How Long Does an Interior Design Project Take? A Realistic Los Angeles Timeline
“How long is this going to take?” is usually one of the first questions a client asks us after “How much is this going to cost?”
It is also one of the hardest questions to answer with a single number.
A furnishing project might take a few months from design through installation. A kitchen renovation could take several months once design, ordering and construction are considered together. A substantial whole-home renovation may take six months or longer. A ground-up custom home is easily a multi-year process.
The problem is that when people ask how long an interior design project takes, they are often talking about several different timelines at once: the time required to design the project, the time required to order or fabricate materials, the construction schedule, and, in some cases, architecture and permitting.
Those are not the same thing.
So rather than give you one number that is almost guaranteed to be wrong, let’s break down what actually affects an interior design project timeline in Los Angeles and what realistic planning ranges can look like.
First, What Do We Mean by “Project Timeline”?
Before talking about timelines, we have to define what we are timing.
For most renovation and new-construction projects, there are several distinct phases.
There is the design phase, when we measure, plan, draw, source, specify and present the project.
There is the procurement phase, when materials, fixtures, furnishings and custom items are ordered or fabricated.
There is the construction phase, when the contractor and trades actually build the project.
And for some projects, there is also an architecture and permitting phase before meaningful construction can begin (this usually takes place during the design phase).
These phases can overlap, but they should not be confused with one another.
If a contractor tells you a kitchen will take eight weeks to build, that does not mean you should call an interior designer eight weeks before you want the kitchen finished.
The design may need several weeks. Cabinetry may need several more. Plumbing fixtures, lighting, appliances or tile may have lead times. Permitting may be required. The contractor may not be available to start the moment everything is ready.
That is why a project with an eight-week construction schedule can still require months of planning before demolition ever begins.
How Long Does the Interior Design Process Take?
The design portion itself varies enormously based on scope, complexity and the scale of the custom work involved.
For a relatively straightforward bathroom, I typically like approximately three to four weeks for design.
For a kitchen, approximately three to five weeks can be realistic.
For a kitchen plus several bathrooms, I generally want at least six to eight weeks, and I would much rather tell a client eight weeks and deliver early than promise six and immediately put the entire team under unnecessary pressure.
For a substantial whole-home renovation, approximately eight to twelve weeks or more is often much more comfortable.
Ground-up custom homes are an entirely different category. For the hard-surface and architectural interior design alone, I may want approximately four to six months. If furnishings and décor are also part of the scope, the design process may extend to six, eight or even ten months, although that timeframe is usually broken up in different intervals. Particularly because we often design the architectural interiors first and move into furnishings once that portion is approved.
Could some of these projects be designed faster?
Absolutely.
But faster is not always better.
I would rather build enough time into the schedule to properly develop the design, coordinate with the team, resolve questions internally and present something cohesive than rush through a major project simply because construction is scheduled to begin too soon. After all, isn’t it better to under promise and over deliver?
What Actually Happens During the Design Phase?
One reason clients sometimes underestimate the design timeline is that they only see the finished presentation.
They do not usually see everything required to get there.
Before a presentation, there will likely be field measuring, onboarding, space planning, cabinetry and millwork elevations, lighting plans, plumbing specifications, stone and tile sourcing, flooring, grout colors, paint colors, hardware, door styles, renderings, samples, pricing, quoting and coordination with the architect or contractor.
For us, some of the most time-intensive parts of the process are often sourcing, elevations and renderings.
Those are also some of the things that make a project more thoughtfully considered before anyone starts building it.
And that matters, because a contractor cannot accurately price a project based on the concept of “a beautiful bathroom.”
They need to know what is actually being installed.
A Realistic Timeline by Project Type
These are not guarantees or promises. They are planning ranges based on the types of professionally designed residential projects we work on.
Project type | Design planning | Construction / procurement |
Bathroom renovation | ~3–4 weeks | ~6–8 weeks |
Kitchen renovation | ~3–5 weeks | ~8–12 weeks |
Kitchen + multiple bathrooms | ~6–8+ weeks | ~12–16+ weeks |
Substantial multi-room renovation | ~8–12+ weeks | ~3–6 months |
Major whole-home gut renovation | ~8–12+ weeks or more | ~6–12 months+ |
Furnishing project | ~2–4+ weeks | ~10–16 weeks typical procurement/install |
Whole-home furnishings | ~4–6+ weeks design | Varies significantly |
Ground-up custom home | ~4–6+ months for interior design | 2+ years overall can be realistic |
The important thing is not just the number. It is what we mean by the project.
A substantial renovation may include a kitchen, several bathrooms, flooring, lighting, paint, cabinetry and other interior upgrades without completely rebuilding every component of the house.
A true gut renovation is something else entirely.
Those projects may involve complete demolition, moving walls, replacing windows and doors, major electrical and plumbing changes, structural work, extensive new millwork and a much larger construction scope.
Naturally, the second project takes longer.
I have worked on a gut-renovated condominium where all of the bathrooms and flooring were replaced, but the kitchen remained largely intact other than refinishing cabinetry, adding a backsplash, updating hardware and replacing some appliances. That is very different from gutting a house down to the framing and rebuilding virtually every interior system.
So, when someone tells you their “whole-home renovation” took four months or eighteen months, the first question should be: what did they actually renovate?
How Long Does a Bathroom Renovation Take?
For a normal, not overly complicated bathroom, approximately six to eight weeks of active construction can be a reasonable planning range.
That assumes the design has already been completed and necessary materials are available.
A bathroom can take less time, particularly if the layout remains unchanged and everything is pretty straightforward.
It can also take considerably longer if plumbing is being relocated, there is extensive custom stone, specialty tile work, custom cabinetry, delays in shower glass or the contractor's schedule becomes disrupted.
There is a tremendous difference between replacing finishes within an existing layout and fundamentally rebuilding how a bathroom works.
How Long Does a Kitchen Renovation Take?
For a typical professionally executed kitchen renovation, approximately eight to twelve weeks of active construction is a reasonable place to begin the conversation.
Again, that is construction time, not the total time from your first design meeting until you are cooking dinner in the completed kitchen.
Custom cabinetry can dramatically affect the schedule.
Appliances may have long lead times.
Stone cannot be templated until cabinetry is installed.
Backsplash tile will not go in until countertops are complete.
Plumbing and electrical work must happen in the proper sequence.
Everything depends on everything else. It is a domino effect.
That is why I am much more interested in the project being properly sequenced than in someone promising me an impressively short completion date.
How Long Does a Whole-Home Renovation Take?
This is where broad internet ranges become troublesome because “whole-home renovation” can mean practically anything.
A substantial interior renovation touching multiple spaces may take approximately three to six months of active construction, depending on the size of the house, how many rooms are being worked on and how much is actually changing.
A true whole-home gut renovation can easily take six to twelve months or longer.
If there is an addition, structural work, major window and door replacement, extensive custom millwork or complicated permitting, the schedule can grow further.
The best way to think about it is not “How long does a 3,000-square-foot house take?”
It is:
How much are we actually changing inside that 3,000-square-foot house?
Can Construction Start Before the Design Is Finished?
For a renovation, my answer is pretty unequivocal:
No.
Before construction begins, the design should be sufficiently complete for the contractor to understand exactly what is
expected and accurately price the work.
Finish materials themselves can change labor costs dramatically.
Installing individual 1-by-1 tiles is not the same labor equation as installing larger sheets or 12-by-12 tiles.
Creating a flush tile condition with additional drywall detailing is not the same as using a conventional edge.
Moving plumbing is different from leaving it where it is.
Demolishing everything first and figuring out the design later can also create expensive problems if you discover afterward that something should have remained in place.
That is why I want a renovation designed and approved before demolition begins. We need time to create a pricing set so everyone has a much clearer understanding of what is actually being built and what it may cost.
Ground-up construction has a little more flexibility.
If a house is being graded, foundations are being poured and framing is only beginning, the interior team still has runway before certain finish decisions are needed.
But even then, the goal should be to stay well ahead of construction, not race it.
When Should You Hire an Interior Designer?
For most significant projects, I personally think getting an interior designer to be involved before the contractor is hired is ideal and even preferred.
If an architect is involved, hiring the interior designer concurrently with the architect, or shortly thereafter, can make the process much more cohesive.
Without a completed design, a contractor can give you rough pricing based on general assumptions, but they cannot price every detail accurately because they do not know exactly what is being installed.
The earlier the designer is involved, the more opportunity there is to help shape the project before drawings, layouts and construction decisions become difficult or expensive to change.
We will talk about that much more in another article, but from a timeline standpoint, early involvement almost always gives the entire team more breathing room.
What About Permits in Los Angeles?
Permitting is one of the biggest variables in any Los Angeles project, and honestly probably one of the biggest variables no matter where you are.
But even here, it is important to distinguish the type of permit.
A basic remove-and-replace permit can sometimes be obtained essentially over the counter.
That is the type of project where everything is generally staying where it already is and we are simply replacing it with something better.
No moving walls. No meaningful relocation of plumbing. No addition. No major change to the existing layout.
Those projects can be relatively simple from a permitting standpoint.
Once you begin moving or adding things, changing structure, expanding the house or dealing with special site conditions, the conversation changes dramatically.
I have had a renovation and addition where permitting took around nine months.
I have also worked on a project where the homeowner spent approximately five years navigating approvals before the project could even actually move forward with beginning construction because of the property's district, hillside requirements and other complexities. That is an extreme example, not a normal timeline, but it illustrates how dramatically permitting can affect a project.
One useful thing about a longer permitting period is that it can give the interior design team time to work, which can sometimes be a silver lining in an otherwise horrific situation.
Instead of waiting nine months and then beginning the interiors, that can be an ideal period to develop the design, prepare drawings, source materials and make decisions so that once permits are approved, the project is ready to move full steam ahead.
How Long Do Furnishings Take?
For most furnishing projects, I like to tell clients approximately ten to twelve weeks at minimum from time of approvals, and I am more comfortable with twelve to sixteen weeks.
If everything we select happens to be in stock, the project can sometimes move considerably faster, perhaps four to eight weeks.
But I would never usually promise that.
Inventory changes.
Items sell out.
Freight gets delayed.
Something arrives damaged.
One piece may be ready while another is still in production.
Custom furniture adds another layer of timing.
Local custom vendors may be around eight to twelve weeks. Out-of-state custom work may be ten to fourteen weeks or more. A highly customized rug can be twenty to twenty-six weeks or even longer, depending on size, construction and complexity. We once designed a bespoke hand knotted rug that took around nine months to ship to our warehouse, again this is on the longer end, but not unheard of for bespoke rugs.
The installation date is therefore often determined by the slowest item, not the fastest one.
What About Cabinetry, Stone and Other Custom Materials?
Custom materials can quietly become some of the biggest schedule drivers.
Depending on the vendor, cabinetry may take anywhere from roughly four to twenty weeks.
Stone fabrication may take approximately two to three weeks once field measurements can be taken.
Shower glass may take approximately two to three weeks.
Custom doors and millwork may be around eight weeks, though highly customized work can take longer.
And imported plumbing or specialty products that are not stocked or produced domestically can absolutely destroy an otherwise beautiful construction schedule if they are selected too late.
This is why designers and contractors become so obsessed with the phrase long-lead item.
We are not trying to ruin your day.
We are trying to prevent a faucet from holding up your bathroom for six weeks.
Who Has the Most Control Over the Timeline?
No single person controls the entire project timeline.
The designer influences it through planning, documentation, selections and timely communication.
The client influences it through approvals, budget decisions, revisions and payments.
The contractor influences it through labor scheduling, sequencing and communication.
And then there are vendors, inspectors, architects, engineers and government agencies.
In my experience, once client approvals are handled, the contractor becomes one of the biggest variables, and not necessarily because of the contractor themselves.
If one subcontractor does not show up at the proper time, the next trade may not be able to work.
Then that trade takes another job.
Now the first issue gets resolved, but the next person is unavailable.
A delay of a few days can turn into a delay of several weeks.
Contractors can make or break a timeline simply by how well they sequence and communicate the work.
What Usually Causes Delays?
The most common culprits I have encountered are permitting, backorders, contractor scheduling and delayed decisions.
Permits can delay the start of a project.
Inspections can temporarily stop work.
Backordered components can hold up installations.
Contractor sequencing can create domino effects.
And client indecision can become a meaningful factor when approvals or revisions continue to shift.
The majority of our clients are actually quite responsive, and make decisions incredibly quickly. When there is trust and the design is right, approvals often happen almost immediately after the presentation.
That is one reason aligning on budget and aesthetic direction early is so important.
How Much Extra Time Should You Plan For?
I am personally much more conservative with timeline promises than best-case construction schedules because I have seen it all.
If a contractor tells me six to eight weeks, I would mentally be prepared for something closer to ten to twelve.
That is, by no means, because contractors are wrong, slow, or disorganized.
It is because renovation work involves existing buildings, existing conditions, inspections, trades, materials and a hundred moving parts and people that no one can control perfectly.
I tend to give renovation schedules significant breathing room rather than schedule life around the theoretical best-case completion date because otherwise you are setting yourself up for heartache, in my opinion.
If you must be moved into your house by June 1, I would not want the contractor's projected completion date to be May 31.
That is not a schedule.
That is literally a prayer.
How Long Does a Ground-Up Custom Home Take?
For a ground-up custom home, two years or more from the time permits are issued through completion can be completely realistic and reasonable.
Highly customized projects may take longer.
Very large, complicated or difficult sites can take significantly longer.
I have worked on one custom house that took approximately four years from architecture and permitting through completion, with roughly three years of active building. Since we were involved while architecture and permitting were underway, we had an enormous amount of time to properly develop the interiors before construction needed those decisions.
That was actually a dream scenario from a design standpoint.
Another house had drawings beginning years before completion and construction eventually stretched much longer than it reasonably should have because of delays in decision-making and inconsistent contractor scheduling.
That house was not enormous. It was not sitting on some impossible hillside. It simply lost time.
The lesson is important:
A long project is not automatically a badly managed project, and a fast project is not automatically a well-managed one.
The real question is whether the right decisions are being made early enough to keep the next phase moving.
How Can You Keep an Interior Design Project on Schedule?
The strongest protection against unnecessary delays is preparation.
Hire the right team early.
Be aligned on your budget.
Be aligned on the direction of the design.
Complete the renovation design before demolition.
Make long-lead selections early.
Hire a contractor who communicates well and establishes realistic milestones before construction begins.
And when decisions need to be made, make them.
None of those things can guarantee that nothing unexpected will happen.
Something unexpected usually will.
But there is an enormous difference between a project that encounters a problem inside a well-organized process and a project that was disorganized before the problem ever appeared.
Good Design Takes Time. Good Work Takes Time.
This is probably the biggest thing I would want anyone to understand that is embarking on a home project.
Good design takes time. Good work takes time.
That does not mean inefficiency or inadequacy should be tolerated.
A good team should communicate. The project should continue moving. People should show up when they say they will. Everyone should understand the milestones and what has to happen next.
But the person obsessed with getting the work right may take longer than the person obsessed with getting off the job as quickly as possible.
If a project takes six months instead of four because additional time was required to properly execute details, resolve an unforeseen condition or wait for the right material, I would rather have the six-month project and the better result.
Renovating, furnishing or building a home requires patience.
The goal is not to make the process take forever.
The goal is to give the design, the materials, and the people building it enough time to do their best work.
Because years after the project is complete, you are unlikely to care whether the tile took an extra week to install.
However, you are going to care whether it was installed beautifully and correctly.
Planning a Renovation, New Build or Furnishing Project?
If you're considering a renovation, custom home or furnishing project in Los Angeles or beyond, the best time to begin the conversation is usually earlier than you think.
At Ethan Charles Design, we work with our clients from the early planning and design stages through procurement, construction and installation to help create homes that are as thoughtfully executed as they are beautiful.
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