Deck, Sunroom & Pergola Builders in Harford County, MD

Why Harford County homeowners hire Custom Design & Build

Harford County is our home. Our shop sits on Belair Road in Fallston, so most of the county is inside a 20-minute drive. That is why so much of our work happens here. We know the Harford County permit office, the local inspectors, and the little details that trip up out-of-area builders. Bel Air's clay soil, Forest Hill's elevation and wind, Havre de Grace's Critical Area rules on the waterfront: none of it is a surprise when we design your project.

We are MHIC #91686-licensed, Trex Pro Platinum, an authorized Sunspace dealer, and Azenco-certified for motorized louvered pergolas. Every Harford County project is custom-designed, permitted, and built end to end by our own crews. No subcontracted middlemen.

Services we build in Harford County

Towns we serve in Harford County

Every town has its own service-area page with local notes on neighborhoods, permits, and past projects.

• Bel Air, MD
• Forest Hill, MD
• Fallston, MD
• Aberdeen, MD
• Havre de Grace, MD
• Joppa, MD
• Jarrettsville, MD
• Edgewood, MD

Permits and inspections in Harford County

Every Harford County build gets a proper permit. We prepare the plans, submit them to the county, schedule the inspections, and close the permit out at final. If your build sits in a Critical Area near the water or inside an HOA that reviews outdoor structures, we handle that review as part of the design phase. Greenhouses follow the same rule as any accessory structure here: Harford requires a permit at every size, including prefabricated units, before anything is placed on the property.

For a full walk-through of what a permit application looks like on a three-season room, read our permit and zoning checklist.

A recent Harford County review

"Mark and Co. were professional before, during and after. Was concerned about designing the deck with a large staircase that would have to wrap around. Mark delivered a condensed staircase that didn't have to wrap and worked great for our needs. Would recommend CD&B for anyone looking for a deck or other projects around your home."

Pricing and next step

Most Harford County sunroom, deck, and pergola projects fall between $20,000 and $150,000+, depending on size, materials, and site conditions. Use our interactive pricing calculator for a 60-second ballpark, or start a free phone conversation.