Bathroom design service: layout, 3D render, and a real plan

Why the design phase is the most important week of a San Diego bath remodel

The single biggest reason bathroom remodels go over budget is that the homeowner and the crew do not share a clear picture of the finished space before demo starts. The design phase is the week where the layout is locked, the fixtures are picked, the finishes are confirmed, and the budget is realistic. A clean design package solves four problems: a layout that uses the footprint, a fixture schedule that does not have to be re-ordered, a finish palette that the homeowner can sign off on, and a written scope that the crew can build from.

The design move that works in almost every San Diego bath remodel is an in-home consult with a measured layout, a 3D render that shows the finished space from two angles, a fixture schedule with make, model, and finish, and a written scope of work that the homeowner signs before the contract. The move that fails in a real remodel is “I’ll know it when I see it,” because the homeowner ends up making finish decisions during the rough-in, and most of those decisions cost money and time.

This is a walk through what a good bathroom design package includes, what it does not include, what the design phase costs in San Diego, and how to compare two design quotes.

What a good bathroom design package includes

A complete design package has six parts. Each one is a separate deliverable, and each one has a cost.

1. A measured in-home consult. A designer comes to the home with a laser measure, photographs the existing bath, and notes the framing, the plumbing rough-in, the electrical panel capacity, the subfloor condition, the vent stack location, and any structural constraints. The consult takes 60-90 minutes, and the homeowner gets a written summary. Cost: $250-$500.

2. A measured layout drawing. A 2D plan view of the proposed bath, drawn to scale, showing fixture locations, tile patterns, glass enclosure, lighting, and accessories. The drawing is the basis for every other design decision and the basis for the crew’s scope of work. Cost: $400-$900.

3. A 3D render. A photorealistic 3D rendering of the proposed bath, viewed from two or three angles, showing fixtures, tile, glass, lighting, and finish palette. A 3D render runs $400-$1,200 per view, and a typical package includes two views.

4. A fixture schedule. A written list of every fixture, fitting, and finish in the bath, with make, model, finish, size, and a hyperlink to the product page. Cost: included in the design package or $300-$600 as a separate deliverable.

5. A finish palette. A presentation board or a digital file showing the tile, the grout, the countertop, the cabinet finish, the plumbing fixture finish, the lighting finish, the paint color, and the accessories. Cost: $300-$700.

6. A written scope of work. A document that translates the design into a buildable scope, with line items for demo, plumbing, electrical, tile, glass, vanity, fixtures, paint, and permits. Cost: included in the design package or $400-$800 as a separate deliverable.

The bathroom design page has the line items for a typical design package, and the bathroom layout angle is on the same page under the layout drawing section.

What a design package does NOT include

A design package is not the same as a contract, and it is not the same as a build scope. The package is the basis for both, but it does not include the construction labor, the materials, or the permits. A clean design package stops at the written scope of work, with a separate line-item estimate and a separate contract for the build.

Three things a design package does not include:

• Construction labor. The design is a deliverable, not a commitment to build. A separate contract is required.
• Materials. The design specifies the materials, but the homeowner procures them (or the contractor does, as a separate line item).
• Permits. The design includes the permit line item in the scope, but the permit is pulled by the contractor after the contract is signed.

A clean design contract spells out what is included and what is not, with a clear handoff to the construction phase. The bathroom design ideas page has the handoff checklist.

How the design phase protects the budget

Three design habits keep a San Diego bath remodel from drifting past its budget.

1. Finalize the design before demo. Changing the tile size after the waterproofing is in costs real money in torn-out membrane and new lead times. The 3D render is the single best tool for catching finish mistakes before demo.

2. Lock the fixture schedule before rough-in. Changing the valve from a pressure-balance to a thermostatic after the wall is closed costs $400-$900 in plumbing rework. The fixture schedule is the basis for the rough-in.

3. Hold a 10-15% contingency in reserve. Surprise substrate, hidden plumbing, or a code-required electrical upgrade will eat the contingency on most San Diego homes. The contingency is in the written scope, not in the designer’s estimate.

The right call for any bath remodel is to pay for a complete design package, sign off on the render and the scope, and then go to contract. The 3D render bathroom line items are on the bathroom design page.

What a San Diego design package actually costs

A complete design package with the six parts above runs $1,500-$4,000 for a typical San Diego bath remodel. The package is usually credited back to the homeowner if they sign a build contract within 30-90 days, so the effective cost of the design is $0 in most cases.

The line items for a typical design package:

• In-home measured consult: $250-$500
• Measured layout drawing (2D plan): $400-$900
• 3D render (2 views): $800-$2,400
• Fixture schedule: $300-$600
• Finish palette: $300-$700
• Written scope of work: $400-$800

For most projects, the 3D render is the line item that moves the budget the most. A single-view render lands at the low end. A 2-3 view render with material swaps and finish revisions lands at the high end.

How to compare two San Diego design quotes

Most homeowners get 2-3 design quotes before signing a build contract. The spread between the highest and the lowest is often 50-100%, and the spread is almost always about scope. Three things to check when comparing design quotes:

• Is the measured in-home consult a separate line item, or is it included? A separate line item means the designer is being paid for the time on site. An included line item means the design fee is covering the consult.
• Are the 3D render views specified? A quote that says “3D render” with one number is missing the view count, the resolution, and the revision count. A clean quote specifies 2-3 views at 4K resolution with 1-2 rounds of revisions.
• Is the fixture schedule a separate deliverable, or is it a paragraph in the design summary? A separate deliverable is the right call for any bath over $25,000. A paragraph is fine for a powder room refresh.

A clean design quote is one the homeowner can read and know exactly what they are paying for. A fuzzy design quote ends in a change order before demo.

How to read a 3D render

A good 3D render shows four things the homeowner cannot get from a 2D plan view:

• The scale of the tile. A 12x24 porcelain looks very different from a 4x4 ceramic at render scale, and the homeowner can catch the mistake in a 3D view.
• The color of the grout. A bright white grout on a 12x24 porcelain reads as busy, and a warm gray grout on the same tile reads as soft. The render is the only place to see this.
• The lighting. A 3D render with the right number of cans, the right under-cabinet LED, and the right dimmer shows the homeowner how the bath will look at 9pm on a weekday. The 2D plan does not.
• The reflection on the glass. A heavy glass frameless enclosure reads as a clean, modern surface in a 3D view, and a framed sliding door reads as dated. The render catches the difference.

The right call is to look at the render on a phone or a tablet at the actual size the tile will be installed, and to view the render in the lighting the bath will actually be used in (overhead cans for daytime, under-cabinet LED for nighttime).

The bathroom design ideas page has the full render checklist, including the questions to ask the designer about the lighting model and the material accuracy.

What to ask a bathroom designer

Three questions separate a clean design package from a corner cut:

• Will I get a written scope of work I can take to other contractors for bid? The right answer is yes. A designer who will not share the scope is a designer who wants the build.
• How many rounds of revisions are included in the design fee? A clean package includes 1-2 rounds of revisions on the layout and 1 round on the 3D render. A quote that says “unlimited revisions” is a quote that does not know how much work revisions are.
• Will the fixture schedule include make, model, and finish for every item? A clean schedule is a separate document with hyperlinks to the product page. A paragraph in the design summary is not a schedule.

A good designer will not flinch at any of these questions. For the full bath scope that pairs with the design package, the full bathroom remodel page has the line items and the project timeline.

Call (858) 925-5546 to set up a free in-home design consult. We measure the existing bath, walk through the layout options, and put together a 3D render and a written scope that the homeowner can sign off on before demo starts.