Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across North Miami Beach
A typical home addition in North Miami Beach runs $53,100-$153,400, while ADU construction ranges from $106,200-$259,600. Every project must meet Miami-Dade High Velocity Hurricane Zone standards, which means Miami-Dade Notice of Acceptance product approvals, wind-load engineering, and inspection sequences that out-of-town crews often miss. Our Home Additions & ADU team coordinates dispatch from our South Florida office and serves North Miami Beach directly, with crews who know the local permit offices, the NOA database, and the limestone-and-water-table conditions that shape excavation here.
Call (786) 321-4970 to schedule your free estimate. We deliver a written price before any work starts, every time, under Clause 1 of The Haven Standard.
Why Rowan Construction Group Miami Is North Miami Beach’s Preferred Home Additions & ADU Company
We’ve delivered 4,000-plus projects since 2007, every one with a written price before work started and a documented photo record when the crew left. In North Miami Beach, that discipline matters more than most places. The city’s 1950s-1970s concrete block structure housing stock, flat built-up roofs, and original jalousie windows mean most additions aren’t clean builds - they’re gut renovations that uncover deteriorated tie-beams, undersized roof-to-wall connections, and electrical panels that fall short of current HVHZ standards. We find these conditions, photograph them, and write the fix into the scope before we cut anything.
Our crews are background-checked and uniformed. A live person answers calls 24/7. And our 365-Day Done Right Promise is printed on every page, backed by a terms page, not an asterisk. If it’s not done right, we make it right.
We also offer a Free Second Opinion on any written estimate - bring a competitor’s quote and we’ll review it line by line at no charge. That’s how we show our work before we ever show up.
Our Home Additions & ADU Services in North Miami Beach
Garage Conversion ADU
A garage conversion ADU in North Miami Beach typically costs $35,400-$94,400. Most residential garages here are 1960s CBS construction with no continuous load path and original jalousie openings set in undersized frames. Converting one means cutting the slab for underground plumbing, which in North Miami Beach often means hitting oolitic limestone within 18 inches and standing water ten feet away. We price the excavation reality, not the fantasy. Our quote includes flowable fill or dewatering if the trench conditions demand it, plus NOA-listed impact sliders and a Miami-Dade-approved roof-to-wall connection system that passes inspection the first time.
New Detached ADU
New detached ADU construction in North Miami Beach runs $106,200-$259,600. These builds face the full HVHZ compliance path: wind-load engineering, NOA-numbered structural products, and inspection sequences that check the load path from foundation to ridge. The shallow water table and limestone substrate mean foundation work here behaves unlike nearly any other US market - pier depths, drainage design, and utility trenching all require local sequencing experience. We pull permits, coordinate inspections, and document every NOA number so your insurance carrier can verify compliance for wind mitigation discounts.
Second Story Additions
Second story additions in North Miami Beach start around the lower end of our $53,100-$153,400 home addition range and climb from there depending on structural reinforcement needs. The existing 1950s-1970s CBS tie-beams in this city are commonly deteriorated and undersized under current uplift requirements. We don’t assume the existing structure will carry the load - we inspect, photograph, and engineer the connection before we quote. That means no surprise change orders when the inspector finds a gap in the load path.
Junior ADU & Interior Conversion
Junior ADUs and interior conversions in North Miami Beach work within the existing envelope, but they still trigger HVHZ compliance for any new window, door, or structural modification. Converting a portion of a 1960s ranch near Keystone Point or a ground-floor unit off Biscayne Boulevard means dealing with aging electrical panels, original jalousie windows, and flat roofs that may need full replacement to meet current code. We price the full scope, including the permits and inspections, not just the finish work.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in North Miami Beach
We source across fifty-plus vetted brands so our written quotes carry honest numbers rather than inflated ones. For roofing assemblies on additions and ADUs in North Miami Beach, we specify GAF and Owens Corning products that carry Miami-Dade NOA numbers, not just Florida Product Approval stickers. For windows and doors, we use NOA-listed impact-rated units that inspectors can verify in the county database. We don’t show up with products that fail at the first inspection review. Our relationships with these suppliers mean we stock local inventory for faster turnaround on standard items, and we know which SKUs carry current NOA status so your project doesn’t stall waiting for compliant replacements.
Common Home Additions & ADU Problems We See in North Miami Beach Homes
- Out-of-town crews with Florida Product Approval but no Miami-Dade NOA. A contractor from Orlando or Tampa installing windows in North Miami Beach with only a state approval sticker will fail inspection. Miami-Dade maintains its own tested-product database, and inspectors here check the NOA number first. We see projects stall for weeks while non-compliant assemblies are re-ordered and re-inspected.
- Additions designed without continuous load path engineering. New roof framing tied into a 1950s CBS tie-beam that has deteriorated or was never sized for current HVHZ uplift requirements. We inspect and engineer the connection before we quote, so the inspection passes and the structure holds.
- Excavation priced for dirt, not limestone and water. The Miami oolitic limestone and shallow water table mean trenching on the same block can require dewatering, rock removal, or both. Cheap quotes leave this out; we include it based on site-specific conditions.
- Scopes that omit wind-load engineering and inspection coordination. A compliant addition or ADU quote in North Miami Beach must include the engineering stamp, the NOA documentation, and the permit-and-inspection sequence. Cheap quotes look complete until the first failed inspection reveals what’s missing.
Pricing for Home Additions & ADU in North Miami Beach, FL
Here’s what home additions and ADU work costs in the North Miami Beach market. These are flat-price ranges with written scope, not estimates that shift once work starts.
| Service | Price Range in North Miami Beach |
|---|---|
| Home Addition | $53,100 - $153,400 |
| ADU Construction | $106,200 - $259,600 |
| Garage Conversion | $35,400 - $94,400 |
What moves a project within these ranges: foundation conditions (limestone and water table issues), structural reinforcement needs for older CBS construction, HVHZ engineering and NOA product costs, and finish material selections. Every quote we deliver is a flat written price with a written scope and a written warranty. No change proceeds without a signed change order. That’s the discipline that has kept our projects within a few percent of the agreed cost across 4,000-plus jobs.
Call (786) 321-4970 for an exact quote - estimates are free, and we deliver the written price before any work starts.
We Also Serve Cities Near North Miami Beach
Our crews work throughout the metro area. We regularly build additions and ADUs in North Miami Beach and nearby Miami Gardens, Hialeah, Miami, and Miami Beach. Each city has its own permit office and inspection rhythm; our team knows the differences and sequences accordingly.
Serving North Miami Beach, FL - Our Local Coverage Area
We’re based in the North Miami Beach area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Home Additions & ADU in North Miami Beach
You need a Miami-Dade Notice of Acceptance. Florida Product Approval alone will fail inspection in North Miami Beach. Miami-Dade County maintains its own product-approval database for its High Velocity Hurricane Zone, and inspectors check the NOA number before anything else. We specify only NOA-listed impact-rated windows and doors, and we document the numbers for your permit file and insurance record. Call (786) 321-4970 for an exact quote - estimates are free.
North Miami Beach’s Miami-Dade HVHZ compliance adds engineering, NOA product, and inspection steps that Broward does not require. The county’s stricter wind-resistance standard means every structural product must carry a Miami-Dade NOA, and the 1950s-1970s CBS housing stock here typically needs more structural reinforcement than newer construction across the county line. Plus, excavation in North Miami Beach often hits limestone and water that don’t appear in Broward bids. Call (786) 321-4970 for an exact quote - estimates are free.
Yes, and usually favorably. Documented HVHZ compliance, including NOA product records and passed inspection certificates, credits toward wind mitigation discounts that most North Miami Beach carriers apply. We include the documentation package as standard, not an upgrade, so you have the evidence for your agent. Call (786) 321-4970 for an exact quote - estimates are free.
A proper quote includes permit fees, HVHZ engineering, NOA product specification, and inspection coordination as line items, not afterthoughts. Under Clause 1 of The Haven Standard, our written price covers the full sequence: permit pull, rough inspection, final inspection, and any re-inspection caused by our work. We don’t quote finish work alone and leave the compliance costs hidden. Call (786) 321-4970 for an exact quote - estimates are free.
Yes, with proper sequencing. We schedule exposed structural work outside the peak June-November window when possible, and we maintain contingency plans for weather delays. The key is completing HVHZ engineering and permit approval before hurricane season, so crews can work efficiently when the weather allows. We plan the schedule with you during the estimate phase. Call (786) 321-4970 for an exact quote - estimates are free.
Ready to see what a compliant, fully-documented addition or ADU costs on your North Miami Beach property? Call (786) 321-4970 to schedule your free estimate. We’ll deliver a written price with a written scope before any work starts - that’s Clause 1 of The Haven Standard, and it’s how we’ve kept 4,000-plus projects within a few percent of the agreed number since 2007.
Written by Grant Rowan, Owner at Rowan Construction Group, serving North Miami Beach and the South Florida metro since 2007.