful. Tell us what you were trying to work out and what you could not find anywhere else.
What we cannot help with
We cannot quote your job, recommend a contractor, review a bid you have received, or give advice on structural, electrical, plumbing, or mechanical work. Those need a licensed professional who has seen the property. What we can do is explain exactly how a figure on this site was arrived at.