Deck / Patio Permit Requirements in Towson, MD
Unincorporated community in Baltimore County. County seat. Permits through Baltimore County.
When you DON'T need a permit
Freestanding decks not more than 30 inches above grade are exempt from a building permit per Maryland Building Performance Standards (2018 IRC).
Source: Maryland Building Performance Standards (2018 IRC)
When you DO need a permit
Attached decks require a building permit even if under 30 inches, as the ledger board attachment affects the dwelling structure.
Estimated fee: $90 – $315
Typical timeline: About 2 weeks
Source: Maryland Building Performance Standards (2018 IRC)
Decks more than 30 inches above grade require a building permit with structural plans.
Estimated fee: $135 – $450
Typical timeline: About 2 weeks
Source: Maryland Building Performance Standards (2018 IRC)
Covered decks or those over 300 sq ft require a building permit and may trigger zoning review.
Estimated fee: $180 – $540
Typical timeline: About 3 weeks
Source: Maryland Building Performance Standards (2018 IRC)
Decks may be subject to zoning setback and lot coverage requirements. Check with your local planning department before building near property lines.
Check your specific project
Answer a few quick questions to get a personalized answer for your exact project.
Check Now — Free →Free Lookup vs. Pro Report
$7.99Less than a coffee. Could save you a $5,000 fine.
- Permit required / exempt answer
- Code citation
- Estimated fee range
- Approval timeline
- Building dept contact
- Step-by-step application guide
- Required documents checklist
- Complete fee breakdown
- Contractor vs. owner-builder info
- Setback & height requirements
- Printable PDF-ready report
One-time payment. 30-day money-back guarantee.
Contractors: speed up your bidding — get exact requirements for your client in seconds.
Building Department Contact
Frequently Asked Questions
Estimated permit fees for Deck / Patio projects in Towson, MD range from $90 – $315. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Deck / Patio projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Towson can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Deck / Patio permits in Towson is About 2 weeks. More complex projects may take longer if plan review is required.
Learn More About Deck / Patio Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Deck / Patio Guide →