Generational Suitesby Watermark Design Build
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Archetype A · Attached

The Suite

An attached extension that reads as original construction

Planning range

$145,000 – $195,000

Range moves with your existing rooflines, structural tie-in requirements, and where your utility taps sit.

Configuration
Attached addition or garage conversion
Typical depth
12′ or 20′ structural spans
Typical area
288 – 400 sq. ft.
Setback tier
Habitable — matches the main house

Standard layouts

12×24 Master Suite Bump-Out

12′ × 24′ · 288 sq. ft.

Bedroom, full bath, and a private entry off the side yard. A single 12-foot span keeps framing efficient and roof tie-ins simple.

20×20 Deluxe Garage Conversion

20′ × 20′ · 400 sq. ft.

Converts an attached garage into a studio suite with kitchenette, full bath, and a new exterior door and window package.

Semi-custom, not rigid

An attached suite has to snap to a house that already exists, so we do not sell a fixed floor plan. We sell signature structural blocks — proven spans and roof forms that we then fit to your walls, windows, and grade.

Starting from a standard 12-foot or 20-foot depth saves thousands in custom structural engineering, keeps framing efficient, and moves faster through municipal plan review because reviewers have seen the assembly before.

  • Standard spans mean stock engineering, not a clean-sheet structural package
  • Roofline, siding, soffit, and trim are matched to the existing house
  • Interior finishes and the kitchenette layout stay fully yours to choose

Why Tampa Bay homeowners choose attached

In the high-density areas of Pinellas County and inside strictly managed HOAs, a detached structure is often simply not permittable — lot coverage, separation requirements, or covenants rule it out. An attached suite is frequently the only legal way to add livable square footage.

It also keeps utilities short. You are extending existing water, sewer, and electrical service rather than trenching a new lateral run across the yard, which is where detached budgets tend to grow.

What the range includes

  • Structural engineering from a standard span
  • Foundation, framing, roof tie-in, and dry-in
  • Electrical, plumbing, and HVAC extension
  • Full bath, kitchenette rough-in, and standard finish package
  • Permitting and inspections through your jurisdiction

Estimated separately

  • Roof replacement or structural repairs to the existing home
  • Electrical service panel upgrades
  • Impact windows beyond the new opening count
  • Driveway, walkway, and hardscape connections

Features most often added

Added inside the same design and permit set — never as a second project with a second contractor.

  • Pergola12′ × 16$11k–$16k
  • Summer Kitchen6′ × 14$18k–$42k
  • Fire Feature6′ × 6$6.0k–$15k

Placeholder planning ranges for budgeting only — not a quote. Final pricing depends on site conditions, utility runs, finishes, and permitting.

Next step

Check whether the suite fits inside your buildable envelope.

Check my property