A room addition in Broward County takes 10–16 weeks of design + permitting before construction starts. You'll need: architectural drawings, structural engineering, HOA approval (if applicable), building permit, and depending on scope: electrical, plumbing, mechanical, and roofing sub-permits. Total addition cost runs $325–$525/sqft for typical scope, $475–$725/sqft for primary-suite quality. Plan 8–12 months from first call to certificate of occupancy.
Room additions are one of the most rewarding renovations you can do — and one of the most paperwork-heavy. Broward County's process is well-documented but unforgiving: every "skip this step" story we hear ends with a stop-work order and weeks of delay.
Here's the honest playbook, step by step.
Step 1: Feasibility (Week 1–2)
Before you spend a dollar on design, check three things:
- Lot coverage limits — Broward and your city have maximum building coverage. Single-family zones typically allow 35–45% lot coverage. Your existing structure already uses some of that allowance.
- Setback requirements — every property has minimum distances from front, side, and rear property lines. Additions can't cross those lines without a variance (very rare, expensive).
- HOA / deed restrictions — many Broward neighborhoods have architectural review boards. They can reject designs even if Broward would approve them.
A good contractor or architect will pull your property card from the Broward Property Appraiser's site and run the math in 30 minutes before you sign anything.
Step 2: Design Development (Week 2–6)
Once feasibility is confirmed, design starts. For a typical 400–800 sqft addition:
- Site plan — shows existing house, new addition footprint, setbacks, lot coverage math.
- Floor plan — interior layout of new space and how it ties to existing rooms.
- Elevations — exterior views from all four sides, showing how the addition matches your existing house.
- Roof plan — pitch, tie-in detail, gutter and downspout locations.
- 3D renderings — increasingly standard. Let you see the addition before it's built.
Design fee for a typical addition: $4,500–$12,000 depending on size and complexity. We credit this back when you sign the build contract.
Step 3: Structural Engineering (Week 6–8)
Florida code requires stamped structural drawings for any addition that touches the building envelope. A licensed structural engineer reviews:
- Foundation design (footings, slab, frost line — though Florida has no frost concerns)
- Wall framing and headers
- Roof structure including hurricane tie-downs (Simpson Strong-Tie or equivalent)
- Load path from roof to foundation
- Connection to existing structure
Engineering fee: $1,800–$4,500 for typical additions. Required on every Broward addition — there's no skipping this.
Step 4: HOA Submission (Week 6–10, in parallel)
If your home is in an HOA-governed community (St. Andrews, Boca West, Woodfield, almost any gated neighborhood), you'll submit an Architectural Review Board (ARB) package before going to the building department.
The package typically includes:
- Site plan + floor plan + elevations
- Materials specifications (roof, paint colors, windows)
- 3D renderings (some HOAs require these)
- ARB fee ($100–$800)
- Application form, signed by all listed homeowners
ARB review timelines vary wildly — some HOAs review monthly, some quarterly. Plan 4–8 weeks. Some ARBs require in-person presentation; we typically attend on your behalf.
Step 5: Building Permit Submission (Week 8–12)
Once design and engineering are complete (and HOA-approved if applicable), the permit package is submitted to your local building department. In Broward, that's either:
- The incorporated city (Fort Lauderdale, Pompano, Hollywood, Coral Springs, etc.) — most homes
- The Broward County building department — unincorporated areas only
The package contains:
- Building permit application
- Stamped architectural and structural drawings
- Energy code compliance forms (Florida Building Code Energy)
- Wind load calculations
- Site plan with elevations and setbacks
- Notice of Commencement (recorded at the County Clerk)
- Permit fees (typically 1–2% of project value)
Step 6: Review & Revisions (Week 10–16)
Plans go through multiple plan-reviewer eyes: structural, electrical, plumbing, mechanical (HVAC), and zoning. Each reviewer can issue comments requiring revisions.
Common revision requests:
- Window U-factor doesn't meet energy code — change spec
- Beam size insufficient — engineering re-calc
- Setback measurement disputed — survey clarification
- Roof tie-down detail unclear — re-draw
Each round of revisions adds 2–3 weeks. A clean package goes through in 4–6 weeks. A package with multiple revision rounds can take 12+ weeks.
Step 7: Permit Issued, Construction Starts (Week 14–18)
Once the permit is approved and issued, construction can begin. Typical addition timeline on-site:
- Demolition + excavation: 1–2 weeks
- Foundation: 2–3 weeks (with inspection)
- Framing + roof: 3–5 weeks (with rough framing inspection)
- Dried-in: roofing, windows, doors installed — 1–2 weeks
- Rough-in: electrical, plumbing, HVAC (with inspections each)
- Insulation: 1 week (with inspection)
- Drywall + trim: 3–4 weeks
- Finishes: floors, paint, fixtures, cabinetry — 3–5 weeks
- Final inspections + CO: 1–2 weeks
Total on-site: 16–22 weeks for a typical 600 sqft addition.
What It Actually Costs
Real numbers for Broward additions in 2026:
- Basic addition (sunroom, screened room, simple bonus room): $275–$375/sqft
- Standard addition (bedroom + bath, family room): $325–$475/sqft
- Premium addition (primary suite, custom finishes): $475–$725/sqft
- Second-story addition (most expensive): $475–$725/sqft + $30–80K in structural reinforcement
Numbers include design, engineering, permits, construction, all finishes, and HOA submission fees.
Tell your homeowner's insurance carrier before construction starts. Many policies require a builder's risk policy during construction and you'll need to update square footage and replacement value after CO.
What Can Go Wrong
The three most common problems we see (and how to avoid them):
- Underestimating HOA timeline. Some HOAs only meet quarterly. Submit early. Don't sign a contract that assumes 4-week HOA approval if your HOA is "the slow one."
- Owner-supplied materials. If you supply the windows or appliances directly, you're responsible if they arrive damaged or wrong. Most contractors won't warranty around owner-supplied materials. Either accept that risk or buy through your contractor's account.
- Tying into the existing house. Older homes (especially pre-1980) often have undersized electrical panels, marginal HVAC, or roofs that don't accommodate a clean tie-in. Plan and budget for the addition to also upgrade these where needed.
Ready to Plan Your Addition?
We've completed 60+ Broward and Palm Beach additions. We handle design, engineering, permitting, HOA submission, and construction in-house — one contract, one timeline, one warranty. Book your free in-home consultation to start the conversation.
