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  • Verified reviews icon30
    Verified custom home building reviews

Top-Rated Custom home builders in Key Biscayne - Updated Nov 2026

Avatar for Superb Home Remodeling LLC
Superb Home Remodeling LLC
4.1(
68
)
Find a Custom Home Builder

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: Quick response

"Hired Superb LLC to remove three thru the wall air conditioners, brick up opening on exterior and drywall interior opening. The interior drywall installation was very good. The brick installation on exterior wall was amateurish at best."
GYM ASSEMBLY
Home Gym Assembled in the Basement
One more Home Gym Assembly project for our extreme
Really Professional Treadmill for Marathon Runner
Pro-Form Treadmill

+80

Response time1 day
17 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Coastal Improvement Corporation
Coastal Improvement Corporation
5.0(
9
)
Find a Custom Home Builder

Serving Key Biscayne, FL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Our Services: As a Certified General Contractor (CGC), we provide full-service construction solutions ranging from residential projects to large-scale commercial, infrastructure, and municipal developments. Our expertise includes ground-up construction, renovation, and design-build services. \n

INTERIOR PROJECTS
INTERIOR PROJECTS
INTERIOR PROJECTS
INTERIOR PROJECTS
INTERIOR PROJECTS

+235

9 neighbors recently requested a quote
A Squared Builders, LLC
5.0(
4
)
Find a Custom Home Builder

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"A Squared Builders did an amazing job on our custom home! From start to finish they made the process easy and stress-free. Great communication, honest, and the quality of the work is top notch. We couldn’t be happier with how our home turned out and would recommend them to anyone looking for a builder you can really trust."
Custom home
Custom home
Custom home
Custom home
Response time12 hrs
1 neighbors recently requested a quote
Avatar for Golden temple Builders Inc
Golden temple Builders Inc
4.6(
9
)
Find a Custom Home Builder

Serving Key Biscayne, FL and surrounding areas

In business since 2003

Free estimates

Warranties offered

"Very Happy with choosing Golden Temple Builders for my construction needs. Nick the owner was very professional and clearly explained the stages of the project and was able to work with the pricing points that I could commit to. His team went above and beyond my expectations, and job was completed even well before promised. Would Highly Recommend!!!! 10/10"
3rd story attic turned into gym.
Addition
Staircases
Kitchens
Building new homes

+112

Response time5 days
Response rate100%
Recommended by88%of homeowners
Avatar for Rightway Construction Miami
Rightway Construction Miami
5.0(
7
)
Find a Custom Home Builder

Serving Key Biscayne, FL and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"I don’t usually leave reviews but I had to write one for Rightway Construction. Great prices and even better customer service. They did our master bathroom and completely remodel our floors. We couldn’t be happier. I will re-hire them in a heart beat."
Additional Photos
Additional Photos
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Additional Photos
Additional Photos

+21

Recommended by100%of homeowners
Avatar for Wolfe Construction Group
Wolfe Construction Group
4.0(
74
)
Find a Custom Home Builder

Serving Key Biscayne, FL and surrounding areas

In business since 2004

Free estimates

Credit card accepted

"Rob took my call and provided helpful information i needed for my home i just purchased. Although there was nothing for him to do for me, he was happy to share his knowledge with me and give me his opinion.  I would call Rob again in the future if i require his services."
Additional Photos
bedroom remodel
Commercial painting project
Recommended by84%of homeowners
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Custom Home Builders FAQs, answered by experts

A contractor can install your shipping container home in as little as 90 days. This is notably quick compared to a traditional home build, which can take more than a year (providing there aren’t permitting or construction delays that make the wait even longer). For the quickest installation, choose a prefab container home.

Most cottages are around 1,000 square feet, making them smaller than most other styles. However, cottages are defined more by their decor and architectural focus on simplicity, functionality, and a connection to nature than they are by a rigid square footage or floor plan. While cottages are defined more by their charm and appearance than size, the smaller footprint does help maximize the comfort and charm, and it keeps the focus on connection to nature and family.

The average cost to renovate or remodel a home is $52,300, with most projects ranging from $19,500 to over $88,400. However, costs can vary significantly, from as low as $3,000 for a small project to $170,000 or more for a complete home remodel.

Several factors influence the total price, including:

  • Project Scope and Size: The extent of the renovations, whether it's a single room or the entire house.

  • Location: Geographic location affects labor and material costs.

  • Materials: The quality of materials chosen.

  • Room Type: Kitchen remodels ($14,500 - $70,000+) are generally more expensive than bedroom remodels ($1,500 - $5,500).

  • Other Factors: The time of year, complexity of the work, and any additions or expansions.

On a per-square-foot basis, you can expect to pay between $15 and $60 for standard projects and up to $150 for luxury renovations.

Examples of specific project costs include:

  • Basement remodel: ~$20,200

  • Garage remodel: ~$27,900

  • Loft conversion: ~$20,200

  • Disability accommodation remodel: ~$4,300

  • Major home repairs: ~$11,700

If you are financing the project, note that some loan programs, like the FHA 203(k), may require a minimum project cost (e.g., $5,000) and will necessitate a home appraisal and professional cost estimates. Using a home renovation cost estimator can also help you budget for your project.

It usually takes around four to six months to build and install a modular home, although your timeline could go up to around eight months if there are delays in the manufacturing or permitting process. Heavy site preparation and foundation pouring can extend that timeline if you need them, as can customizations you want for your modular home. Your modular home company should be able to provide an estimate for the construction timeline before you sign any contracts or agree to any work.

The most significant expense when building a barndominium is constructing the metal shell, which includes the roof, doors, and windows. Additional exterior components impacting the overall cost include metal siding and the concrete foundation.

The Key Biscayne, FL homeowners’ guide to custom home building

From average costs to expert advice, get all the answers you need to get your job done.