Custom Home Build Timelines in South Florida: Phase by Phase

Why 14–24 Months Is the Honest Range

A production builder putting up tract homes in a pre-approved subdivision can move faster because the design, engineering, and permitting work is already done. A custom build does none of that in advance. Every phase has to be completed and approved before the next one starts. You're also working within South Florida's permit review windows, which are among the longer ones in the country for residential construction.

Phase 1: Pre-Design and Consultation (4–8 Weeks)

Before a line gets drawn, the right information has to be gathered. Lot survey, soil report if not already available, flood zone confirmation, zoning review, and a clear written scope of what the owner wants to build. Skipping this step produces designs that can't be permitted or built within budget. A realistic cost range and timeline estimate also comes out of this phase — both should be in writing before architecture starts.

Phase 2: Design and Engineering (8–16 Weeks)

This is where the project gets built on paper. The architect produces schematic drawings, then design development drawings, then construction documents — the full set that gets submitted for permit. Structural engineering runs parallel, sizing the foundation, beams, and roof framing. MEP engineers design the HVAC system, electrical layout, and plumbing. Energy calculations are run. Product selections start here too — impact windows have to be specified and their NOA numbers included in the permit package. Rushing this phase is where most budget overruns originate. The more decisions that are made and locked down before permit submission, the fewer change orders happen during construction.

Phase 3: Permitting (8–20 Weeks)

This is the biggest wildcard in a South Florida custom build timeline, and it's largely outside anyone's control once the package is in. Plan review timelines in 2025–2026: unincorporated Broward County runs 10–30 business days per review cycle; incorporated Broward cities run 21–25 business days. Miami-Dade averages 4–12 weeks total. Palm Beach County varies the most — unincorporated areas run 10–30 days, but municipalities like Boca Raton run 60–90 days and the Town of Palm Beach commonly takes 4–6 months. Factor in two rounds of review (typical) and your permit timeline in Palm Beach could be 5–8 months. This is not a reason to panic — it's a reason to submit early, submit complete, and respond to comments within 24–48 hours.

Phase 4: Site Work and Foundation (4–8 Weeks)

Once the permit is in hand, the physical work begins. In South Florida, this means clearing the lot, excavation if needed, underground plumbing rough-in, and slab preparation. The foundation inspection has to pass before concrete is poured. On flat, well-drained lots this phase moves quickly. On lots with poor soil bearing capacity, high water tables, or properties requiring fill elevation, it takes longer.

Phase 5: Framing and Rough-In Trades (8–14 Weeks)

Framing (if wood frame construction) or block laying (CBS construction) goes up, followed by roof framing and sheathing. Once the structure is dry, the rough-in trades — electrical, plumbing, HVAC — run their systems through the walls and ceilings before anything gets covered. Each trade has its own inspection. In high-volume permit markets, scheduling inspections takes planning — inspectors can be booked out a week or more. A good GC schedules inspections in advance rather than calling the morning of.

Phase 6: Enclosure and Finishes (12–20 Weeks)

Insulation, drywall, impact window and door installation, exterior stucco or finish, interior finish carpentry, cabinetry installation, tile work, flooring, plumbing fixture setting, electrical trim-out, HVAC equipment setting and commissioning. This phase runs longest and has the most interdependencies between trades. The sequence matters — tile before cabinetry in bathrooms, drywall before trim, trim before painting, painting before flooring.

Phase 7: Final Inspections and CO (4–8 Weeks)

The final phase is a series of departmental inspections — electrical final, plumbing final, mechanical final, building final — followed by the Certificate of Occupancy inspection. In jurisdictions with high permit volumes, the CO inspection can take 2–3 weeks just to schedule. After the CO inspection passes, the owner takes possession. A final punch list walkthrough happens at this stage — any items that don't meet standard get documented and completed before keys change hands.

What Makes Projects Run Long

• Design changes after permit submission: changes during active review can restart the review clock or require a revision submittal, adding 4–8 weeks
• Failed inspections that require corrections before the next phase can proceed
• Material delays, particularly for imported items — specialty tile, custom cabinetry, certain appliance brands — that have long lead times
• Trade scheduling conflicts on owner-driven material upgrades that weren't spec'd in the original bid
• Permit response delays: comments from the building department have to be addressed quickly or the review clock keeps ticking