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Home Additions

Seamless, professional home expansions that add space, value, and beauty - handled from permits to final walkthrough in Maryland.

Maryland's Addition Specialists

Expand Your Home Without the Hassle

Running out of space? Instead of moving, expand. Cliffbrook Construction LLC builds home additions that blend seamlessly with your existing structure - looking and feeling like they've always been there. From a simple bump-out to a full second-story addition, we handle every aspect of the project.

We manage the entire process - architectural planning, permit procurement, foundation work, framing, roofing, plumbing, electrical, insulation, and all interior and exterior finishes. You get a complete, turn-key addition built to Maryland code and to the highest quality standards.

What's Included in Our Home Additions

  • Room Additions
  • Second Story Additions
  • Sunroom & Porch Builds
  • Garage Conversions
  • In-Law Suite Construction
  • Bump-Out Extensions
  • Foundation & Framing Work
  • Permit Procurement
  • Roofing & Exterior Matching
  • Plumbing & Electrical
  • Insulation & HVAC
  • Interior Finishing
Get Free Addition Estimate
Home addition project by Cliffbrook Construction LLC Maryland
100+
Additions Built
4.9★
Average Rating
Free
In-Home Estimate
100%
Permit Managed
Types of Additions

Home Addition Options We Build

Every home is different. We offer a full range of addition types to fit your space, budget, and lifestyle needs.

Room Additions

Add a new bedroom, home office, family room, or living space. We design additions that match your home's existing architecture perfectly - inside and out.

Second Story Additions

Double your living space without losing your yard. Our structural engineers and build team handle everything from foundation reinforcement to roofing and final finishes.

Sunrooms & Three-Season Rooms

Bring the outdoors in with a beautiful sunroom or screened porch. Custom-designed with energy-efficient glass to enjoy natural light all year round.

Garage Conversions

Transform your unused garage into a livable space - home gym, office, guest suite, or entertainment room. We handle insulation, flooring, HVAC, and all finishes.

In-Law Suites

Create a comfortable, private living space for family members. Full bathroom, kitchenette, separate entrance, and all accessibility features available.

Bump-Out Extensions

A cost-effective way to add just a few hundred square feet where you need it most - perfect for expanding a kitchen, adding a breakfast nook, or enlarging a bedroom.

Our Work

Recent Home Addition Projects

Real home expansions we've built for Maryland homeowners - seamlessly designed and expertly constructed.

Home addition project 1 — Cliffbrook Construction
Home addition project 2 — Cliffbrook Construction
Home addition project 3 — Cliffbrook Construction
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Smart Investment

Why Add Instead of Move?

A home addition is often more cost-effective than buying a new home - and you keep the neighborhood you love.

80%

Cost vs. Moving

Home additions typically cost 50–80% less than buying a larger home in the same neighborhood - making it the smart financial choice.

+35%

Home Value Increase

A well-designed home addition can increase your property value by 30–40%, making it one of the highest-ROI home improvement projects available.

0

Moving Stress

Stay in the home and neighborhood you love. No agent fees, no moving costs, no uprooting your family - just more space exactly where you want it.

We Handle All Permits & Inspections

Home additions in Maryland require building permits, structural plans, and multiple inspections. Cliffbrook Construction manages the entire permit process on your behalf - filing applications, coordinating inspections, and ensuring your addition meets all Prince George's County and Maryland building codes. You don't have to worry about a thing.

Our Process

How Your Home Addition Gets Built

A detailed, transparent process - from your first call to the moment you walk into your new space for the first time.

1

Free Consultation & Site Assessment

We visit your home, evaluate the property, discuss your goals and budget, and assess structural feasibility. You get honest guidance with no pressure - completely free.

2

Design & Architectural Planning

Our design team creates detailed architectural drawings and 3D renderings of your addition. We work with you to finalize the layout, materials, and all design details before breaking ground.

3

Permits & Approvals

We file all permit applications with Prince George's County, handle the review process, and schedule all required inspections. This step typically takes 4–8 weeks depending on your municipality.

4

Foundation & Framing

Once permits are in hand, we begin with site preparation, foundation work (if needed), and structural framing. This phase sets the bones of your new space and requires precise, careful craftsmanship.

5

Mechanical, Electrical & Plumbing

Licensed subcontractors run all HVAC, electrical, and plumbing rough-ins. All work is inspected and approved before insulation and drywall are installed.

6

Interior & Exterior Finishes

Insulation, drywall, flooring, trim, paint, fixtures, and all exterior siding, roofing, and windows are completed to match your existing home seamlessly.

7

Final Inspection & Walkthrough

We complete the final municipal inspection, then walk through every inch of your new addition together. We don't consider the job done until you're 100% satisfied.

Happy Clients

What Our Addition Clients Say

"We added a stunning sunroom and the result is absolutely breathtaking. They handled everything from permits to final touches - stress free from start to finish."
RL
Robert L. Sunroom Addition - College Park, MD
"Turned our unfinished basement into a beautiful living space. The team was on time, on budget, and the quality of work exceeded our expectations completely."
MT
Michael T. Basement Conversion - Upper Marlboro, MD
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Related Services

Kitchen Remodeling

Expand your addition into a dream kitchen - custom cabinets, countertops, islands & more.

Bathroom Remodeling

Add a new master bath or en-suite as part of your home addition project.
Start Your Addition Project

Ready to Expand Your Home?

Contact Cliffbrook Construction today for a free in-home consultation. We'll assess your property, discuss your options, and provide a detailed estimate - no obligation, no pressure.

Get Free Addition Estimate (301) 356-1724