Building Permit Guides

Practical answers to the permit questions that actually matter — for homeowners, renovators, buyers, and investors.

Getting Started

Beginner Guide

Building Permits 101

When do you need a permit? How do you get one? What does it cost? A complete guide.

Must Read

What Happens If You Build Without a Permit?

Fines, forced demolition, insurance denials, and sale complications.

Costs

The True Cost of Unpermitted Work

A $200 permit vs $20,000+ in fines, demolition, and lost home value.

Planning Your Project

ADU Guide

ADU Permit Requirements

Costs, timelines, state-by-state rules, and how to get your ADU approved.

ROI Analysis

Renovation ROI vs Permit Cost

Does skipping the permit save money? The math says no.

Budgeting

Fixer-Upper Permit Costs

How to budget for permits by project type and hidden fees to watch for.

Essentials

Certificate of Occupancy Guide

When you need a CO, how to get one, and what happens without it.

Buying a Home

Due Diligence

Permit Due Diligence Before Buying

How to research a property's permit history and what to watch for.

Inspections

Why Permit History Matters in Inspections

What permit records reveal that a home inspection doesn't.

Financing

Permits, Appraisals, and Your Mortgage

How unpermitted work affects your appraised value and mortgage.

Selling Your Home

Legal

Disclosure Requirements by State

Must you disclose unpermitted work? State-by-state rules.

ROI

Pre-Sale Renovation ROI Guide

Which improvements deliver the best return before listing.

Investors & Flippers

Flipping

House Flipping Permits Guide

Which renovations need permits, budgeting, and timeline tips.