Home Addition in Dublin
Custom Home builds home additions in Dublin at $375-$550 per square foot. Whether you need a second-story addition, ground-floor expansion, or bump-out, our two-phase process delivers 3D visualization and itemized pricing before construction starts.
How much does a home addition cost in Dublin?
Home additions in Dublin typically cost $375-$550 per square foot in 2026. A 500 sqft addition ranges from $188K to $275K. Custom Home's design phase locks in your exact cost before construction starts.
Why Expand Your Dublin Home
In Dublin’s competitive housing market, expanding your current home often makes more financial sense than buying larger. A well-planned addition adds both space and property value. Excellent schools and family-oriented communities drive demand for well-designed homes.
Custom Home designs and builds home additions with the same two-phase process we use for custom homes. You see the complete addition in 3D and receive itemized pricing before construction begins.
Types of Home Additions We Build in Dublin
Second-Story Additions
Double your living space by building up rather than out. Second-story additions are ideal when lot coverage limits prevent ground-floor expansion. Custom Home’s structural engineers evaluate your existing foundation to determine what reinforcement is needed.
Ground-Floor Room Additions
Extend your home’s footprint with new bedrooms, family rooms, or home offices. Ground-floor additions integrate with your existing layout and maintain single-level living, which is especially valued in Dublin.
Bump-Outs and Extensions
Smaller expansions that make a significant difference: extend your kitchen, enlarge a bathroom, or add a sunroom. Bump-outs typically cost less and complete faster than full additions.
Structural Considerations for Dublin Additions
Home additions in Dublin require careful structural planning to ensure the new space integrates safely with the existing structure. Custom Home’s engineering team handles foundation evaluation, load-bearing wall modifications, and structural design. Whether you are adding a second story or expanding your footprint, structural engineering is included in our Phase 1 design process.
Dublin Home Addition Permits
Dublin’s Building and Safety Division processes residential permits through their online portal. Standard plan review takes 3-6 weeks for most residential projects. The city’s Building and Safety Division is experienced with new construction, given Dublin’s significant growth over the past two decades.
Custom Home manages the entire addition permitting process, including structural engineering review, plan submittal, and inspection coordination. Our experience with Dublin’s requirements helps keep the approval process on track.
Pricing for Home Addition in Dublin
Home addition costs in Dublin typically run $375-$550 per square foot, similar to new construction pricing. Second-story additions may cost more due to structural reinforcement requirements. Custom Home's Phase 1 design process locks in exact pricing before construction begins.
Dublin Permit Requirements
Dublin's Building and Safety Division processes residential permits through their online portal. Standard plan review takes 3-6 weeks for most residential projects. The city's Building and Safety Division is experienced with new construction, given Dublin's significant growth over the past two decades. Custom Home manages the full addition permitting process, including structural engineering review.
Home Addition in Dublin: FAQ
How much does a home addition cost in Dublin?
Home additions in Dublin typically cost $375-$550 per square foot. A 400 sqft room addition generally ranges from $150K to $220K. Second-story additions may cost more due to structural reinforcement. Custom Home locks in exact pricing during Phase 1.
How long does a home addition take in Dublin?
Home additions in Dublin typically take 6-12 months from design to completion. Second-story additions require 8-14 months due to additional structural work. Custom Home's design phase ensures construction runs efficiently and on schedule.
Do I need to move out during a home addition in Dublin?
For most additions, you can remain in your home during construction. Second-story additions may require temporary relocation during certain phases. Custom Home plans the construction sequence during the design phase so you know what to expect.