Now accepting early access

Run the whole job on one system, from estimate to closeout.

BYLD is the construction operating system for builders running $2M to $10M residential and light commercial projects. One place for the schedule, the budget, the plans, the change orders, and the owner. Not six.

Request early access Download iBYLD on the App Store Takes about a minute. No card, no demo gate.
What it is

A single system of record for a construction job

BYLD combines scheduling, estimating, budgets, documents and plan markup, change orders, punch lists, and owner communication into one platform that runs on the web and on iPhone, with the iOS app free on the App Store. A project starts as an estimate and stays the same record through closeout, so the budget you track is the estimate you built, and the change order you price moves both the money and the schedule.

Underneath it is a shared cost spine: a 253-code cost taxonomy that every estimate line, budget line, invoice, and draw maps to. That is what makes the numbers add up across the job instead of only inside one screen.

Builders and their teams work in the Builder Portal. Homeowners get a separate, simplified Owner Portal for progress and budget, so a client never has to learn your system.

Who it is for

Residential builders who carry coordination risk on a small team

  • Custom home builders, remodelers, renovation contractors, and general contractors.
  • Boutique developers and the project managers actually sequencing the trades.
  • Projects roughly in the $2M to $10M range, where a missed sequence or a mispriced change order shows up directly in margin.
  • Subcontractors, architects, and designers, who collaborate inside a builder's project through role-based permissions rather than a separate license.

Who it is not for. Heavy civil, infrastructure, and large commercial general contractors. Those teams need enterprise platforms priced on annual construction volume, and BYLD is not one. Saying so up front saves everybody a call.

What changes

The job stops living in six places

Today

  • A schedule spreadsheet, an estimate workbook, a drive full of plans, a group text with the trades, an email chain with the owner.
  • Budget truth is whatever was last reconciled by hand.
  • A change order is priced in one place and remembered in another.
  • The owner calls because they cannot see anything.
  • The next estimate is built off instinct and the last one.

On BYLD

  • One record per job, from pre-construction estimate to final punch item.
  • Committed and actual costs land against the budget as they happen.
  • A change order carries cost impact, schedule impact, attachments, and an approval trail the owner signs.
  • The owner sees progress and budget in their own portal, generated from project data rather than retyped.
  • A jobsite photo becomes a punch item, an estimate line, or a change order from your phone.

Every finished job also makes the next estimate better, because the actuals feed the same engine that produced the estimate.

Why believe it

The estimating engine is measured, not asserted

3.5%
Total cost error on a blind test against a completed $12.75M home the model had never priced.
6.2%
Mean out-of-sample error in leave-one-out validation, refitting with each job held out and predicting it blind.
P20 to P80
Every estimate carries a calibrated prediction interval, so contingency is justified by measured uncertainty rather than a flat percentage.

Those numbers are enforced as automated regression gates on every code change, so accuracy cannot quietly degrade between releases. The ledger behind project money is append-only, with corrections recorded as reversals rather than edits, which means the financial history of a job cannot be rewritten after the fact.

BYLD is made by BYLD Inc., a Delaware C-Corporation based in Nashville, Tennessee, and it is in early access. We would rather tell you what is running today than what is on a roadmap. The AI assistance is exactly that, assistive, and its output should be checked by a qualified professional before it prices work.

Accuracy figures are from BYLD's internal validation harness on same-tier residential projects. Your results depend on your cost history and how the job is scoped.

Request early access

Tell us about the work you run. We onboard builders in order and reply to every request.

  1. We read it and reply by email, usually within two business days.
  2. A short call to see your projects and confirm BYLD fits the work.
  3. Onboarding in order, with your first project set up alongside you.
Download iBYLD on the App Store

Free on iPhone. The listing reads iBYLD by BYLD Inc. Sign in once your account is active.