How Building Permits Work

12 min read

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Homeowner Summary

The building permit process is more straightforward than most homeowners expect. For simple projects like a water heater replacement or an HVAC system swap, you can often apply online, pay a small fee, and have a permit in hand within a few days. For larger projects like room additions or structural modifications, the process involves plan review by the building department, which can take several weeks but ensures your project is designed safely before construction begins.

Understanding the process helps you plan realistic timelines and avoid delays. The most common cause of permit delays is incomplete applications: missing information, insufficient drawings, or failing to include required documents. The second most common cause is failing to schedule inspections at the right time, which can halt work until the inspector verifies the previous stage was done correctly.

Whether you or your contractor pulls the permit, you as the homeowner are ultimately responsible for ensuring the work is permitted, inspected, and the permit is closed out with a final inspection. Open permits (work started but never given final approval) create problems that follow the property, not the contractor, and can surface during refinancing or sale.

How It Works

The Permit Application Process

Step 1: Determine requirements. Contact your local building department or check their website to confirm whether your project requires a permit and what type. Most jurisdictions have separate permits for building (structural), electrical, plumbing, and mechanical (HVAC) work. A bathroom addition might require all four.

Step 2: Prepare your application. Gather the required information:

Property information: address, parcel number (from your property tax records), lot size
Scope of work: detailed description of what you plan to do
Plans/drawings: required complexity depends on the project:
- Simple projects (HVAC replacement, water heater, re-roof): may only need a scope description and equipment specifications
- Moderate projects (deck, fence, window replacement): site plan showing property lines and setbacks, plus construction drawings
- Complex projects (addition, structural modification, new construction): engineered plans prepared by an architect or structural engineer, site plan, surveys
Contractor information: if using a contractor, their license number, insurance, and contact information
Property owner consent: if a contractor is pulling the permit, the owner may need to sign the application

Step 3: Submit the application. Many jurisdictions now accept online applications through permit portals. Others require in-person submission at the building department.

Over-the-counter permits: for simple projects, permits may be issued immediately at the counter or within 24-48 hours online. Common for HVAC replacements, water heater replacements, re-roofing, and basic electrical/plumbing work.
Plan review permits: for projects requiring drawings and engineering, the building department reviews plans against applicable codes. This review period typically takes 1-4 weeks for residential projects, but can extend to 6-8 weeks in busy jurisdictions or for complex projects.

Step 4: Pay fees. Permit fees are based on project value, square footage, or a flat fee schedule. Typical range:

Simple mechanical/electrical/plumbing: $50-$300
Roofing: $100-$500
Decks and fences: $100-$400
Additions and major remodels: $500-$2,000+ (based on project value, often 1-2% of construction cost)

Step 5: Receive your permit. Once approved, you receive a permit document that must be posted visibly at the job site (typically in a window facing the street). The permit includes the approved scope of work, required inspections, and expiration date.

Who Can Pull a Permit

Homeowner: in most jurisdictions, you can pull a permit for work on your own primary residence. You assume the role of general contractor and are responsible for code compliance. Some types of work (gas piping, electrical in some states) may still require a licensed professional even if you pull the permit.

Licensed contractor: the most common approach. The contractor pulls the permit, manages inspections, and is professionally responsible for code compliance. Their license and insurance are on file with the building department.

Important distinction: if you hire a contractor, the contractor should pull the permit. If a contractor asks you to pull the permit yourself to "save time," this is a red flag. It may mean they're unlicensed, and it shifts liability from them to you.

Inspections

Inspections are the critical checkpoints in the permit process. Work must be inspected at specific stages before proceeding to the next stage:

Typical inspection sequence for a building permit:

Foundation/footing inspection: before pouring concrete, inspector verifies excavation depth, rebar placement, and soil conditions
Rough framing inspection: after framing is complete but before insulation or drywall. Inspector checks structural members, connections, nailing patterns, headers, and fire blocking.
Rough-in inspections (electrical, plumbing, mechanical): after wiring, piping, and ductwork are installed but before walls are closed. Inspector verifies code compliance for each trade.
Insulation inspection: after insulation is installed but before drywall. Inspector verifies R-values, vapor barrier placement, and air sealing.
Final inspection: after all work is complete. Inspector does a comprehensive review of the finished project: outlets tested, fixtures functioning, smoke detectors, proper labeling, and overall code compliance.

For simpler projects (HVAC replacement, water heater, re-roof), typically only a final inspection is required.

Scheduling inspections: most jurisdictions allow online or phone scheduling. Inspections are usually available within 1-3 business days of the request. You or your contractor must be present. The inspector will either approve (pass) or note corrections needed (fail). Failed inspections require corrections and a re-inspection.

Certificate of Occupancy (CO)

For new construction or projects that change the use or occupancy of a space (converting a garage to living space, finishing a basement, building an accessory dwelling unit), a Certificate of Occupancy is required after the final inspection. The CO confirms the space is safe for occupancy and complies with all applicable codes. The space cannot legally be occupied until the CO is issued.

Permit Expiration

Permits have a limited lifespan, typically 6-12 months from issuance (varies by jurisdiction). If work isn't started within this period, or if there's no inspection activity for an extended period, the permit expires. Expired permits require renewal (with fees) or a new application. This is a common problem with projects that stall or are delayed.

Maintenance Guide

DIY (Homeowner)

Research before applying: check your jurisdiction's website for application requirements, fee schedules, and submission methods
Prepare complete applications: incomplete applications are the #1 cause of delays. Include all required documents, drawings, and contractor information.
Keep copies of everything: permit application, approved permit, inspection results, and final approval
Post the permit: keep the approved permit posted at the job site as required
Schedule inspections on time: don't proceed past an inspection stage before the inspection is scheduled and passed
Close out permits: ensure your contractor schedules the final inspection and the permit is officially closed. An open permit is a liability on your property.
Check for open permits: before buying a home, check the building department for any open permits from previous owners

Professional

Pull permits for all required work; never suggest skipping permits
Submit complete, professional applications with clear drawings and specifications
Schedule inspections at appropriate stages; never cover work before inspection
Be present or have a qualified representative present for inspections
Address inspection corrections promptly and schedule re-inspections
Close out all permits with final inspections before leaving a job
Provide homeowners with copies of permits, inspection results, and final approval
Factor permit timeline into project schedule: plan review takes 1-4 weeks

Warning Signs

Contractor unwilling to pull permits or suggesting you pull them yourself
Building department repeatedly returning applications as incomplete
Inspections being skipped or work proceeding before inspection
Permit expired due to project delays (needs renewal before work continues)
No final inspection scheduled after work is complete (permit remains open)
Property records show open permits from years ago (previous owner issue)
Contractor cannot provide permit number when asked

When to Replace vs Repair

Decisions about the permit process itself:

Online vs in-person: use online portals when available (faster processing, digital record keeping, 24/7 access)
DIY application vs contractor-pulled: let your contractor pull the permit unless you're doing the work yourself. Contractor-pulled permits keep professional liability with the contractor.
Standard process vs permit expediter: for time-sensitive projects, a permit expediting service ($200-$500) can navigate the process faster, especially in jurisdictions with long processing times
Residential vs commercial process: if your project is large enough to trigger commercial code review (varies by jurisdiction), consider hiring an architect or permit expediter who specializes in that process

Pro Detail

Specifications & Sizing

Typical permit timeline by project type:

| Project | Application to Permit | Inspections Required | Total Timeline | |---------|----------------------|---------------------|----------------| | Water heater replacement | Same day - 3 days | Final only | 1-2 weeks | | HVAC replacement | Same day - 3 days | Final only | 1-2 weeks | | Re-roofing | 1-5 days | Final only | 2-3 weeks | | Electrical panel upgrade | 1-5 days | Rough + final | 2-4 weeks | | Deck (under 200 sq ft) | 3-10 days | Footing + final | 3-6 weeks | | Bathroom addition | 2-4 weeks (plan review) | Multiple stages | 8-16 weeks | | Room addition | 3-6 weeks (plan review) | Multiple stages | 12-24 weeks | | ADU (accessory dwelling unit) | 4-8 weeks (plan review) | Multiple stages | 16-40 weeks |

Application completeness checklist:

| Required Element | Simple Projects | Complex Projects | |-----------------|----------------|-----------------| | Application form | Yes | Yes | | Property address and parcel # | Yes | Yes | | Scope of work description | Yes | Yes | | Contractor license # and insurance | Yes (if using contractor) | Yes | | Site plan with setbacks | Sometimes | Yes | | Construction drawings | No (equipment specs only) | Yes (to scale) | | Structural engineering | No | Yes (if structural) | | Energy compliance documentation | Sometimes | Yes | | Property owner authorization | Yes | Yes | | Fee payment | Yes | Yes |

Common Failure Modes

| Issue | Cause | Impact | |-------|-------|--------| | Application rejected | Missing information or drawings | 1-2 week delay while corrections are made | | Plan review comments | Code violations in proposed design | Redesign required; 2-4 weeks additional review | | Failed inspection | Work doesn't meet code | Must correct and schedule re-inspection ($50-$150 fee) | | Expired permit | Work delayed beyond permit validity period | Renewal fees; possible new application required | | Open permit at sale | Final inspection never completed | Delays closing; may require bringing work up to current code | | Wrong permit type | Applied for wrong category | Must reapply with correct permit type | | Contractor pulled permit then abandoned project | Contractor stopped work or disappeared | Homeowner must resolve; may need new contractor and new permits |

Diagnostic Procedures

Jurisdiction identification: determine which building department has authority over your property. It may be a city, town, or county building department. Properties in unincorporated areas typically fall under county jurisdiction.
Online portal check: search for "[your city/county] building permits" to find the online portal. Most jurisdictions now offer online applications, fee payment, and inspection scheduling.
Pre-application meeting: for complex projects (additions, ADUs, structural modifications), request a pre-application meeting with the building department. They'll tell you exactly what's needed before you invest in full plans.
Permit history search: search your property address in the building department's online records to see all past permits, their status (open, closed, expired), and inspection history.

Code & Compliance

Building departments are authorized by state law to adopt and enforce building codes
Most jurisdictions adopt the International Residential Code (IRC) for one- and two-family dwellings, with local amendments
Separate codes apply to electrical (NEC), plumbing (UPC or IPC), mechanical (IMC), and energy (IECC)
Plan review ensures proposed work complies with all applicable codes before construction begins
Inspections verify that actual construction matches approved plans and meets code
Permit records are public documents; anyone can request the permit history of a property
Some jurisdictions require third-party inspections for specific items (structural special inspections, energy testing)
Fire department review may be required for projects involving fire separation, egress, or fire suppression

Cost Guide

| Item | Cost | Notes | |------|------|-------| | Over-the-counter permit (simple) | $50-$300 | Same-day or next-day issuance | | Plan review permit (complex) | $200-$2,000+ | 1-2% of project value in many jurisdictions | | Plan review expediting | $200-$500 additional | Available in some jurisdictions for faster processing | | Re-inspection fee | $50-$150 | Charged when first inspection fails | | Permit renewal/extension | 50-100% of original fee | When permit expires before work is complete | | Permit expediting service | $200-$500 | Professional navigates the process for you | | Architectural drawings (simple) | $500-$2,000 | Required for plan review projects | | Structural engineering | $500-$3,000 | Required when structural changes are involved | | Energy compliance report | $200-$500 | Required for projects triggering energy code | | Survey/site plan | $300-$800 | Required for projects near property lines or setbacks |

Hidden costs of not getting permits: | Risk | Potential Cost | |------|---------------| | Fines for unpermitted work | $250-$10,000+ | | Retroactive permitting (double fees) | 2-4x normal permit cost | | Required demolition to inspect | $2,000-$20,000 | | Reduced sale price | 5-15% of project value | | Failed sale / delayed closing | Months of carrying costs | | Insurance claim denial | Full loss amount |

Energy Impact

The permit process directly supports energy efficiency in homes:

Energy code review: permitted work must comply with the current energy code (IECC). Plan reviewers verify insulation R-values, window U-factors, air sealing details, and HVAC equipment efficiency before approving plans.
Inspection verification: energy-related inspections verify insulation installation, air barrier continuity, duct sealing, and equipment installation. These inspections catch deficiencies that would waste energy for the life of the home.
Equipment permits: permitted HVAC replacements are verified for proper sizing (Manual J), duct design (Manual D), and equipment efficiency, ensuring homeowners get the performance they're paying for.
Blower door testing: many jurisdictions now require blower door testing for new construction and major renovations as part of the final inspection, verifying the home meets air tightness standards.

Shipshape Integration

Shipshape supports proper permitting practices through dealer workflow integration and homeowner documentation:

Dealer permit tracking: when Shipshape dealers perform installations that require permits, SAM's workflow includes permit number entry, inspection scheduling, and final inspection confirmation. This prevents permits from being left open and creates a permanent record of proper permitting.
Homeowner education: SAM helps homeowners understand which maintenance activities they can do themselves and which improvements require permits and professional installation. This prevents well-intentioned DIY projects from becoming unpermitted work.
Property permit history: SAM stores permit records as part of the home's profile, creating a comprehensive history of all permitted work. This documentation is valuable for insurance claims, resale, and future renovation planning.
Inspection scheduling integration: dealers using Shipshape can track inspection schedules and results as part of their project workflow, ensuring inspections happen on time and are properly documented.
Home Health Score factor: properly permitted and inspected work contributes positively to the Home Health Score. Equipment installations without corresponding permit documentation are flagged for review.