How to Design Your Ideal Home on a Residential Lot
You bought your lot — or you’re about to — and now comes the exciting part: designing your home. But it’s also the part where the most mistakes are made. Mistakes that cost money, time, and frustration.
After 15 years designing homes in Riviera Nayarit, I’ve compiled this guide with everything you need to know to turn your lot into the home of your dreams.
Step 1: Know Your Lot (For Real)
Before dreaming about island kitchens and panoramic terraces, you need to understand the real conditions of your lot:
Surface Area and Proportion
A 120 m² lot with an 8-meter frontage and 15-meter depth is designed very differently than one measuring 10 × 12 meters. The proportion determines how you’ll distribute spaces.
Orientation
Which way does the front face? In the Northern Hemisphere:
- Facing north: Constant, soft light. Ideal for the main facade
- Facing south: Receives direct sun. Requires solar protection on the facade
- Facing east: Morning sun. Pleasant for bedrooms
- Facing west: Intense afternoon sun. Needs shading strategies
Development Regulations
Every residential development has building regulations. At Del Lago Residencial, restrictions include:
- Maximum 2 stories
- 60% COS (building coverage ratio): You can build on 60% of the lot’s surface
- Residential use only
These restrictions aren’t limitations — they’re guarantees that your investment will be surrounded by homes of similar quality.
Step 2: Define Your Architectural Program
The architectural program is your list of needed spaces. Before drawing anything, answer these questions:
Who will live here?
- Couple without children → 2 bedrooms, spacious social areas
- Family with children → 3 bedrooms, play area, study
- Retirees → Everything on ground floor, accessibility, low maintenance
- Investment (vacation rental) → Maximum bedrooms, terrace, pool
How will you use the home?
- Will you work from home? → You need a study with good light and sound isolation
- Do you cook a lot? → Spacious, well-ventilated kitchen with storage
- Do you host guests often? → Guest bedroom, extra parking
- Do you love the outdoors? → Maximize terrace, garden, rooftop
Typical Layout for 120-125 m² Lots
With a 60% COS, you have approximately 72-75 m² of footprint (ground floor). On two levels, that translates to 144-150 m² of total construction. An efficient layout could include:
Ground Floor (~72 m²):
- Open living-dining room
- Kitchen with counter/bar
- Half bath for guests
- Rear patio or terrace
- Covered parking for 1-2 vehicles
- Laundry room
Upper Floor (~72 m²):
- Master bedroom with full bathroom and walk-in closet
- 2 secondary bedrooms
- Shared full bathroom
- Study or TV room
- Terrace
Rooftop (bonus space):
- Lounge area
- BBQ grill
- Discreet laundry drying area
Step 3: Prioritize What Matters
With a limited budget — and every budget is limited — you have to prioritize. Here’s my professional hierarchy:
Invest more in:
- Solid structure: Foundation and structure are the base of everything. Don’t cut corners here.
- Waterproofing: In a tropical climate, quality waterproofing prevents costly problems.
- Quality windows: Good windows = air conditioning savings + acoustic comfort.
- Electrical and plumbing: What goes inside the walls is extremely expensive to repair later.
- Kitchen and bathrooms: These are the spaces that most impact property value and quality of life.
Save on:
- Decorative finishes: Can be upgraded later. Paint walls white initially.
- Closets and furniture: Can be installed in phases.
- Elaborate landscaping: Start with grass and trees, improve over time.
- Advanced home automation: Nice but not essential. Add later.
Step 4: Choose Your Team Wisely
Your project’s success largely depends on the people executing it:
Architect
- Must know the local climate and regulations
- Ask to see similar previous projects
- Ensure they include structural plans, installations, and construction details
Builder
- Verify references and previous projects
- Demand a contract with clear scope, timelines, and penalties
- Establish a supervision system and progress-based payments
The Integrated Service Advantage
At Del Lago Residencial, the construction service includes everything from architectural design to finished home delivery. The advantage is enormous: a single point of contact, pricing from $12,000 MXN/m² (~$660 USD/m²), and the guarantee of the same developer.
Step 5: Realistic Costs
The question everyone asks: how much does it cost to build?
Ranges in the Riviera Nayarit area for 2026:
| Finish Level | Cost per m² (MXN) | Cost per m² (USD) | 150 m² Home |
|---|---|---|---|
| Basic (functional) | $10,000 - $13,000 | $550 - $715 | $82,500 - $107,250 |
| Standard (good quality) | $13,000 - $18,000 | $715 - $990 | $107,250 - $148,500 |
| Premium (luxury finishes) | $18,000 - $25,000 | $990 - $1,375 | $148,500 - $206,250 |
Additional costs to consider:
- Architectural project: 5-8% of construction cost
- Municipal permits: Approximately $800 - $1,650 USD
- Utility connections: Included in developments like Del Lago
- Contingency: Always reserve an extra 10%
Mistakes to Avoid
After supervising dozens of projects, these are the most common errors:
1. Building without approved plans. Never. Besides being illegal, it’s a recipe for disaster.
2. Copying plans from the internet. A house designed for Canada doesn’t work in the tropics. The design must respond to YOUR lot, YOUR climate, and YOUR lifestyle.
3. Changing the project during construction. Every change costs time and money. Make decisions on paper, not in concrete.
4. Sacrificing ventilation for more square footage. In a tropical climate, a poorly ventilated house is uninhabitable without air conditioning. Prefer fewer square meters with better design.
5. Forgetting about maintenance. Choose materials that age well with minimal upkeep. On the coast, humidity and salt air are real factors.
Conclusion
Designing and building your home is a process that, when done well, results in something far more valuable than square meters: a home made to your measure.
The key is to plan before building, prioritize the essentials, and surround yourself with competent professionals. If your lot is in Del Lago Residencial, you already have an advantage: complete infrastructure, clear regulations, and access to design and construction services with proven experience in the area.
Your ideal home starts with a good lot. Everything else is design.
Arq. Patricia Navarro is a residential architecture specialist with over 15 years of experience designing homes on Mexico’s Pacific coast.
