General contracting built for Belvedere's islands and design review
Design-build general contracting for Belvedere homes, with one team handling design and construction, priced options up front, and photoreal 3D renderings before any permit is pulled. Belvedere is one of the most demanding places in Marin County to build well. The town is barely a square mile spread across Belvedere Island, Corinthian Island, the Belvedere Lagoon, and the Beach Road condominiums, and almost nothing here is a simple, flat lot. You are working on steep island grades with protected bay views, on narrow waterfront lagoon parcels where the water is part of the property line, and inside an architectural fabric that runs from Victorian and Mediterranean estates to the post-and-beam mid-century modern homes the area is known for. A contractor who treats Belvedere like any other Marin town runs into trouble fast.
New Key Construction is a Bay Area design-build firm, so the people who design your project and the people who build it sit at the same table from the first walkthrough. For a Belvedere remodel, addition, or renovation, that single-team structure is the difference between a clean process and a year of finger-pointing between an architect, a separate builder, and the City of Belvedere.
Belvedere design review comes before your permit, so we design for it
Belvedere has unusually strict planning rules because the community protects its views, mature trees, and quiet residential character. In most of Belvedere, no building permit is issued for exterior alterations, additions, grading, or significant landscape changes until the site plan, architectural plans, and landscape plan have gone through Design Review and earned approval from the Planning Commission, or the City Council on appeal. Many exterior changes trigger Design Review even when the project would not otherwise need a permit at all.
This is where our process earns its keep. Before any permit is pulled, we produce photoreal 3D renderings of the proposed work so you can see the actual massing, rooflines, window placement, and finishes against your real house and Belvedere lot. Those renderings let you make confident decisions early, and they give the Planning Commission and your neighbors a clear, honest picture of what is being proposed, which makes the view and privacy conversation far more productive. We design from the start to respect protected views, tree preservation, height and setback limits, and the City's objective design standards, rather than discovering the constraints later.
One team, priced options, white-glove management
Most luxury Belvedere projects feel stressful because of fragmentation. The homeowner hires a designer, then an architect, then a contractor, and watches the budget drift as each party blames the others. We collapse that into one team that carries your project from concept and design through Belvedere Design Review and inspection to the final walkthrough.
Before you commit, we put priced options in front of you so the budget is a set of clear choices, not a moving target with surprises at the end. On Belvedere's tight island and lagoon sites, build logistics matter as much as design. Staging materials on a narrow island street, coordinating deliveries across the causeways from the Tiburon Peninsula, and protecting a lagoon bulkhead all take real planning. Our white-glove project management handles that so your household and neighbors feel as little disruption as possible, with one point of accountability throughout.
Whether it is a renovation of a mid-century modern home above the bay, a remodel on a Corinthian Island lot, an addition on the Lagoon, or a restoration of an older Belvedere Island estate, we bring design and construction under one roof so the result matches what you were promised.
Frequently Asked Questions
Do I need Design Review for a remodel in Belvedere?
Most likely, yes, if the work touches the exterior. In Belvedere, exterior alterations, additions, site grading, and significant landscape changes generally cannot get a building permit until the site, architectural, and landscape plans are approved through Design Review by the Planning Commission. Even some projects too small to need a building permit still require Design Review, so we plan for it from day one.
How long does a Belvedere general contracting project take?
The construction window depends on scope, but budget meaningful time up front for design and the City's Design Review and permitting before any work begins. A kitchen or bath remodel is shorter, while a major addition or renovation on an island or lagoon lot takes longer because of review, site access, and staging. We give you a realistic schedule with the approval timeline built in, not just the building phase.
Why does design-build help on Belvedere's difficult lots?
Belvedere's steep island grades, protected views, tight setbacks, and waterfront lagoon parcels leave little room for error. With design-build, the same team designs around those constraints and then builds what it drew, so the design is grounded in what can actually be permitted and built here. That avoids the costly redesigns and budget surprises that come from a separate architect and contractor.
Can I see what my project will look like before construction?
Yes. We create photoreal 3D renderings of your project before any permit is pulled, set against your real home and lot. You use them to finalize the design with confidence, and they help present it clearly to the Planning Commission and neighbors during Design Review.
Do you handle both design and construction?
Yes. New Key Construction is a design-build firm, so interior design and construction live under one roof. One team carries your Belvedere project from concept and 3D renderings through Design Review and permitting to final construction, with priced options up front.
Start your Belvedere project
If you are planning a remodel, addition, or renovation in Belvedere, let us show you the path from idea to finished home. We will walk your property, design around your views and your lot, and put priced options and 3D renderings in front of you before any permit is pulled. Reach out to New Key Construction to begin.




