Roofing Contractor Lead Capture Site with Instant Estimate Calculator

Problem and target customer

Why this exists

Customer problem

Homeowners often submit vague contact forms that give a roofer too little information to prioritize the call. Contractors then spend time collecting address, urgency, roof type, affected area, and photos before they can even discuss a rough range.

Who pays

Owner-operated and small residential roofing contractors that buy or generate web traffic and personally review incoming repair and replacement leads.

Business model

One-time setup plus a monthly hosting and lead-workspace subscription for each contractor site.

Editorial note

The calculator should qualify a conversation, not impersonate an inspection. A low-high range becomes trustworthy when the visitor can see which roof facts and contractor-owned rate bands shaped it, along with a clear statement of what remains unknown.

Photo upload is part of lead quality, so it needs the same recovery care as the form. Completed answers should survive a failed image, accepted files should be visible before submission, and the contractor should know whether the record is complete.

The commercial test is better callbacks. Measure whether the contractor reaches informed prospects faster and repeats fewer intake questions; do not judge the MVP by traffic or estimate counts alone.

Choose your next step

What do you need next?

Evaluate the operating tradeoffs quickly, or inspect how to build the MVP.

Evaluate this ideaSee the cost and deployment preview

Compare the three operating paths at the default workload before opening the full calculator.

See cost preview Build this ideaInspect the build blueprint

Review MVP scope, workflow, states, data rules, architecture, and acceptance criteria.

Open blueprint

Evaluation preview

What would it take to run?

Directional infrastructure estimates for the current 500 roof estimate submissions assumption. Open the full calculator when you are ready to change it.

Open full cost and deployment

ManagedSelected

$20-$80/ month

Managed application, PostgreSQL, backups, and observability for assessment drafts, rate calculations, and lead reviews.

Lowest operating effort

Lean self-hosted

$7-$45/ month

One small cloud server runs the app, database, and backup job for assessment drafts, rate calculations, and lead reviews.

Lowest baseline cost

More control

$45-$160/ month

Separate web, data, worker, and monitoring capacity for assessment drafts, rate calculations, and lead reviews.

Most separation and control

Build blueprint

Build the first paid use case

Product goal

Who it serves and what it must change

Target user: A homeowner with a suspected roof repair or replacement need, and the local contractor who must decide whom to call first.
Problem: Generic quote forms capture contact information without the damage, roof, urgency, or photo context needed for a useful first conversation.
Measurable outcome: A visitor completes the assessment on mobile, sees a labeled ballpark range, and creates a lead that the contractor can prioritize without requesting the same facts again.

MVP scope

What ships now and what waits

Included

Publish editable service, trust, process, and service-area content for one roofing contractor.
Guide visitors through address, roof type, approximate area, damage symptoms, urgency, access, and contact consent.
Upload a limited set of roof or damage photos using signed URLs and progress feedback.
Calculate a nonbinding low-high range from contractor-owned rate bands, selected work type, area band, pitch, and modifiers.
Save the estimate inputs, result, photos, and qualification flags in a contractor lead queue.

Excluded

Satellite roof measurement, insurance claim filing, financing approval, and contract signing.
AI photo diagnosis, exact quotes, storm scraping, and automated appointment booking.
Multi-contractor lead resale or marketplace routing.

UX and user flow

Screens, actions, and states

Service Landing

Explain supported roofing work, service area, estimate limitations, and the assessment call to action.

Review servicesCheck service areaStart estimate

Roof Assessment

Collect roof facts, symptoms, urgency, contact consent, and photos in a resumable mobile flow.

Answer damage questionsSelect area bandUpload photosEnter contact details

Ballpark Result

Show the configured low-high range, assumptions, disclaimer, and expected callback.

Review assumptionsSubmit leadRequest callback

Lead Queue

Help the contractor sort submissions by urgency, work type, completeness, and service-area fit.

Open submissionChange qualificationAssign callbackMark contacted

Estimate Settings

Maintain service ZIP codes, rate bands, modifiers, disclaimers, and notification recipients.

Edit rate bandSet modifierPublish settingsTest calculation

Primary flow

The contractor publishes service-area rules and estimate rate bands.
A homeowner checks eligibility and completes the guided assessment.
Photos upload before the estimate is calculated from the active settings version.
The visitor reviews assumptions and consents to submit the lead.
The contractor opens the qualified record, reviews photos, and records the callback outcome.

Loading, empty, and error states

assessment_started
photo_uploading
estimate_ready
submitted
out_of_area
needs_review
qualified
contacted
closed
upload_failed

Core entity outline

Entities and business rules

ContractorProfile

Stores public business details, service areas, notification recipients, and active estimate settings.

Fields: id, business_name, service_zip_codes, phone, notification_emails, active_rate_card_id
Relations: has many submissions, has many rate cards

RateCard

Versions work-type ranges and modifiers used to calculate a nonbinding estimate.

Fields: id, contractor_id, version, status, effective_at, disclaimer
Relations: belongs to one contractor, has many rate rules, used by submissions

RateRule

Defines the base range or modifier for work type, area band, material, pitch, urgency, or access.

Fields: id, rate_card_id, dimension, match_value, min_amount, max_amount, modifier_type
Relations: belongs to one rate card

EstimateSubmission

Keeps assessment answers, contact consent, estimate range, service fit, and lead status.

Fields: id, contractor_id, rate_card_version, address, work_type, area_band, urgency, estimate_min, estimate_max, status, consent_at
Relations: belongs to one contractor, uses one rate card version, has many photos, has many lead events

AssessmentPhoto

References a private uploaded image and its scan or upload state.

Fields: id, submission_id, object_key, mime_type, size_bytes, status
Relations: belongs to one estimate submission

LeadEvent

Records qualification, contact attempts, notes, and closure without rewriting the original estimate.

Fields: id, submission_id, kind, actor_id, note, occurred_at
Relations: belongs to one estimate submission

Business rules

The calculator uses only the active contractor rate-card version and stores that version with every result.
The public result is always a range labeled as a preliminary estimate, never a quote or insurance assessment.
Out-of-area visitors may request a callback only if the contractor enables manual review; they are never shown an in-area claim.
Photo count, type, and size are capped, and estimate submission is possible when uploads fail only if the contractor permits photo-optional work types.
Changing rate settings affects new calculations only and does not rewrite submitted estimates.

Architecture and data flow

Components, integrations, and controls

Public roofing site

Serves local service content and the mobile assessment without exposing contractor administration.

Estimate service

Loads the active rate card and produces an explainable low-high range from validated answers.

Contractor console

Manages settings and turns submissions into a prioritized callback queue.

Relational database

Stores rate-card versions, assessment facts, consent, estimate results, and lead events.

Private object storage

Accepts signed photo uploads and serves them only to authorized contractor users.

Integrations

S3-compatible storage for damage photos.
Transactional email for visitor confirmation and contractor notification after a lead is persisted.
Make as optional delivery into an existing CRM; it does not calculate or own the estimate.
No LLM, mapping, payment, or calendar service is required for the first release.

Data flow

The browser validates service area and saves a short-lived assessment draft.
Photos upload directly to private storage using constrained signed URLs, then the server attaches completed objects to the draft.
The estimate service loads one published rate-card version and returns the range with matched assumptions.
Consent and contact details convert the draft into a submitted lead in one transaction.
Notifications are queued after commit, while the contractor console reads the saved record regardless of email status.

Failure handling

If a photo upload fails, retain completed answers and offer retry or a permitted photo-optional submission path.
If notification delivery fails, keep the lead visible and surface notification status for manual follow-up.
If rate settings change during an assessment, calculate against the version loaded at final review and show the resulting assumptions.

Security

Separate public assessment tokens from contractor sessions and expire abandoned drafts.
Validate image signatures, size, count, and content type; use signed read URLs for contractor access.
Encrypt contact details, record consent, apply bot protection, and never expose rate administration publicly.

Rate limits

Rate-limit assessment starts by IP and device token and apply bot checks before contact submission.
Cap photo uploads per draft and signed URL lifetime.
Throttle notification retries and contractor setting publication.

Deliverables and acceptance

Definition of done for the MVP

Deliverables

Responsive public roofing pages, guided assessment, estimate result, lead queue, and rate settings.
Versioned deterministic calculator with fixtures for repair, replacement, out-of-area, and modifier cases.
Signed image upload and authorized review flow with file validation.
Queued confirmation and contractor notifications plus delivery-status visibility.

Acceptance criteria

A mobile visitor can complete a supported assessment, upload photos, and receive the same range for the same published rate-card version.
Every displayed estimate names its assumptions and nonbinding status and is stored with the exact settings version.
An oversized or unsupported photo is rejected without clearing the rest of the assessment.
A failed contractor email does not lose or hide the submitted lead, and the console offers a resend action.
Changing a rate rule changes new results but leaves previously submitted ranges unchanged.

Recommended stack

Enough technology for the first version

Web

Astro SSR with interactive form islands

Combines fast local-service pages with a resumable assessment and protected contractor console.

Data

PostgreSQL

Keeps rate versions, submissions, consent, and callback history consistent.

Storage

Cloudflare R2 or S3

Supports constrained direct uploads and signed contractor access to damage photos.

Resend

Sends confirmation and contractor alerts after the lead transaction commits.

Protection

Turnstile plus server rate limits

Reduces automated submissions before storing contact details and photos.

Why this is sufficient

A deterministic calculator is safer and easier for the contractor to tune than AI image analysis. Versioned rules and resilient photo intake create the useful pre-call context without pretending to replace inspection.

Not required for the MVP

LLM APIMaps API for initial ZIP matchingPayment processorCalendar APIBackground computer visionNative mobile appSeparate search service

Next stepTurn the blueprint into an execution plan

Copy the build prompt, model the operating cost, and choose where to deploy.

Build and ship

Execution

Build, price, and deploy the MVP

Once the blueprint is clear, use the prompt, cost model, and deployment options to start building.

Build prompt

Copy this into a builder

Use Lovable for the conversion flow and contractor console, then implement the rule-based calculator, signed uploads, and lead persistence in a Railway-hosted application.

Build prompt

Your build prompt is ready

Open the prompt pack whenever you are ready to take this blueprint into your builder.

Based on the blueprintReady for your builderFollow-up steps included

Cost calculator

Model the MVP operating cost

A technical run-cost estimate for the first production version. Team, acquisition, payment fees, and business COGS are excluded.

Estimated monthly total$20-$80

$10-$40 per 250 roof estimate submissions

Roof estimate submissions / month500 roof estimate submissions

Selected pathEasiest

Pricing checkedAug 2, 2026

Cost breakdown

$20-$80 per month

Low and high values allow for usage variance and plan headroom.

Managed infrastructure

Managed application, PostgreSQL, backups, and observability for assessment drafts, rate calculations, and lead reviews.

10K roof estimate submissions included, then $6-$18 per 10K roof estimate submissions

$20-$60

Damage photo storage

Stores validated assessment photos privately and serves them to authenticated contractor users.

Monthly allowance from this idea's operating profile

$0-$20

Estimate notifications

Sends one visitor confirmation and contractor alert after a lead is safely stored.

3K roof estimate submissions included

Included

Public site and contractor console hosting
Relational database
Private photo storage
Confirmation and contractor notification email
Backups and basic monitoring

Not included

Paid advertising
CRM subscription after optional handoff
Onsite estimating labor
Satellite measurement
Insurance integrations
Payment fees
Legal review of estimate wording

Pricing basis

The estimate combines the selected infrastructure path, required operating modules, selected optional modules, and usage above included monthly allowances. Taxes and regional uplifts are excluded.

Railway pricing Cloudflare R2 pricing Resend pricing

Deployment options

Pick the operational tradeoff

Choose based on operating preference, not only the headline price.

EasiestRecommended

Railway

Deploy public estimate requests, private photos, and contractor lead review with a managed database and background jobs in one project.

$20-80/month before workflow-specific services

Good fit

Managed database
Preview environments
Simple job deployment

Limitation

Usage billing needs active budget alerts.

Open Railway

Cheapest

Vultr

Run the app, worker, and database on one small Vultr VPS with Docker Compose and explicit backups.

$7-35/month before workflow-specific services

Good fit

Low baseline
Portable deployment
Direct backup control

Limitation

Patching, monitoring, backups, and recovery remain operator tasks.

Deploy on Vultr View the lean VPS guide

More control

DigitalOcean

Separate application, worker, data, storage, and backup responsibilities as the workload grows.

$45-180/month before workflow-specific services

Good fit

Granular permissions
Service isolation
Scaling headroom

Limitation

The larger service surface requires more operational work.

Explore DigitalOcean View the separated cloud guide

Start building

Prototype, automate, then deploy

Recommended route

01Vibe-coding builderPrototype the primary workflow

Build the public service pages, guided roof assessment, photo upload, estimate result, contractor rate settings, and qualified lead queue.

Open Lovable 02AutomationConnect bounded handoffs

Use Make only to notify the contractor or copy an accepted lead into an existing CRM after the estimate record has been saved.

Open Make 03DeployDeploy the operating service

Deploy the public site, protected contractor console, database, signed photo storage, and notification endpoint together.

Open Railway

Roofing Contractor Lead Capture Site with Instant Estimate Calculator

Is this worth validating?

Build this if

Avoid this if

Validate first

Why this exists

Customer problem

Who pays

Business model

What do you need next?

What would it take to run?

Build the first paid use case

Who it serves and what it must change

What ships now and what waits

Included

Excluded

Screens, actions, and states

Primary flow

Loading, empty, and error states

Entities and business rules

Business rules

Components, integrations, and controls

Integrations

Data flow

Failure handling

Security

Rate limits

Definition of done for the MVP

Deliverables

Acceptance criteria

Enough technology for the first version

Astro SSR with interactive form islands

PostgreSQL

Cloudflare R2 or S3

Resend

Turnstile plus server rate limits

Why this is sufficient

Not required for the MVP

Build, price, and deploy the MVP

Copy this into a builder

Your build prompt is ready

Model the MVP operating cost

Usage assumptions

$20-$80 per month

Included

Not included

Pricing basis

Pick the operational tradeoff

Railway

Good fit

Limitation

Vultr

Good fit

Limitation

DigitalOcean

Good fit

Limitation

Prototype, automate, then deploy

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