75% off first purchase + included premium onboarding.
Estimate Custom Homes, Options, and Client Changes With Confidence

Custom Home Builder Estimating Software

Build consistent custom home estimates from a shared library, present options clearly, and keep proposals, approved changes, invoices, and client communication connected. Erro gives builders a practical workflow from first inquiry through the signed scope.

No credit card required. Create your account immediately.

Solving Real Problems for Your Team

Our platform is designed to address the unique challenges faced by owners, managers, estimators, sales teams, and clients—empowering everyone to achieve better outcomes, together.
A custom-home estimate has too many details to rebuild from a blank spreadsheet

Start with the recurring scopes your team already understands: site work, foundation, framing, mechanicals, finishes, and project-specific allowances. Reusable library items and assemblies make the estimate easier to review without hiding the assumptions that make each home unique.

  • Group costs by phase, trade, or room

  • Reuse labor, material, and service line items

  • Keep allowances and exclusions visible

  • Review a complete scope before a price is sent

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    Base specifications, upgrades, and client selections blur the original price

    Separate included specifications from optional upgrades and allowances before presenting the proposal. A clear option structure lets the client see what is included, what can change, and how a selection affects the total.

  • Create repeatable room and finish packages

  • Present base scope and optional selections separately

  • Document allowance assumptions

  • Keep revisions attached to the current estimate

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    Long sales cycles make follow-up and proposal status hard to manage

    Keep prospective homeowners, project notes, estimates, and next steps in a connected sales workflow. Use a defined process for discovery, budget alignment, proposal delivery, and follow-up so opportunities are not left in inboxes or disconnected files.

  • Capture and organize new inquiries

  • Assign clear follow-up ownership

  • Connect lead context to the estimate

  • Know which proposal needs the next action

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    Client changes create scope risk after the original proposal is approved

    When a selection, condition, or requested upgrade changes the work, record the impact before proceeding. Create a change order from the original estimate, state the added scope and price, and keep the approval with the project record.

  • Price changes from the approved estimate

  • Show labor, materials, and scope impact

  • Send client-ready change documentation

  • Maintain a record of approved revisions

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    Deposits and progress billing need to match a clear client commitment

    Use the approved proposal and defined payment milestones as the starting point for invoices. Clear billing descriptions and timely reminders help homeowners understand what is due and why.

  • Set deposits and milestone payments

  • Create invoices from the agreed workflow

  • Offer online payment options through Stripe

  • Keep billing follow-up organized

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    Construction software solutions by business type

    Explore workflows for the way your team estimates, sells, and manages client changes.

    Construction Estimating Software

    Estimate, propose, manage changes, and invoice from one workspace.

    Commercial Construction Estimating

    For detailed bids, revisions, and commercial proposal workflows.

    Construction Cost Database Software

    For teams that need shared pricing, assemblies, and estimate consistency.

    Construction Marketing Automation

    For lead capture, estimate follow-up, and connected client communication.

    Construction Payment Reminders

    For invoices, payment plans, online payments, and follow-up.

    Construction Profitability Workflows

    For estimates, scope changes, billing, and more informed pricing decisions.

    Trades & Construction

    For specialty contractors and trade businesses.

    Custom Remodelers

    For repeatable scope, material, and change-order pricing.

    Custom Home Builders

    For detailed estimates, selections, and client approvals.

    Modular Home Builders

    For model pricing, option packages, site work, and client changes.

    Design & Build Firms

    For design-build teams that need a connected sales workflow.

    Fabricators & Manufacturers

    For organized estimates, orders, and client change management.

    Agencies & Consultants

    For client-facing teams managing proposals and sales activity.

    Modernizing Sales Teams

    For teams replacing manual sales processes and spreadsheets.

    Ready to estimate and sell more efficiently?

    Start your 30-day free trial, create an account immediately, and build accurate estimates and proposals from desktop or mobile.

    No credit card required. Create your account immediately.

    Everything your team needs to stay in sync.

    From leads to invoices, Erro keeps your team aligned. Built-in CRM and project management tools help you track clients, assign tasks, and stay updated on every job.

    CRM & Contact Forms

    CRM & Contact Forms

    Capture, organize, and manage leads in one place to keep your pipeline moving. Collect leads from web forms, phone calls, and referrals, then track interactions, apply custom tags and statuses, and collaborate with your team to turn more opportunities into conversions.

    CRM & Contact Forms
    Marketing Automation

    Marketing Automation

    Automate outreach to save time and boost conversions. Set up email campaigns, schedule follow-ups, and use custom email templates to maintain a consistent brand presence and streamline communications at scale.

    Marketing Automation
    Product Library

    Product Library

    Centralize all your offerings with up-to-date pricing, tax profiles, and budget tracking. Add items to estimates, proposals, and invoices with accuracy, without relying on spreadsheets or manual calculations.

    Product Library
    Sales Templates

    Sales Templates

    Build reusable templates for all your sales documents, including estimates and proposals. Support complex assemblies, base and option pricing, and item groupings. Save, update, and copy templates to streamline workflows, reduce errors, and accelerate sales cycles.

    Sales Templates
    Estimate Creation

    Estimate Creation

    Create accurate estimates in minutes using templates and live pricing from your product library. Adjust items, quantities, and pricing with confidence, then send proposals directly from your estimates to clients for faster approvals.

    Estimate Creation
    Proposals

    Proposals

    Create, manage, and send professional proposals with ease. Customize templates, track client interactions, and streamline the approval process to close deals faster.

    Proposals
    Invoices & Payments

    Invoices & Payments

    Generate invoices from proposals and record payments seamlessly. Automate billing notifications, track payment status, and manage recurring or scheduled invoices—all from a single dashboard.

    Invoices & Payments
    Change Orders

    Change Orders

    Manage change orders efficiently by linking them directly to estimates and proposals. Track payments and current pricing, update line items easily, and keep your team informed with dashboard visibility and automated approval workflows.

    Change Orders

    Ready to estimate and sell more efficiently?

    Start your 30-day free trial, create an account immediately, and build accurate estimates and proposals from desktop or mobile.

    No credit card required. Create your account immediately.

    Frequently Asked Questions

    • How do I access Erro?

    • How do I get started with Erro?

    • Can I change my subscription plan later?

    • Is Erro suitable for small businesses?

    • How is billing managed?

    • Does Erro offer customer support?

    • Can I import my existing data into Erro?

    • Is Erro Mobile-Friendly?

    • How do I add my lead form to my website?

    • Is my data secure with Erro?