Many people spend months searching for an architect before understanding how the process actually works — or what it really costs. This guide exists to change that. Read it before our first conversation and we'll be able to skip straight to what matters: your project. — Andrés Villaveces, Design DirectorStart Reading ›
If you're reading this, you're probably considering building a custom home. Maybe you already have a property, or a rough idea, or just a serious question about whether it's even possible for you. It's a big decision, and it can feel overwhelming, but it doesn't have to be.
There's a process that architects and builders have followed for a long time, with clear phases, real timelines, and costs that can be understood before you commit to anything.
We made this guide for that reason. It walks through who's involved, what gets done, what it costs, and how long it takes. It's the conversation we'd want to have with you anyway, just written in this guide so you can read it on your own terms.
Take your time with it, and if something isn't clear, please reach out.
The costs, timelines, and fee ranges here come from our practice: modern homes in the Seattle–Bellevue area and greater Eastside, current as of 2026. Construction costs vary by site, builder, and market. Design fees vary by scope and architect. If you're building elsewhere or at a different scale, the process and roles still apply — bring the numbers to your own team as reference points.
"Every custom home project involves the same core triangle: the Owner, that's you, the Architect, and the Builder. Each has a distinct role, and understanding where one ends and another begins will help you ask the right questions, and avoid the most common misunderstandings."
Juan P. León, PrincipalA custom home requires three parties: you, your architect, and your builder. Each holds a separate contract and has a distinct role.
Three things come from you: the Site, the Budget, and the Brief. The Site makes the project real. The Budget makes it realistic. The Brief is the goal: the size of the home, its spaces, and the character that makes it yours.
The architect is the only professional who carries the design, the technical work, the strategic decisions, and the coordination of everyone involved, all under a single contract.
The builder turns the project into a home, figuring out how it goes together, who does what, and solving the problems nobody else thinks about.
"The single most important thing you bring, beyond the land and the budget, is an open mind and a spirit of curiosity. Design is a process of discovery. The more openly you engage with it, the better the outcome."
Andrés Villaveces, Design DirectorAbout one year for design and permits, then one to two for construction.
The project parameters are defined. Designing a custom home starts with understanding three things: what the site will allow, what the code will allow, and what the budget will support. Each has limits and opportunities, and they're not always obvious. We study them carefully before drawing begins, so the design that follows is buildable, on budget, and shaped by what the site does best.
The character, scope, scale, and size of the project are defined at this stage. This is the most collaborative phase. We meet often, explore options, and refine to make the big decisions: what the house looks like, how it sits on the property, how it feels to move through it. Functionality, appearance, and performance are all considered. The schematic design is then shared with two parties: with a builder, for an initial opinion on costs, and with the city, in a pre-application meeting, to surface regulatory concerns before the permit application is filed.
All technical work is integrated into the drawings, and the Building Permit Application is submitted to the city. We bring in the engineering team for structural, mechanical, electrical, plumbing, and civil, and coordinate their designs and technical requirements into the drawings. Once engineering is fully integrated, the drawings and supporting documents are assembled into a Building Permit Application, which is submitted to the city to start their review process.
The complete design is documented. The technical drawings and specifications your builder will use to price and build the project are completed at this stage. Following the Building Permit application, the interior design process begins: room by room, each space is fully developed, with material palettes, finishes, fixtures, and built-in elements all selected and integrated into the documents. Kitchens and bathrooms come first; stairs, custom elements, and finishes follow. The result is a coherent design throughout, not a collection of independent choices.
The design materializes and your home gets built. This is the longest phase, typically 12 to 24 months. We visit the site regularly, review submittals and shop drawings, answer questions as they come up, and produce supplementary drawings when needed. Issues will arise (site conditions, material availability, decisions you'll need to make), and the team will work through them. What was decided during design has set the course; the work now is to deliver it.
A month-by-month view of a typical custom-home project. Ten months of design and permits, two months of buffer for city review and contract, then twelve to twenty-four months of construction.
"Partnering with Métrica on our custom home in Kirkland has been a great experience. They are a talented, knowledgeable, and creative team. We really appreciated how they listened to our feedback and were very understanding during the entire process. Andrés and Juan, just awesome all around."
"Andrés' design is one of a kind, you cannot find anything like it in the greater Seattle area. And it's always practical. He made really good use of the land, and the floor plan is super reasonable. Juan and the team continuously provided weekly reports with milestones. Everyone at Métrica is genuinely responsive. I don't think we can find a better team."
"Thank you for the photos. It really does make me realize how much of our house stands out. Every day, we are extremely grateful for such a beautiful home and view. Thank you and the entire team for designing it so well!"
"Andrés was a true visionary, and his expertise and creativity were evident in every aspect of his work. He helped us design an amazing home that was beyond our initial expectations. His layout design was different from our initial thought, but we found ourselves liking it more and more every time we looked at it. Juan was very professional and paid extra attention to details, ensuring every aspect of the project was handled with care and precision."
"As your architect, we design. That part is expected. But design is only half of what we do. The other half is orchestration. Building a custom home isn't a single project, it's a collection of interdependent ones. We've done this long enough to know who to call, in what order, and how to keep everyone working toward the same goal."
Andrés Villaveces, Design DirectorConstruction cost is a function of size and design ambition. In the Seattle–Bellevue area, costs range from around $350/SF for production homes to $2,000/SF or more for highly custom builds. Métrica designs in the $650 – $1,200/SF range, and we recommend at least $800/SF for real quality and design ambition.
Note: $800/SF includes GC fees and sales tax. It is equivalent to about $625/SF for net construction alone. Some people may quote without fees or taxes, and the number will appear lower. You can read more about it here.
Pick a home size and a level of design ambition to get a planning-level budget for construction. If you are not sure how to size the home, see our size planner here.
Our fees are in line with industry standards, at around 10% of construction cost. One contract covers the full scope: architecture, engineering, and all technical work.
Our fee is fixed and based on project square footage. You know the number before we start, and it does not change if your construction budget shifts. The rate per square foot decreases as project size increases.
The fee covers architecture, all engineering, and the consultants your project requires. We hold the contracts and coordinate the work; you do not manage any of it.
Some projects need additional consultants by choice or necessity (critical areas consultant, project biologist, or others). These are not included in the base fee.
Permitting fees (plan review, building permit, and inspections) are paid by the owner directly to the jurisdiction. They typically run 2 to 3% of construction cost, but vary by project scope and jurisdiction. We can help you estimate these early in the process, but the final number comes from the permitting authority.
A custom home's total cost has two parts: construction costs (what you pay the builder) and project costs (what you pay everyone else). The proportions stay roughly consistent across project sizes.
Together they break down as follows.
The total above covers design and construction. Other costs sit outside it depending on the project, including land acquisition, landscaping, furnishings, owner's insurance during construction, and financing.
"Before a single shovel hits the ground, there are more specialists involved than most clients expect. Each one needs to be briefed, coordinated, and aligned. We've spent years building relationships with the right engineers, the right surveyors, the right consultants, and we know who's best for what kind of site and what kind of problem. That network, tested across dozens of projects, is part of what you're hiring. Most clients don't see that work. They shouldn't have to. That's what we're here for."
Juan P. León, PrincipalThe business side of a project shouldn't be a source of stress. We structure our agreements to be simple, predictable, and fair, so your energy goes into the design, not the paperwork.
The Design & Engineering line in the calculator is ours. It covers architecture, engineering, and the consultants your project requires. One number, one contract, one point of contact.
We Bill the Same Amount Every MonthOne deposit to start, then one invoice per month for the same amount. The deposit is 10% of the contract. It reserves your place in our schedule and funds the early project expenses, including our own staff time and the first consultants we engage: land survey, geotechnical report, arborist study, and others. After that, you receive the same invoice every month for the duration of the contract.
Our Contract Runs One YearThe design phases typically take 10 months. We contract for 12. That buffer covers permit review delays, which are common and outside anyone's control. If something needs to change, we have a conversation and adjust together. No unilateral surprises on either side.
Time Is Money, for Both of UsThe longer design and permitting take, the more expensive the project becomes, regardless of what the construction budget says. This is one of the most common concerns new clients raise: how do we stay on schedule? The answer is that our interests are aligned. For you, schedule is money. For us, it is cashflow. Our fee is fixed, so a longer timeline does not mean more revenue, it means less efficiency. We move quickly because both sides benefit when we do.
Out-of-Scope ServicesSome sites require additional studies: critical areas reports, geotechnical follow-up, specialized consultants. Some neighborhoods add HOA review on top of the city process. And sometimes the scope simply changes. You decide to add a floor, expand the program, or change direction mid-design. It happens. We flag these situations early and either agree on a fixed number upfront or bill hourly. Nothing proceeds without your approval.
How We CommunicateWe keep you updated weekly. Most meetings are virtual, which is more efficient and lets us share the design on screen and walk through models together in real time. We meet in person at key moments, during regular business hours, on a recurring schedule that works for both sides.
"The goal is that you always know where you stand: what has been done, what is coming, and what it costs. That predictability is part of the service."
Andrés VillavecesOne site visit per month and a weekly allowance of staff time to review and respond to the contractor's questions is included in our fee. Beyond that, construction administration is billed hourly. How much is needed is unpredictable; it depends on the project, the builder, and what comes up on site. Most of the day-to-day work is covered by the allowance. Larger items (a design change, a scope adjustment, a detail that needs to be reworked) may require additional hours. We flag those as they come up, and nothing proceeds without your approval.
A guide that's honest about who we work well with saves everyone time.
Our best clients are demanding about excellence. They recognize it when they see it and are willing to invest in getting it right. They value elegant problem-solving and the clarity that comes from a disciplined process. They give the work room to develop. They understand that design is a process of discovery, that strong ideas need space to evolve, and that architecture takes time. A thoughtful budget helps too: sufficient to do something meaningful, but disciplined enough to encourage elegant solutions rather than excess.
You Bring the DecisionsYou are a key part of this process. Design moves forward through decisions, and decisions require your input. We will guide you, present options, and give you our recommendation. But the project moves at the speed of your decisions. A delayed decision ripples through everything that follows.
How Much Time Will This Take?Less than you might think, but more than zero. During the Design phase, expect regular meetings and active back-and-forth. During Engineering, we are mostly heads-down and will reach out when we need input. During Detail and interiors, you are involved again. Material selections and room-by-room decisions need your eye. Expect showroom visits to see materials, finishes, and fixtures in person before committing. During Construction, you can be as involved or as detached as you want, but most clients end up visiting site about once a week. It is your home going up, and seeing it in person changes things. A good builder makes this phase smooth. Budget roughly a few hours per week during active design phases.
We take on a small number of custom homes each year. That's not a constraint, it's a choice. It means every project gets our full attention, and every client works directly with us. If you are thinking about a project, reach out early. We are typically booked a few months ahead.
The right builder changes everything.
Earlier than most people expect. We like to have a contractor involved by the end of the Design phase, before engineering begins. At that point we have enough drawn to get a meaningful cost opinion, but the design is still flexible enough to respond to what we hear. Waiting until the permit set is complete means any budget surprises come too late to address without expensive rework. Early involvement costs nothing and gives everyone better information.
What to Look ForExperience with custom homes at your quality level. A track record of finishing on budget and on schedule. Transparency about how they manage subcontractors and handle surprises. References you can actually call.
Chemistry Is the Most Important ThingYou will spend 12 to 24 months in a close working relationship with this person. You will make hundreds of decisions together. There will be surprises (there always are), and how your contractor handles those moments matters more than their portfolio. Trust your instincts. If communication feels off in the interview, it will feel worse on site. The right contractor should make you feel confident, not managed.
How We HelpWe don't select your contractor; that's your decision and your relationship. But we can recommend builders we've worked with, contractors we know and want to work with, or builders who've been referred to us by people we trust. If there's someone better suited to your specific project, we will say so. Our recommendation will always be whoever is right for the job, not just whoever we've worked with before. Our duty is to you. We will help you structure and evaluate the bid, and make sure whoever you choose fully understands the design intent before they sign. During construction, we stay involved: regular site visits, review of submittals and material samples, and a direct line when questions come up in the field.
A home is a project, not a product. There are no prototypes, no second chances. Every site is different, every material combination is unique, and no set of drawings can anticipate everything. Roughly 5 to 10% of design gets resolved on site. That's not a gap in the process; that's the nature of building.
Take window systems. We can spend weeks detailing exactly how a window gets installed, and then your contractor finds a better system, or a less expensive one. If we'd over-documented the original, that work is wasted. Instead, we document design intent and finalize the technical coordination directly with the contractor and fabricators through shop drawings, which we review and approve before anything gets built.
If you have a site, a budget, and a question, we'd like to hear from you. Send us a note and we'll set up a first conversation.
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