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Lighthouse
Navigate with confidence
PRO
Term of the Day
Notifications
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Mortgage Glossary
More
or
Build Your Home Profile
Upload any of these — Lighthouse Logic reads each one automatically and checks it off below. Loan Estimate supports up to 3 lenders so you can compare offers.
Mortgage Timeline
Track where you are, application to closing
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Key Deadlines
Lender 1
Upload Loan Estimate
PDF or photo
Lender
—
Lender 2
Upload Loan Estimate
PDF or photo
Lender
—
Lender 3 (optional)
Upload Loan Estimate
PDF or photo
Lender
—
Just want a quick affordability estimate? Keep going below.
Prefer to fill in a full Home Profile instead? Create one here →
About you
The home you want
Fill this in only if you're evaluating one actual listing -- it lets Lighthouse start tracking it as a Potential Property in Home Profile.
Loan preferences
Pre-Approval Checklist
Based on your profile
0%
✓ Statement read — fields updated below. Review and run your checkup.
Build Your Home Profile
Upload any of these — Lighthouse Logic reads each one automatically, checks it off below, and unlocks your Mortgage Health Score once enough is known.
Reading your escrow statement...
✓ Escrow analysis read
Just want a quick payment/refi estimate? Keep going below.
Prefer to fill in a full Home Profile instead? Create one here →
Your loan
Loan terms (optional)
Monthly breakdown
Property info
Your situation
My Saved Loans
My Home Profiles
No saved loans yet —
fill in your info and save it here.

Save this loan

Give it a name so you can find it easily later.

Mortgage Glossary
Tap any term for the definition
Ask Lighthouse Logic about this →
Loan Details
Enter your loan info or auto-filled from your loaded profile.
Loan
Fill in purchase price + down payment and this fills in automatically \u2014 or just enter loan amount directly if that\u2019s what you already know.
All-In Monthly Cost — optional
Add these for the real all-in payment and a branded summary card \u2014 leave blank for a P&I-only schedule.
Extra Payment Simulator
ARM Details
Found in your loan note
Check current SOFR at newyorkfed.org
Max change per adjustment period
Max total increase from start rate
Escrow Inputs
Optional — most escrow accounts hold only tax + insurance
RESPA caps this at 2 months
This is a planning estimate, not a substitute for your real escrow analysis — upload that document for your actual shortage/overage status.
Scenario A
Scenario B
How Rates Work
What moves your rate
1
Credit score
A 740+ score gets the best rates. Each tier below can add 0.25–0.5% to your rate.
2
Down payment
20% down eliminates PMI and typically earns a lower rate. Less down = more risk = higher rate.
3
10-Year Treasury
Mortgage rates track the 10-yr Treasury yield. When it rises, mortgage rates follow — usually within days.
4
Loan type
VA and FHA loans often beat conventional rates but come with specific eligibility requirements and fees.
Rate Lock Guide
When and how to lock
A rate lock guarantees your interest rate for a set period — typically 30, 45, or 60 days — while your loan closes.
Lock early if rates are rising or your closing date is firm.
Float if rates are falling and your close date is flexible.
Float-down options let you capture a drop after locking — ask your lender if they offer it.
If the lock expires before closing, you pay to extend or lose the rate.
Fixed vs ARM
Which is right for you?
Fixed Rate
Rate never changes. Predictable payment for the life of the loan. Best if you plan to stay 7+ years or rates are low.
Adjustable Rate (ARM)
Fixed for 5–10 years, then adjusts annually. Lower starting rate — best if you plan to sell or refi before it adjusts.
In a high-rate environment, ARMs offer short-term savings. In a low-rate environment, locking fixed is almost always smarter.
Mortgage Points
Should you buy your rate down?
1 point = 1% of the loan amount paid upfront to lower your rate — usually by 0.25%.
On a $400k loan, 1 point = $4,000 upfront to save ~$60/mo.
Break-even: $4,000 ÷ $60 = ~67 months to recoup the cost.
If you sell or refi before break-even, you lose money on the point.
Ask Lh Logic to calculate your exact break-even based on your loan amount and rate difference.
Before you generate
Have these ready to fill out your letter accurately.
Always needed
Your full legal name as it appears on the loan
Property address
Loan or account number (on your statement)
Servicer name and mailing address
Today's date
For dispute letters
Specific dollar amounts and dates involved
What you believe the correct information should be
Any prior communication with the servicer
How to send
Always send with proof
Certified mail with return receipt — creates a legal record your servicer received it.
Keep a copy of every letter sent and every response received.
Note the date you send — response deadlines start from receipt.
Legal timelines
What your servicer must do by law
QWR / Notice of Error acknowledgment
5 days
QWR / Notice of Error resolution
30 days
Payoff statement delivery
7 days
Loss mitigation application response
30 days
PMI automatic termination at LTV
78%
What is this?
A living record for each property
Each Home Profile is a record for one property, built automatically from every document you upload for it — no separate setup. You can track multiple properties at once, each with its own profile. Empty fields fill in on their own; if a new document disagrees with something already on file, Lighthouse asks before changing it instead of overwriting silently.
Buyer Readiness
Homebuying milestones
Mortgage Timeline
Track your path to close
Key Deadlines
Dates to keep on your radar
Servicing Deadlines
From your latest escrow analysis
What feeds it
Core documents for this home
Complete your profile
What's still missing
✕
Monthly Payment
—
LTV
—
PMI Status
—
Equity
—
Health Score
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↩ Your last conversation has been restored.
New: tap the Lighthouse logo above for a mortgage term of the day.
Lighthouse Logic
Navigate with confidence
Upload a Loan Estimate, paste a mortgage statement, or ask anything about your home loan.
Ready to send
Add a message below or send as-is

Mortgage Learning Center

Everything you need to know about buying and owning a home — broken down by stage, so you can navigate with confidence.

Market

Live mortgage rate benchmarks plus this week's housing market update, in one place.Live mortgage rate benchmarks plus this week's housing market update. Tap Rate Details for a personalized estimate.

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Fetching current rates from live market sources...
Rates aren't loaded yet. Tap below to fetch current benchmarks.
No schedule yet
Fill in your loan details in the sidebar and hit Generate Schedule.
ARM Adjustment Calculator
See exactly what your payment becomes at each rate adjustment — including worst-case scenarios.
Enter your ARM details
Fill in the fields in the sidebar to see your rate and payment scenarios here.
Escrow Payment Estimator
Estimate the monthly escrow portion of your payment and the cushion your servicer will likely collect. For your real shortage/overage status, upload your actual escrow analysis instead — this is a planning estimate, not a substitute for that document.
Enter your escrow inputs
Fill in property tax and insurance in the sidebar to see your estimated monthly escrow here.
Compare Loan Terms
Put two rate/term combinations side by side — same loan amount, different terms — and see the real monthly and lifetime-interest difference.
Enter both scenarios
Fill in Scenario A and B in the sidebar, then hit Compare to see the difference here.
Home Profile

Forms & Letters

Generate official mortgage letters and forms in minutes. Each template is built around your rights as a borrower — just fill in your details and Lighthouse does the rest.

Servicer Disputes & Errors
When your servicer made a mistake or won't respond
Federal Mortgage Law
Qualified Written Request (QWR)
Formally demand your servicer investigate an error or provide information. They must respond within 30 days by law.
Takes about 3 minutes
Federal Mortgage Law
Notice of Error
Formally notify your servicer of a specific error — misapplied payment, wrong balance, unauthorized fee. Triggers legal response obligations.
Takes about 3 minutes
Federal Mortgage Law
Request for Information
Formally request your servicer provide specific account information — payment history, escrow records, ownership details.
Takes about 2 minutes
Payoff & Refinancing
Getting official numbers before you make a move
Federal Mortgage Law
Payoff Statement Request
Formally request an exact payoff amount before refinancing or selling. Servicer must respond within 7 business days.
Takes about 2 minutes
HPA — Homeowners Protection Act
PMI Cancellation Request
Formally request PMI removal once you've reached 80% LTV. Servicers don't always make this easy — this letter puts it in writing.
Takes about 2 minutes
Authorization & Hardship
Give someone else access or get help during a difficult time
Servicer Authorization
Third-Party Authorization
Authorize a family member, attorney, or financial advisor to speak with your servicer on your behalf.
Takes about 2 minutes
Loss Mitigation
Hardship Letter
A properly formatted hardship letter explaining your situation when applying for a loan modification or forbearance.
Takes about 5 minutes
Federal Mortgage Law
Loss Mitigation Application Cover Letter
A cover letter to accompany your loss mitigation application that references your federal borrower rights.
Takes about 3 minutes
Escalation & Complaints
When your servicer isn't responding or doing the right thing
CFPB
CFPB Complaint Prep Letter
A summary letter you can use when filing a complaint with the Consumer Financial Protection Bureau against your servicer.
Takes about 4 minutes
Federal Mortgage Law
Escrow Analysis Dispute
Challenge an escrow analysis you believe is incorrect. Request a re-analysis and itemized breakdown of all calculations.
Takes about 3 minutes
Lighthouse Pro
Appearance
Activity
Lh Logic
Market
Data & Privacy
Appearance
Customize how Lighthouse looks and feels.
Appearance
Match System follows your device's light/dark setting automatically, including when it changes.
Font Size
Adjust the base text size across the app.
Reset Sidebar Width
Snap the sidebar back to its default width of 340px.
Lh Logic Behavior
Control how Lighthouse Logic responds to your questions.
Response Detail Level
Concise keeps answers short and direct. Detailed gives fuller explanations — better for complex topics.
Restore Last Session on Startup
When you open Lighthouse, automatically reload your last conversation and loan profile.
Default Landing Tab
Choose which tab Lighthouse opens to on startup, instead of always landing on Advisor.
Proactive Tips
Allow Lh Logic to flag opportunities (PMI removal, refinance windows, rate alerts) without being asked.
Response Notification Sound
Play a subtle sound when Lh Logic finishes a response.
Chat Bubble Style
Comfortable uses more padding and spacing. Compact tightens everything up.
Language
Lighthouse supports English and Spanish. Switching language affects the full UI and Lh Logic responses.
App Language
Changes the interface, forms, and letters. Lh Logic will also respond in the selected language.
Rate Alerts
Manage your saved rate target. Lighthouse checks this every time you open Market.
Current Rate Alert Target
No rate alert set.
Set New Target Rate
You will be notified when the 30-year fixed rate drops to or below this rate.
Auto-Refresh Rates
Automatically fetch current rates when you open Market. Turn off to load rates manually.
Lighthouse Pro
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Lighthouse
PRO
Thank you for supporting Lighthouse.
We truly appreciate your business.
Save this — it's all you need to restore Pro on any device
Upgrade to Pro
Unlimited Lighthouse Logic questions, unlimited Home Profiles, saved report exports, unlimited servicer/home value lookups, the full rate sheet (FHA, VA, Jumbo) and Housing Market Trends data, and pre-filled dispute/hardship letters — one payment of $24.99 covers a full year.
Already purchased Pro?
Switched devices or reinstalled the app? Restore Pro with the email you paid with.
PMI Reminder
Set a reminder for when to request PMI cancellation. Lighthouse will flag it when you open the app.
Target LTV for PMI Removal
You can request PMI cancellation at 80% LTV. Automatic termination happens at 78%.
PMI Reminder Date
Load a loan profile with PMI to set a reminder date.
Push Notifications
Get notified when mortgage rates move, even when you're not in the app.
Browser Notifications
Checking permission status...
Send a Test Notification
Verify notifications are working on this device.
What you'll be notified about:
Rate & market updates · Key deadline reminders · Escrow or PMI changes · Important regulatory updates that affect your loan
Your Statistics
A quick look at how you've used Lighthouse. Calculated from what's stored on this device — nothing is tracked remotely.
Reports Run
Health Scores, DTI checks, LE/CD comparisons, and more, across all your Home Profiles
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Documents Uploaded
Loan Estimates, Closing Disclosures, and statements Lighthouse has read
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Questions Asked
Messages you've sent to Lighthouse Logic
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Learning Center Articles Read
Out of the full library, marked read as you go
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Home Profiles Tracked
Owned and potential properties you've built a profile for
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My Data
Everything Lighthouse stores lives in your browser's local storage. Nothing is sent to any server except messages you send to Lh Logic.
Saved Loans
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Clear Saved Loans
Remove all saved loan profiles from this device. This cannot be undone.
Clear Document History
Remove all stored document summaries Lh Logic uses for reference. Does not delete uploaded files.
Clear Session History
Remove the saved conversation that restores on startup.
Clear All App Data
Wipe everything — loans, session, settings, rate alert. Resets Lighthouse completely.
Terms & Privacy
The legal terms governing your use of Lighthouse, in full.
Terms of Service
Last updated August 11, 2026
1. What Lighthouse Is
Lighthouse is a software tool that uses artificial intelligence ("Lh Logic") to help users understand mortgage-related documents and concepts. Lighthouse is an informational and educational tool only. It is not a mortgage lender, servicer, broker, financial institution, law firm, or licensed financial advisor, and does not originate, service, broker, or underwrite loans.
2. No Affiliation with Lenders or Servicers
Lighthouse Companies, LLC is an independent, standalone entity. Lighthouse is not owned by, operated by, endorsed by, or affiliated with any mortgage lender, loan servicer, bank, credit union, or other financial institution referenced within the Service or its output, including any servicer identified through the Servicer Lookup tool or named in a generated letter. Mentions of specific lenders or servicers are for informational and identification purposes only and do not imply any partnership, endorsement, or business relationship.
3. No Professional Advice; No Fiduciary Relationship
Nothing provided by Lighthouse constitutes professional mortgage, financial, legal, or tax advice. No advisor-client or fiduciary relationship is created. Always verify information independently and consult a licensed professional before making financial decisions.
4. AI-Generated Content; Accuracy Limitations
Lighthouse uses large language model technology, which may contain errors, omissions, or outdated information, and can misread uploaded documents. AI systems can produce plausible-sounding but incorrect output. You assume all risk of relying on any output from Lighthouse.
5. User Responsibilities
You agree to use Lighthouse only for lawful purposes, to only upload documents you have the right to upload, and not to attempt to reverse-engineer, scrape, overload, or interfere with the Service.
6. Your Data and Documents
You retain ownership of anything you upload. See the Privacy Policy below for what's collected and how it's handled.
7. Lighthouse Pro and Payments
Lighthouse Pro is a one-time payment that grants 365 days of access from the date of purchase. It is not an auto-renewing subscription — your card is never charged again automatically, and no notice is sent before access lapses. If you want to keep using Pro features after your year ends, you must return and pay again at whatever the price is at that time; a lapse does not entitle you to your original price. Payments are processed by Stripe, Inc.; Lighthouse never receives or stores your full card number. Because Lighthouse has no accounts or passwords, Pro access is tied to the email address used at checkout, which you can re-enter to restore access on a new device. All purchases are final; we do not offer refunds except where required by law, and price changes do not affect a purchase already completed.
8. Intellectual Property
Lighthouse, its name, logo, design, and underlying software are the property of Lighthouse Companies, LLC, protected by copyright, trademark, and other applicable laws.
9. No Warranty
Lighthouse is provided "as is" and "as available," without warranties of any kind, including accuracy or fitness for a particular purpose. We do not warrant the Service will be uninterrupted, error-free, or that AI output will be accurate or complete.
10. Limitation of Liability
To the maximum extent permitted by law, Lighthouse Companies, LLC and Lighthouse are not liable for indirect, incidental, special, consequential, or punitive damages, or loss of profits, data, or financial loss arising from your use of the Service. Your sole remedy for dissatisfaction is to stop using it.
11. Indemnification
You agree to indemnify and hold harmless Lighthouse Companies, LLC from claims, damages, or expenses arising from your use of the Service or violation of these Terms.
12. Third-Party Services
Lighthouse uses Google's Gemini API to generate AI responses, and Stripe, Inc. to process Lighthouse Pro payments. We are not responsible for the availability, accuracy, or practices of these or other third-party providers.
13–15. Changes, Termination, Governing Law
We may modify or discontinue the Service, or these Terms, at any time. We may suspend or terminate access for any reason, including a violation of these Terms. These Terms are governed by the laws of the State of Arizona.
16. Contact
Lighthousecompanies2026@gmail.com
Privacy Policy
Last updated August 10, 2026
1. Information We Collect
Documents you upload and data extracted from them, messages you send to Lh Logic, and any notes or saved loans you enter. We do not collect Social Security numbers or full account numbers, and currently require no account or login.
2. Where Your Data Lives
Lighthouse primarily stores your data in your browser's local storage, on your own device. This means your saved loans, documents, and chat history persist on the device you used, and aren't synced across devices or accessible by us directly. The one exception is Lighthouse Pro: if you purchase it, we store the email address you provide at checkout and confirmation the purchase went through, so Pro can be restored on other devices. That's the only information about you stored on our servers.
3. How We Use Your Data
Uploaded content and chat messages are sent to Google's Gemini API for processing, solely to generate the analysis, chat responses, and letters Lighthouse provides. We do not sell your personal information.
4. Third-Party Processing (AI)
Document content and chat messages are sent to Google's Gemini API for AI processing, governed by Google's own data practices.
5. Payment Processing and Lighthouse Pro
Payments for Lighthouse Pro are handled entirely by Stripe, Inc. We never receive or store your full card number. The email address you use at checkout and confirmation of your purchase are stored on our servers solely to activate and restore Pro — not for marketing, and never shared beyond what's needed to process the purchase.
6. Data Retention
Because data is primarily stored in your browser's local storage, it persists until you clear it. We do not retain copies of your documents or chat history on our servers beyond real-time processing. Your Lighthouse Pro purchase record is retained until you request its deletion.
7. Your Rights
You can exercise most data rights yourself by clearing your browser's local storage. California residents have rights under the CCPA, including the right to know, delete, and opt out of sale of personal information — we do not sell personal information. To delete your Lighthouse Pro purchase record specifically, contact us below.
8. Children's Privacy
Lighthouse is not directed to children under 13, and we do not knowingly collect information from them.
9. Security
We take reasonable measures to protect data in transit and rely on standard browser security for locally stored data. No method of transmission or storage is 100% secure.
10. No Affiliation with Lenders or Servicers
Lighthouse Companies, LLC is an independent, standalone entity. Lighthouse is not owned by, operated by, endorsed by, or affiliated with any mortgage lender, loan servicer, bank, credit union, or other financial institution referenced within the app or its output, including any servicer identified through the Servicer Lookup tool or named in a generated letter. Mentions of specific lenders or servicers are for informational and identification purposes only and do not imply any partnership, endorsement, or business relationship.
11. Contact
Lighthousecompanies2026@gmail.com
Documents
Guides and reference materials, kept separate from your day-to-day settings.
Feature Guide
A full walkthrough of everything Lighthouse can do.
Beginner's Guide
New to mortgages? Start here.
Beta Packet
What to expect as an early tester, and how to send feedback.
More guides will appear here as they're added.
About Lighthouse
What this app is, what it isn't, and how it works.
Lighthouse
Navigate with confidence
What Lighthouse Is
Lighthouse is an AI-powered mortgage advisor built to give everyday borrowers — especially first-time buyers and Spanish-speaking homeowners — the clarity and tools to navigate one of the most important financial decisions of their lives. Powered by Lh Logic, a specialized AI that knows federal mortgage law, agency guidelines, borrower rights, and servicer practices.
What Lighthouse Is Not
Lighthouse is not a licensed lender, mortgage broker, financial advisor, or attorney. It does not provide official loan quotes, rate locks, or legal advice. Everything Lh Logic tells you is educational — always verify with a licensed professional before making financial decisions.
How Your Data Is Used
Loan profiles and session history are stored only in your browser's local storage — they never leave your device. When you send a message to Lh Logic, that message and your loan context are sent to Google's Gemini API to generate a response. The one exception is Lighthouse Pro: if you purchase it, your checkout email and purchase confirmation are stored on our servers so Pro can be restored on other devices — see Settings > Terms & Privacy for details.
Keyboard Shortcuts
EnterSend message Shift+EnterNew line in message Ctrl+/Open Settings
Version
Lighthouse v1.0 — Navigate with confidence
Lh
Before you start
A quick, honest note about what Lighthouse is.
Lighthouse is educational, not advice. Lh Logic is an AI — not a licensed lender, broker, financial advisor, or attorney.
AI can be wrong. Always verify against your actual documents, your servicer, and a licensed professional.
Your data stays in your browser. Messages are sent to Google's Gemini API for responses.
Please review before continuing:
By continuing, you agree to Lighthouse's Terms of Service and Privacy Policy.
Welcome to Lighthouse.
Shining light on life's most important decisions —
from first question to final payoff.
Where are you in your mortgage journey?
For educational purposes only. Not a licensed financial advisor.
Buyer
How far along are you?
Homeowner
What brought you here today?
Here is where to start
As a buyer, Lighthouse works best when you give it context.
1
Upload a Loan Estimate
Lh Logic reads every line, flags red flags, and explains exactly what you are agreeing to.
2
Calculate your DTI
Know if you qualify before you apply. Lh Logic walks you through it step by step.
3
Ask anything
Rate negotiation, PMI, closing costs, loan types — Lh Logic knows federal mortgage law cold.
Here is where to start
Your mortgage statement is the starting point.
1
Upload your mortgage statement
Lh Logic calculates your Mortgage Health Score and tells you exactly where you stand.
2
Check your PMI and equity
See if you qualify to remove PMI today. Know your real equity position.
3
Dispute issues, generate letters
Servicer errors, escrow disputes, loss mitigation — all backed by federal law.
Start your Home Profile right now
or, if you'd rather look around first —
You're in
Here's what you've got.
Free, right now
8 Lighthouse Logic questions a day
3 core mortgage rates (30-yr, 15-yr, 5/1 ARM)
Full document red-flag detection — no limit
1 Home Profile
All calculators and the Learning Center — no limit
Lighthouse Pro — $24.99 for a full year
Unlimited Lighthouse Logic questions
Unlimited Home Profiles
Saved Home Profile report exports
Pre-filled dispute & hardship letters
Unlimited servicer & home value lookups
Full rate sheet (FHA, VA, Jumbo) & Housing Market Trends
You're all set
Taking you to Lighthouse Logic...