Building expertise, from the people who built it

Architects, engineers, builders and developers — vetted by people, checked for conflicts, and answering from experience. On any building matter: an hour on the phone, a written second opinion, or a longer project.

Now open for projects in the United States, the United Kingdom and Europe.

For clients

Ask an expert

Tell us the question. A person finds the right expert, checks for conflicts and sets it up.

  • A call, a written review, a site visit or a longer project
  • An NDA before any details are shared, if you need one
  • Nothing booked or charged until you agree
Post a request →
For experts

Join as a consultant

Get paid for what you know about buildings. Set your own rate and see every request before you say yes.

  • Seven short sections, saved as you go — stop and come back anytime
  • Licenses and history checked by a person
  • Take only the work that fits
Apply → Sign in

How it works for clients

  1. Post your question. What you need to know or decide, and by when.
  2. We match it. A person picks experts with first-hand experience of it, and checks they have no conflict.
  3. Talk to them. A call, a review or a visit — on terms you have agreed.

How it works for experts

  1. Apply. Your expertise, credentials, the buildings you worked on, and a short conduct check.
  2. Get asked. Requests that match what you know come to you first, with no client named.
  3. Say yes or no. You decide, at your rate.
Vetted by peopleEvery application is read, and licenses are checked against the public registers.
Proven on real buildingsExperts show the buildings they worked on, checked against our database of built work.
Checked for conflictsNobody is put forward on a matter they are tied to.
Human, not generatedAnswers come from experience. Experts agree not to pass off AI output as their own.

Expertise

Architecture Structural engineering Façade & building envelope MEP & building services Fire engineering & life safety Geotechnical engineering Vertical transportation Acoustics Sustainability & certification Building codes & permitting Cost & quantity surveying Procurement & contracts Construction management & scheduling Claims, disputes & expert witness Forensic engineering & failure investigation Building physics & energy modelling Civil, infrastructure & site works Waterproofing & roofing Development & feasibility Real estate investment & valuation Due diligence & building condition Property & facilities management BIM & digital construction Heritage & restoration Interiors & fit-out Landscape & urban design Building materials & products Health & safety