"Sunlit living room with limestone fireplace, white shiplap built-in cabinets, vintage decor, and warm ambient lighting"

Transform Your Living Room with Fireplace Built-Ins: A Complete Design Guide

The Basics: What You Need to Know About Fireplace Built-In Projects

Let’s start with some hard facts about what you’re getting into:

Time Investment:

  • Photography (for before/after): 2-3 hours
  • Styling and arranging: 4-6 hours
  • Total project planning to completion: 8-10 hours (not including construction)

Space Requirements:

  • Ideal room size: 12×18 ft living room with central fireplace
  • You’ll need at least 2-3 feet on either side of your fireplace for standard built-ins

Skill Level & Budget:

  • DIY Difficulty: Moderate (basic carpentry skills required)
  • Budget Options:
    • Budget-Friendly ($500-$1,500): IKEA Billy Bookcase hack
    • Mid-Range ($2,000-$5,000): Semi-custom built-ins
    • High-End ($5,000+): Custom floor-to-ceiling designs with premium finishes

Warm 12x18ft living room at golden hour with sunlight through sheer curtains, central limestone fireplace, farmhouse-style built-ins with shiplap, vintage decor, and natural wood accents.

Choosing Your Style: Finding the Perfect Look

Your fireplace built-ins should complement your home’s overall aesthetic. Here are the most popular styles I’ve installed for clients:

Farmhouse Style Built-Ins
  • Shiplap backing
  • Distressed white or cream finishes
  • Open shelving with baskets
  • Natural wood accents

Modern living room at dusk with black built-ins, floating shelves, LED lighting, and burgundy accents against white walls and a concrete fireplace.

Modern Built-Ins
  • Clean lines and minimal ornamentation
  • High-contrast colors (black cabinets with white shelves)
  • Hidden storage behind sleek cabinet doors
  • Floating shelves

Transitional living room in morning light with Shaker-style built-ins, grasscloth-backed shelves, warm greige cabinets, navy accents, and aged brass fixtures.

Transitional Built-Ins
  • Combines traditional cabinet faces with contemporary hardware
  • Neutral color palette with subtle accent colors
  • Mix of open and closed storage
  • Textured elements like grasscloth backing

Coastal living room with seafoam green built-ins, white brick fireplace, blue-and-white ceramics, and natural rattan accents in soft morning light.

Coastal Built-Ins
  • Light blue or seafoam green painted cabinets
  • Beadboard details
  • Glass-front cabinets
  • Natural rattan or rope accents

Project Planning: Setting Yourself Up for Success

Before you grab a hammer or head to IKEA, here’s what you need to plan:

  1. Measure your space thoroughly
    • Height from floor to ceiling
    • Width on each side of fireplace
    • Depth available (standard is 12-16 inches)
  2. Consider your storage needs
    • Books, media, and display items
    • Hidden storage for kids’ toys or electronics
    • Specialized storage (wine racks, file drawers)
  3. Decide on your DIY approach
    • Full DIY (building from scratch)
    • Semi-DIY (IKEA hack)
    • Hiring professionals

The IKEA Billy Bookcase Hack: Budget-Friendly Built-Ins

IKEA Billy bookcase hack flanking fireplace with custom trim and crown molding, styled shelves with books, baskets, and vintage decor in warm gray room.

Materials Needed:

  • Billy bookcases (width depends on your space)
  • MDF boards for trim
  • Crown molding
  • Base molding
  • Wood filler
  • Primer
  • Paint
  • Hardware (if adding cabinet doors)

Step-by-Step Process:

  1. Assemble Billy bookcases according to instructions
  2. Remove baseboards where bookcases will go
  3. Secure bookcases to wall with provided brackets
  4. Add MDF trim to fronts to create built-in look
  5. Install crown molding at ceiling junction
  6. Add base molding to match existing baseboards
  7. Fill seams and screw holes with wood filler
  8. Sand smooth, prime, and paint entire unit
  9. Add cabinet doors if desired (IKEA sells compatible options)

Pro Tip: Remove the thin backing that comes with Billy bookcases and replace with shiplap or beadboard for a more custom look!

Mid-Range Option: Semi-Custom Built-Ins

What Makes Them “Semi-Custom”:

  • Stock cabinet bases with custom shelving
  • Standard sizes but with your choice of finishes
  • Mix of ready-made and custom components

Best Sources:

  • Local cabinet shops
  • Home improvement stores’ custom cabinet departments
  • Online semi-custom cabinet companies

Design Features Worth the Splurge:

  • Cabinet doors with glass inserts
  • Integrated lighting
  • Pull-out drawers
  • Adjustable shelving

High-End Option: Full Custom Built-Ins

High-end built-in cabinetry with arched designs, integrated LED lighting, walnut interiors, and ambient fireplace glow during blue hour.

Luxury Features:

  • Floor-to-ceiling designs
  • Curved or arched details
  • Premium hardwoods
  • Hand-distressed finishes
  • Hidden doors or compartments
  • Integrated electronics

Finding the Right Craftsperson:

  • Ask for portfolio examples specifically of fireplace built-ins
  • Check references from past clients
  • Request detailed quotes including timeline and materials
  • Review their construction methods (dovetail joints, solid wood vs. veneer)

Styling Your Fireplace Built-Ins

The Rule of Thirds