Decks, Patios & Additions in Highland, MD & the DC Metro

Western Apex Solutions builds decks, patios, screened porches, and home additions for homeowners in Highland, Maryland and across the DC–Baltimore metro: Bethesda, Potomac, Rockville, Chevy Chase, Columbia, Ellicott City, and Baltimore. Built to last through the seasons.

Every decks & additions job, done right

  • Custom decks. Pressure-treated, cedar, composite decking systems composite decks with hidden fasteners.
  • Screened porches. Three-season and four-season porches with pressure-treated framing, composite floors, and sliding-window-panel systems or fixed glass.
  • Patios. Flagstone, paver, and concrete patios with proper base, drainage, and edging.
  • Pergolas and shade structures. Cedar and aluminum pergolas, sail shades, and louvered roofs.
  • Room additions. Family-room, bedroom, mudroom, and primary-suite additions — foundation, framing, electrical, plumbing, and finish.
  • Garage builds. Detached and attached garages with proper foundation and code-compliant framing.
  • Fences. Wood, vinyl, aluminum, and composite fences — privacy, picket, and pool fences.
  • Permits and inspections. We pull permits and coordinate inspections with Howard County, Montgomery County, or Baltimore building departments.

How we work

  1. Walk-through. We see the property, talk about how you'll use the space, and review HOA constraints.
  2. Design. Sketches and 3D renderings for larger projects so you can see it before we build.
  3. Permits. We handle permit drawings and submission.
  4. Build. Foundation, framing, decking, finish work — in the right order, weather-aware.
  5. Inspection and walkthrough. Pass the final inspection, walk you through care, and clean the site.

Decks & Additions across the DC & Baltimore metro

Western Apex Solutions handles decks & additions for homeowners across Howard County and Montgomery County, plus Baltimore: Highland, Columbia, Ellicott City, Clarksville, Bethesda, Potomac, Rockville, Chevy Chase, Silver Spring, Olney, Baltimore, Laurel.

Frequently asked questions

Composite vs. wood deck — which is better?
Composite (composite decking systems) lasts longer with no staining/sealing required — 30 years vs. 10–15 for treated wood. Higher upfront cost, lower lifetime cost. We build both.
How much does a deck cost in Bethesda or Potomac?
Highly variable by size, height, material, and railings. A simple 12x16 pressure-treated deck runs much less than a 20x30 composite deck with stairs and built-in seating. Free estimates with itemized pricing.
Do I need a permit for a deck?
In Howard County, Montgomery County, and Baltimore: yes for most decks, especially those over 30 inches off grade or attached to the house. We pull permits as part of the project.
How long does a room addition take?
Typical timeline: 12–20 weeks from permit submission, depending on size, finishes, and inspection schedules.
Can you match an addition to my existing house?
Yes — siding, roof, trim, brick — we match materials and detailing so the addition looks original to the house.
Do you build screened porches?
Yes — three-season with screen, four-season with sliding-window-panel systems or fixed glass.

Ready to start your decks & additions project?

Tell us about your home and we'll put together a free, itemized estimate.

Get a Free Estimate Call (301) 202-4109