Figures below are planning ranges for Greater Los Angeles, intended to help you build a realistic budget. They are not a quote — every project is priced from its own site, scope, and selections.
Typical ranges by project type
These are planning ranges for permitted, professionally built work in Greater Los Angeles. They assume licensed trades, pulled permits, and finishes in the mid to upper-mid tier.
- Kitchen remodel — $75,000 to $150,000, rising sharply if walls move or the layout changes
- Primary bathroom — $40,000 to $90,000, driven mostly by tile complexity and fixture selection
- Secondary or guest bath — $25,000 to $50,000
- Whole-home cosmetic refresh — $150 to $250 per square foot
- Whole-home gut renovation — $300 to $550 per square foot
- Permitted addition — $500 to $850 per square foot, often exceeding new construction per foot
- ADU or garage conversion — $150,000 to $400,000 depending on whether it is a conversion or built new
Why an addition can cost more per square foot than a new house
It surprises people, but adding 500 square feet to an existing home frequently costs more per square foot than building 3,000 square feet from scratch. There are three reasons.
First, you pay to connect old to new. Matching an existing roofline, tying into an existing foundation, opening a bearing wall, and blending finishes so the addition does not read as an afterthought are all labor-intensive and none of that work exists on a new build.
Second, you lose economies of scale. Mobilizing a framing crew, a roofer, and an electrician costs roughly the same whether they are working on 500 square feet or 5,000. Spread across a small area, that overhead lands hard.
Third, existing systems often need upgrading to carry the new load. An addition can trigger a new electrical panel, an HVAC system resize, or a plumbing upgrade — none of which appear in the addition's square footage but all of which appear in the budget.
Budget more contingency than you would for new construction
Plan 15 to 20 percent contingency on a renovation, compared with 10 to 15 percent on new construction. This is not pessimism; it is arithmetic based on unknowns.
Older Los Angeles housing stock routinely hides knob-and-tube or cloth-sheathed wiring, galvanized supply lines, cast iron drains at the end of their life, undersized or unpermitted framing, dry rot at the sill plate, and asbestos or lead in materials installed before the 1980s. None of these are visible during a walkthrough, and several are legally required to be addressed once discovered.
A contractor who tells you none of this will come up on a 1950s house is guessing. A better sign is a contractor who inspects what is accessible, names the likely unknowns up front, and prices exploratory demolition so you learn the truth before the budget is locked.
Where renovation dollars go furthest
The highest-return renovation work is usually the least glamorous. Correcting drainage, upgrading electrical capacity, replacing failing sewer laterals, insulating and air-sealing, and replacing single-pane windows all improve how the house lives every day and prevent far more expensive damage later.
On the visible side, kitchens and primary baths remain the two rooms that most influence both daily satisfaction and resale. Improving flow — removing a wall to connect a kitchen to a living space, or adding real light to a dark room — tends to change how a house feels more than any single finish upgrade at the same price.
Frequently asked questions
How much does a kitchen remodel cost in Los Angeles?
A permitted mid-range kitchen remodel in Greater Los Angeles typically costs $75,000 to $150,000. Keeping the existing layout holds costs down, while moving plumbing, relocating gas, or removing a bearing wall adds significantly. High-end appliances and custom millwork can push a kitchen well past $200,000.
Why does my addition cost more per square foot than new construction?
Additions carry the cost of connecting new work to old — matching rooflines, tying into existing foundations, opening bearing walls, and blending finishes. They also lose economies of scale, since mobilizing each trade costs nearly the same for 500 square feet as for 5,000. Additions often trigger upgrades to existing electrical, HVAC, or plumbing as well.
How much contingency should I budget for a renovation?
Budget 15 to 20 percent contingency for a renovation, which is higher than the 10 to 15 percent typical for new construction. The difference reflects unknown existing conditions — outdated wiring, failing drain lines, hidden dry rot, or asbestos and lead in older materials — that cannot be confirmed until demolition begins.
Do I need a permit to remodel my home in Los Angeles?
Yes for most meaningful work. Structural changes, additions, electrical and plumbing modifications, window and door alterations, and HVAC changes all require permits in Los Angeles jurisdictions. Purely cosmetic work such as painting or replacing flooring generally does not. Unpermitted work commonly surfaces during resale and can be expensive to legalize retroactively.
Should I remodel in phases or all at once?
Doing related work at once is almost always cheaper per unit of work, because you mobilize each trade once and open walls once. Phasing makes sense when cash flow requires it or when you need to keep part of the home habitable. The most expensive approach is phasing work that touches the same walls or systems twice.
