How the In-House Design Phase Works: From First Meeting to Construction Drawings

The design phase of a design-build project moves through a clear sequence: a first meeting to understand how you want to live, a site measure and existing-conditions survey, an initial concept and floor plan, then design development where the plan is refined and finishes are selected, and finally the detailed construction and permit drawings the build team works from. When design and construction sit under one roof, every one of those steps is shaped by the people who will actually build the home, so what gets drawn is what gets built.

Most homeowners picture a renovation as demolition, framing, and finishing. The truth is that the outcome is decided long before a single wall comes down. The design phase is where a project is won or lost, and understanding it helps you be a better partner in your own build. Here is exactly how the in-house design phase works, step by step.

Why an In-House Design Team Changes Everything

In the traditional model, you hire a designer or architect to draw your project, then hand those drawings to a separate builder to construct. The two never worked together, so the builder inherits decisions they had no part in, and when something does not work in the field, each side can point at the other.

An in-house design team removes that gap entirely. The person drawing your home talks daily to the people who will build it. Buildability, sequencing, and real material availability are baked into the drawings from the first sketch, not discovered as problems during construction. That single line of accountability is the whole reason design-build produces smoother projects, and it is how we structure every whole-home renovation and custom home across the GTA. If you want the bigger-picture comparison, read design-build vs hiring a general contractor.

Step 1: The First Meeting and Discovery

Everything starts with a conversation, not a drawing. In the first meeting the goal is to understand how you actually live and what is not working about your current home. A good design team asks more than it tells.

Expect questions like these:

• How do you use each room today, and what frustrates you?
• Who lives here now, and how might that change in the next five to ten years?
• What does a normal weekday morning and a weekend look like in your home?
• What do you love about the house, and what has to change?
• What is the priority if not everything can happen at once?

This discovery work sounds soft, but it is the foundation of a design that fits your life rather than a generic template. A renovation designed around real routines is one you stop noticing because it simply works.

Step 2: The Site Measure and Existing Conditions

Before anyone draws a line, the team documents what is actually there. A designer or technologist visits the home to take detailed measurements, photograph existing conditions, and note the things that shape what is possible: window and door locations, ceiling heights, structural walls, the location of plumbing stacks and electrical panels, and any visible signs of the home’s age.

This step matters more in older homes, where nothing is square and past renovations often hide surprises. If you are working on a century or older home, the existing-conditions survey is where a realistic plan begins. Designing from accurate measurements is the difference between drawings that build cleanly and drawings that unravel the moment demolition begins.

Step 3: The Concept and Floor Plan

With discovery and measurements in hand, the design team develops an initial concept. This is usually a floor plan, sometimes with early sketches or simple massing, that shows how the space could be reorganized to solve the problems you named in the first meeting.

At this stage the work is about the big moves, not the finishes:

• Where walls come down or go up
• How rooms connect and how you move through the home
• Where light comes from and how sightlines work
• How the layout serves both everyday use and the occasional gathering

You review the concept, react to it, and refine it together. It is normal and healthy to go through a few versions here. Changing a wall on paper takes nothing but a conversation. Changing it after it is framed is a different story, which is exactly why this phase deserves patience.

Step 4: Design Development and Selections

Once the plan is agreed, design development turns a good idea into a buildable one. The layout is refined, dimensions are locked, and the project moves from what to exactly how. This is also when the selections process begins: flooring, cabinetry, tile, countertops, fixtures, lighting, and hardware.

Because the design team is in-house and works alongside the build team, selections are grounded in reality from the start. You are choosing from materials that are actually available, that suit how the room is used, and that the crews know how to install well. For a deeper look at making those calls, our guide to choosing finishes and materials walks through how to decide without second-guessing yourself later.

Getting selections done during design, rather than mid-construction, is one of the biggest reasons a design-build project holds its schedule. When every material is chosen before demolition, crews are never left waiting on a decision, and long lead items can be ordered early.

Step 5: Construction and Permit Drawings

The final output of the design phase is a complete set of drawings the build team constructs from and the municipality reviews for a permit. Depending on your project, this package can include:

• Detailed floor plans, elevations, and sections
• Structural details and engineering where walls, spans, or foundations are affected
• Mechanical, electrical, and plumbing layouts
• Finish schedules that tie every selection to a specific room

Most substantial renovations, additions, and all new builds require a building permit, and these drawings are what the permit application is built on. Because the same team that designed the project also submits and manages the permit, you are not caught between a designer who drew the plans and a builder trying to interpret them. Complete, code-compliant drawings submitted the first time are the best defence against a slow approval.

How the Design Phase Sets Up a Smooth Build

The reason the design phase deserves this much care is simple: almost every problem that shows up during construction traces back to a decision that was rushed, skipped, or left open. A team that starts building from rough sketches is a team that discovers issues in the field, where they are slowest and most disruptive to solve.

When the design is finished properly, the build inherits a clear plan, a locked set of selections, and drawings that were made with construction in mind. That is what keeps momentum from the first day of demolition to the final walkthrough. To see how the design phase flows into the build schedule, our renovation timeline guide maps the phases end to end.

Andare Homes is a quality-focused design-build company serving homeowners across the GTA, with an in-house design team and one accountable build team. We are rated 5.0 across 55 Google reviews, licensed, insured, and WSIB-covered, with every project built to the Ontario Building Code and backed by our 2-year workmanship warranty. New builds are Tarion-registered. You can see the standard of finish across our projects.

Frequently Asked Questions

How long does the design phase of a renovation take? It varies with scope, but a substantial renovation typically spends several weeks to a few months in design and selections before construction begins. Larger and more complex projects, especially additions and custom homes, sit at the longer end. The time invested here is what keeps the build itself moving without delays.

What is the difference between design-build and hiring a designer separately? With design-build, the design team and the build team work under one roof and one line of accountability, so the drawings are shaped by the people who will construct them. Hiring a designer separately means handing finished drawings to a builder who had no part in them, which is where coordination problems and finger-pointing tend to start.

Do I choose all my finishes before construction starts? Yes, and that is the point. Completing your selections during the design phase means crews are never waiting on decisions and long lead items can be ordered early, which protects both the schedule and the quality of the install.

Do I need permit drawings for my project? Most structural work, additions, and all new builds require a building permit, and the construction drawings produced in the design phase are what the permit application is based on. Because our team designs and permits the project together, we handle that submission and manage it through approval for you.

Ready to Start With a Team That Designs and Builds

If you want a home that is designed once, around how you actually live, and built by the same team that drew it, the design phase is where that begins. Book a consultation with our in-house design team and we will walk your space, listen to how you want to live, and show you how the process works from the very first meeting.