How Does Houzz's Rating Actually Work?

But the star average isn’t the only thing that determines whether a homeowner sees a pro in the first place. Houzz’s own guidance on how its Pro directory works points to several ranking inputs beyond reviews: the number and quality of photos on a profile, how often the community engages with those photos and answered Q&A, whether the pro displays the Houzz badge on their own website, how complete project entries are (cost and location), and how quickly a pro responds to messages from prospective clients. Reviews are one input among several, not the whole algorithm.

Houzz’s Review Policy also permits something Trustpilot bans outright: an incentivized review, provided the incentive is "clearly and conspicuously stated" in the review itself. Reviewers must have first-hand experience as an actual client (not a prospect), can’t be an employee, officer, principal, or relative of the business or a competing business, and anonymous submissions aren’t allowed — each client gets one review per professional.

• Star rating — a simple average of the 1–5 star scores verified past clients submit; each client can review a given professional once.
• Review moderation — every submission is checked for spam and authenticity before it posts, a process Houzz says can take up to 5–7 business days.
• Directory ranking — a separate set of inputs beyond the star average, including photo count and quality, community engagement, Houzz badge usage, project-info completeness, and responsiveness to messages.
• Policy compliance — reviews that violate eligibility rules (wrong client/project, prohibited content, undisclosed conflicts of interest) are the documented basis for removal, not simply being negative.