Campbell has a lot of mid-century ranch homes and older bungalows near downtown with detached rear garages, plus attached garages that have not parked a car in years. The structure is already standing, already has a slab, and already sits within the setbacks. That head start is what makes a garage ADU the least expensive path to a legal second unit on many Campbell properties.
It is not free money, though. What decides the budget is the condition of what is already there.
Turning a garage into a dwelling means bringing a structure built for cars up to the standard required for people. The list is longer than most homeowners expect.
We look at every one of those before quoting, because a garage in good shape and a garage with a failing slab are two completely different projects wearing the same roof.
The old obstacle to garage conversions was replacement parking. Cities routinely required you to rebuild the parking spaces you were converting, which killed projects on small lots. State law removed that requirement in most circumstances, so converting your garage no longer forces you to give up yard for a new parking pad. It is one of the biggest reasons these projects pencil now when they did not a decade ago. Our overview of navigating ADU law covers the shifts worth knowing.
Both convert, and they behave differently. An attached garage conversion shares a wall with the house, so it needs fire separation and sound detailing between the unit and your living space, and it usually has shorter utility runs. A detached rear garage gives the tenant real privacy and a separate entrance well away from your door, which is what most Campbell homeowners want for a rental, but it means trenching utilities out to it.
Neither is automatically better. We look at where your garage sits, how the yard is used, and who the unit is for. More on how we handle each type is on our ADU construction page.
Campbell issues its own planning and building permits through its Community Development Department, separate from San Jose. A garage conversion is a full permitted project, not a cosmetic remodel, and it gets inspected as a dwelling. Doing one without permits is a genuine problem when you go to sell or refinance, and unpermitted conversions are one of the more common issues we get called in to correct.
We handle the drawings, submittal, plan check corrections, and inspections so the unit is legal on paper as well as in practice.
We run these as design build, meaning the people drawing the conversion are the people building it. On a garage ADU that matters more than on new construction, because so much depends on conditions you only find once you open things up. When design and construction sit with the same team, a surprise in the slab becomes a decision rather than a change order fight. Our design build services page explains how the phases fit together.
We are a licensed general contracting company based in San Jose, owner operated by Becir Molabecirovic, serving Campbell and the surrounding Santa Clara County cities. We keep our project count low on purpose.
The only way to know what your conversion costs is to inspect the structure that is already standing. Get in touch with our team and we will walk your Campbell garage and give you a straight assessment.
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