Mayra Arntz

Mayra Arntz

Principal atBuilding VenturesSan Francisco

Mayra Arntz is a principal at Building Ventures focusing on early-stage construction tech startups. She previously held roles at Stanley X and HoloBuilder, and is based in San Francisco.

What Mayra can write

Writes checks ofNot reported
Comes in atSeed, Series ACan lead the round
Best routeA warm introAsk a founder in their portfolio.

Career

  1. HoloBuilder · head of product
  2. Stanley X · strategy lead
  3. Building Ventures · principal
    Now

Investments named in public bios

BuildFactory

Focus

construction techearly-stage startupsproject lifecyclelean constructionbim toolsearly-stage

Education

Pontifical Catholic University of Peru, B.S in Civil EngineeringHult Business School, Master in Business Administration

Also at Building Ventures

Partners like Mayra

At firms with a similar stage, sector and check size.

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One email when Mayra's firm raises a fund, adds a partner or shows new activity.

Founders and investors at a Mode VC gathering

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Questions

Who is Mayra Arntz?

Mayra Arntz is a principal at Building Ventures focusing on early-stage construction tech startups. She previously held roles at Stanley X and HoloBuilder, and is based in San Francisco.

How much does Mayra Arntz invest?

Building Ventures has not reported a check size. It invests at seed, series a.

How do I pitch Mayra Arntz?

A warm intro from a founder Building Ventures backed works best.

What did Mayra Arntz do before Building Ventures?

head of product at HoloBuilder; strategy lead at Stanley X.

Last updated 2026-10-15. Is this you? Ask for a correction.