CR Home Build Advisory

CR Home Build Advisory Independent Construction Consulting & Advising, Owner Representation, and Pre-Purchase Home Evaluations for U.S. & Canadian citizens in Costa Rica. I'm a U.S.

Permanent resident. Not CFIA-registered. Services are informal. USD only via U.S.-based platforms. citizen and permanent resident of Costa Rica, providing independent construction consulting and advisory services exclusively to foreign buyers and construction project owners (U.S. & Canadian citizens). I bring over 20 years of construction industry experience, including studies in building science,

photovoltaic design and installation, industrial/commercial electricity, and project management. My background includes custom home building, real estate investing, and hands-on experience across many trades. My services are non-CFIA-certified, billed in USD, and include pre-purchase home evaluations.

I want to share this recent review as a quick example of what actually adds value in a technical due diligence evaluatio...
14/04/2026

I want to share this recent review as a quick example of what actually adds value in a technical due diligence evaluation, especially for brand-new construction.

A lot of people assume new builds = low risk. In reality, that’s often where some of the biggest and most expensive issues show up.

This was a pre-purchase evaluation of a 2,600 sq ft brand new home built on a cliffside lot.

Part of the process included reviewing the pre-construction soil study and slope stability analysis in advance so those recommendations could be kept in mind during the on-site evaluation.

This wasn’t just a walkthrough. It was a five-hour, hands-on evaluation that included:

• Functional testing of mechanical, electrical, and plumbing systems and appliances

• Evaluation of structural and architectural components

• Assessment of site conditions, including drainage and slope interaction

• Cross-checking what was built against design intent and good construction practices

The goal is to understand how the house will actually perform, not just how it looks on the surface.

This was followed by a written report and a post-evaluation consultation to walk through everything so the client could make a confident, informed decision.

If you have questions about the process or what to look for during due diligence, feel free to ask here in the comments.

Christopher Drown
CR Home Build Advisory

𝐖𝐡𝐚𝐭’𝐬 𝐡𝐢𝐝𝐢𝐧𝐠 𝐢𝐧𝐬𝐢𝐝𝐞 𝐲𝐨𝐮𝐫 𝐬𝐡𝐨𝐰𝐞𝐫 𝐝𝐫𝐚𝐢𝐧?During a recent 𝐩𝐫𝐞-𝐩𝐮𝐫𝐜𝐡𝐚𝐬𝐞 𝐡𝐨𝐦𝐞 𝐞𝐯𝐚𝐥𝐮𝐚𝐭𝐢𝐨𝐧 𝐨𝐟 𝐚 𝐧𝐞𝐰𝐥𝐲 𝐜𝐨𝐧𝐬𝐭𝐫𝐮𝐜𝐭𝐞𝐝 𝐡𝐨𝐮𝐬𝐞, I scop...
16/03/2026

𝐖𝐡𝐚𝐭’𝐬 𝐡𝐢𝐝𝐢𝐧𝐠 𝐢𝐧𝐬𝐢𝐝𝐞 𝐲𝐨𝐮𝐫 𝐬𝐡𝐨𝐰𝐞𝐫 𝐝𝐫𝐚𝐢𝐧?

During a recent 𝐩𝐫𝐞-𝐩𝐮𝐫𝐜𝐡𝐚𝐬𝐞 𝐡𝐨𝐦𝐞 𝐞𝐯𝐚𝐥𝐮𝐚𝐭𝐢𝐨𝐧 𝐨𝐟 𝐚 𝐧𝐞𝐰𝐥𝐲 𝐜𝐨𝐧𝐬𝐭𝐫𝐮𝐜𝐭𝐞𝐝 𝐡𝐨𝐮𝐬𝐞, I scoped the shower drain line and discovered several plumbing defects in a single area that would not be visible during a typical walkthrough inspection.

The scope revealed:

• A hole in the drain line from improper installation, allowing wastewater to leak into the soil beneath the foundation near an exterior wall (on a hillside home).
• No P-trap installed at the shower drain.
• A second shower drain line was improperly tapped (crushed through) into the smaller branch line before the sanitary trunk line.
• Excess PVC solvent cement, construction debris, and mud inside the drain line.

Issues like these can lead to soil saturation beneath the slab, erosion under footings and foundation beams, moisture intrusion through the foundation into the walls, sewer odors, drainage problems such as slow draining or backups, and potential long-term structural concerns if not corrected.

My evaluations are different from a typical home inspection. I combine my education in building science and experience in the skilled trades, with over 10 years as a custom home builder, and owning a home in Costa Rica. Using specialized building forensics tools and techniques, I look inside building systems to identify hidden defects others won’t find before buyers close on a property.

Keep in mind, the most serious problems in a home are the ones you can’t see without the right tools and experience.

And new construction doesn’t automatically mean better quality. In many cases, new homes can actually be harder to evaluate because problems may take months or even years to reveal themselves. That’s where education, experience, and the right tools matter most during a home evaluation.

If you’re buying or building in Costa Rica, an independent client-side home evaluation can help uncover problems early before they become expensive surprises.

Christopher Drown
CR Home Build Advisory

Always a pleasure to connect with Sarah Elena and present about building and buying your home in Costa Rica at her Roadm...
06/02/2026

Always a pleasure to connect with Sarah Elena and present about building and buying your home in Costa Rica at her Roadmap to Costa Rica conference.

Drawing Attention to Hot Water Safety: What a Pre-Purchase Home Evaluation Can Reveal in Costa Rica Observation: Thermal...
21/10/2025

Drawing Attention to Hot Water Safety: What a Pre-Purchase Home Evaluation Can Reveal in Costa Rica

Observation: Thermal imaging of the kitchen faucet supplied by an on-demand electric water heater showed water temperatures reaching 143°F (62°C) during normal operation.

Concern: This temperature exceeds the recommended safe limit of 120°F and poses a scalding hazard, particularly for children and older adults. On-demand systems can fluctuate in output temperature based on flow rate, inlet water temperature, and electrical load, making them prone to overheating under low-flow conditions.

Recommendation: The on-demand heater’s thermostat or digital control should be adjusted to limit the output temperature to approximately 120°F (49°C). The flow rate should also be verified to ensure stable operation. Consistent calibration helps prevent scalding, improves safety, and extends the lifespan of internal heater components.

When the Ground Isn’t Grounded: What a Pre-Purchase Home Evaluation Can Reveal in Costa Rica Observation: A current rea...
21/10/2025

When the Ground Isn’t Grounded: What a Pre-Purchase Home Evaluation Can Reveal in Costa Rica

Observation: A current reading of approximately 1 amp was measured on the grounding conductor within the electrical panel during testing.

Concern: Grounding conductors should remain at or near zero current under normal operation. The presence of even a small, continuous current indicates a neutral-to-ground fault, improper bonding, or a shared neutral pathway somewhere in the system. While 1 amp may seem minor, it’s enough to cause stray voltage on metal components, accelerate corrosion, or present shock risk to occupants if left uncorrected.

Recommendation: A qualify electrician should investigate the source of the stray current and correct any improper neutral-ground connections. The grounding system should be verified to ensure it is isolated from current-carrying conductors and performing safely under load.

What a Pre-Purchase Home Evaluations Can Reveal in Costa RicaObservation: A 50-amp double-pole breaker feeding the on d...
21/10/2025

What a Pre-Purchase Home Evaluations Can Reveal in Costa Rica

Observation: A 50-amp double-pole breaker feeding the on demand water heater is wired with undersized 10-gauge copper conductors, which are only rated for up to a 30-amp circuit.

Concern: The undersized conductors are unable to safely carry the current demanded by a 50-amp circuit, resulting in excessive heat buildup. During testing, the conductors reached approximately 174°F after running the water heater for about one minute. These temperatures are approaching the melting point of typical wire insulation and pose a significant fire and electrical hazard.

Recommendation: A qualified electrician should replace the existing conductors with 6-gauge copper wire rated for 50 amps and confirm all breaker terminals are properly torqued to manufacturer specifications. The circuit should be re-evaluated for proper ampacity and insulation temperature rating after correction.

Site visit with my client and our architect, touring a project site of a potential partner, Bildtek Costa Rica — a compa...
07/10/2025

Site visit with my client and our architect, touring a project site of a potential partner, Bildtek Costa Rica — a company that engineers, fabricates, and erects galvanized cold-formed steel building systems for structural framing.

It’s always great to see innovation in action and explore how these systems can enhance construction efficiency and precision here in Costa Rica.

𝐂𝐨𝐧𝐬𝐢𝐝𝐞𝐫𝐢𝐧𝐠 𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐚 𝐇𝐨𝐦𝐞 𝐢𝐧 𝐂𝐨𝐬𝐭𝐚 𝐑𝐢𝐜𝐚?The costly mistakes, delays, and miscommunications so many buyers experience c...
10/09/2025

𝐂𝐨𝐧𝐬𝐢𝐝𝐞𝐫𝐢𝐧𝐠 𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐚 𝐇𝐨𝐦𝐞 𝐢𝐧 𝐂𝐨𝐬𝐭𝐚 𝐑𝐢𝐜𝐚?

The costly mistakes, delays, and miscommunications so many buyers experience can be avoided by working with someone who represents your best interests from design through construction.

As a full-service Owner’s Representative, I help my clients navigate the entire design and construction process, including:

✔️ Scope development, planning, and due diligence

✔️ Team building and vetting of architects, builders, and specialty contractors

✔️ Contract refinement and construction agreement development

✔️ Design coordination and schematic review of plans

✔️ Budgeting and value engineering

✔️ Milestone payment release and contract management

✔️ Installation specifications for complex systems and components

✔️ Independent progress evaluations, quality control, and compliance oversight

I specialize in implementing North American standards for business, quality, safety, and functionality, from the very beginning.

Each proposal is custom-written to meet your project’s specific location, scope, and requirements. While fees vary, full-service Owner’s Representative engagement typically ranges from 3% to 5% of the total project cost.

My availability is intentionally limited—I only take on two to three clients per year. I currently have an opening for early 2027, with a waitlist for 2028 and beyond.

If you’d like to discuss your project and explore whether we’re a fit, I’d be glad to schedule an initial consultation.

Note: My evaluations are intended to **supplement—but not replace—*official inspections conducted by CFIA-registered architects or engineers. They do not substitute any inspections required by Costa Rican regulations. I maintain no formal affiliation with realtors, architects, engineers, or builders—ensuring my assessments remain unbiased and solely focused on protecting your best interests.

Consultor independiente en construcción. Mis evaluaciones son únicamente de asesoría y no sustituyen inspecciones realizadas por profesionales colegiados en el CFIA.

Christopher Drown
CR Home Build Advisory

𝐂𝐡𝐨𝐨𝐬𝐢𝐧𝐠 𝐭𝐡𝐞 𝐑𝐢𝐠𝐡𝐭 𝐁𝐮𝐢𝐥𝐝𝐞𝐫 𝐟𝐨𝐫 𝐘𝐨𝐮𝐫 𝐂𝐨𝐬𝐭𝐚 𝐑𝐢𝐜𝐚 𝐃𝐫𝐞𝐚𝐦 𝐇𝐨𝐦𝐞13 Interview Questions to Ask When Vetting BuildersBuilding a h...
03/09/2025

𝐂𝐡𝐨𝐨𝐬𝐢𝐧𝐠 𝐭𝐡𝐞 𝐑𝐢𝐠𝐡𝐭 𝐁𝐮𝐢𝐥𝐝𝐞𝐫 𝐟𝐨𝐫 𝐘𝐨𝐮𝐫 𝐂𝐨𝐬𝐭𝐚 𝐑𝐢𝐜𝐚 𝐃𝐫𝐞𝐚𝐦 𝐇𝐨𝐦𝐞

13 Interview Questions to Ask When Vetting Builders

Building a house is a serious commitment, and undertaking a construction project in a foreign country like Costa Rica presents additional challenges. As a North American, choosing the right builder is one of the most important decisions you’ll make. A good choice means a smoother, less stressful process (notice I said less stressful, not stress-free).

In my role as a full-service Construction Owner’s Representative in Costa Rica, I’m sharing 13 essential interview questions I use to vet builders for my North American clients. These go beyond glossy portfolio shots and dig into how a builder actually manages a project from start to finish.

1. Experience and Expertise:

Ask how long they’ve been building, what kinds of projects they’ve managed, and whether they’ve built in your region of Costa Rica.

Ask:

-Could you walk me through your experience with residential buildings in this region?

-What types of projects have you completed?

-Can you explain your process, from proposal and budgeting through to inspections and handover?

2. Licensing and Credentials:

Costa Rica doesn’t license builders the way some U.S. states or Canada do. By law, a licensed architect or engineer (registered with CFIA — Colegio Federado de Ingenieros y Arquitectos) must oversee compliance and maintain the cuaderno de bitácora (construction logbook).

Ask:

-Do you hold CFIA credentials yourself, or do you work with a licensed architect/engineer for compliance?

-Can you provide documentation or a CFIA license number I can verify?

3. References, Portfolio, and Sample Contract:

Good builders don’t hide past work. Look at projects under construction, recently finished, and most importantly, homes that are 3–5 years old. Time tells the truth about methods and materials. Also, ask to review a sample contract before committing.

Ask:

-Can you provide references I can contact directly?

-Can I view projects at various stages, including those completed a few years ago?

-Can I review a sample contract?

4. Local Regulations and Permits:

Permitting in Costa Rica is complex. Your builder should understand the process and be able to help your design team avoid headaches.

Ask:

-How do you ensure compliance with local building codes and regulations?

-Can you share an example of a past permitting challenge and how it was solved?

5. Timeline and Scheduling:

Every builder has a timeline, but comparing across multiple builders reveals transparency and how they handle delays.

Ask:

-What is your estimated timeline with key milestones?

-How do you deal with weather delays, material shortages, or other setbacks?

6. Project Management:

Project management is where many builds succeed or fail. Understand who is responsible for what, how subs are managed, and how often the builder is actually on-site.

Ask:

-What parts of the work do you handle in-house vs. subcontract?

-How do you manage scheduling, budgets, and resources?

-How often are you on site personally, and who manages day-to-day quality control?

-Who orders and tracks materials?

7. Labor and Subcontractors:

The team behind your builder matters just as much as the builder.

Ask:

-Who makes up your core crew, and what are their roles?

-Which parts of the project do you subcontract, and how do you vet subs?

-Who specifically handles electrical, plumbing, and mechanical?

8. Safety, Security, and Insurance:

Job site safety and security save time, money, and headaches. Insurance verification is equally important; don’t just take their word for it.

Ask:

-What safety protocols do you use?

-How do you secure materials and equipment?

-What types of insurance do you require?

9. Housekeeping, Site Cleanliness, and Turnover Condition:

A well-managed job site should also be clean and organized. Poor housekeeping leads to accidents, lost materials, and unhappy neighbors. It also sets the tone for the finished quality of your home.

Ask:

-How do you maintain daily housekeeping and site cleanliness during the construction phase?

-Who is responsible for maintaining an organized site?

-How do you store and secure building materials?

-What condition will the property be in when construction is finished and handed over?

10. Materials and Quality:

Quality isn’t just about picking the right materials; it’s about proper installation.

Ask:

-What are your preferred materials for this climate, and do I have input on selections?

-How do you ensure that the installation matches the manufacturer's specifications?

-How do you stay up-to-date with the latest methods and materials?

11. Communication and Updates:

Consistent updates are critical, especially when building abroad. Also, remember: North Americans tend to be more direct, which can come across differently here. Set clear expectations upfront.

Ask:

-How often and by what method will you keep me updated?

-What systems do you use for communication and documentation?

-Do you have experience working with North American clients?

12. Cost, Payments, and Budget Contingencies:

Transparency is key. Don’t settle for vague numbers, and dig into how they handle contingencies and changes.

Ask:

-Can you provide a detailed breakdown of estimated costs?

-Would you be willing to help me and my team with the value of the engineering process?

-What contingency percentage do you recommend, and how do you handle overruns?

-How do you manage payments with suppliers and subs?

-How do you handle scope changes or unexpected issues like currency fluctuations (USD vs. CRC)?

-What is your Project Management or Builders' fee?

13. Warranties, Aftercare, Financial Stability, and Oversight:

A confident builder should stand behind their work, have financial stability, and be comfortable with professional oversight.

Ask:

-What warranties do you provide, and how do you handle issues after completion?

-Do you offer a maintenance walkthrough, manuals, or ongoing support?

-Can you connect me with a past client who used your warranty?

-How do you manage cash flow to ensure subs and suppliers are paid on time?

-Have you ever had to abandon or walk away from a project?

-Are you open to working with an owner’s representative or third-party inspector? What has your experience been working with them?

Final Thoughts:

Selecting a builder in Costa Rica isn’t just about cost; it’s about trust, transparency, and partnership. These 13 questions will help you get past the sales pitch and see how a builder really operates.

Building abroad might be one of the biggest investments you’ll ever make. By asking the right questions, you’ll reduce risk, protect your budget, and move one step closer to making your Costa Rica dream home a reality.

Christopher Drown
CR Home Build Advisory

𝐂𝐚𝐬𝐞 𝐒𝐭𝐮𝐝𝐲: 𝐓𝐫𝐚𝐜𝐢𝐧𝐠 𝐚 𝐇𝐢𝐝𝐝𝐞𝐧 𝐖𝐚𝐭𝐞𝐫 𝐋𝐞𝐚𝐤 𝐔𝐧𝐝𝐞𝐫 𝐚 𝐅𝐨𝐮𝐧𝐝𝐚𝐭𝐢𝐨𝐧 𝐢𝐧 𝐂𝐨𝐬𝐭𝐚 𝐑𝐢𝐜𝐚 — 𝐟𝐨𝐫 𝐔𝐧𝐝𝐞𝐫 $𝟓𝟎𝟎During a recent limited-scope e...
14/08/2025

𝐂𝐚𝐬𝐞 𝐒𝐭𝐮𝐝𝐲: 𝐓𝐫𝐚𝐜𝐢𝐧𝐠 𝐚 𝐇𝐢𝐝𝐝𝐞𝐧 𝐖𝐚𝐭𝐞𝐫 𝐋𝐞𝐚𝐤 𝐔𝐧𝐝𝐞𝐫 𝐚 𝐅𝐨𝐮𝐧𝐝𝐚𝐭𝐢𝐨𝐧 𝐢𝐧 𝐂𝐨𝐬𝐭𝐚 𝐑𝐢𝐜𝐚 — 𝐟𝐨𝐫 𝐔𝐧𝐝𝐞𝐫 $𝟓𝟎𝟎

During a recent limited-scope evaluation, I was called in by a local engineer, familiar with my troubleshooting tools and techniques, to collaborate directly with the property owner in investigating an issue with water accumulating in floor plug receptacles in a multi-family condominium residence. Using thermal imaging, moisture meter readings, and targeted testing, several key findings emerged:

1. Elevated Moisture in Kitchens & Bathrooms:

-Thermal scans revealed high-moisture areas along lower portions of shared walls, with visible grout discoloration and bubbling paint. Standing water was discovered in the kitchen floor receptacles, refilling to pre-extraction levels within about two hours of extraction. At the time of testing, these receptacles were not energized; however, the potential hazard if they were powered was significant.

2. Main Water Supply Leak Confirmed:

-Static pressure testing isolated the main supply lines from all fixtures. One unit started with a pressure reading 5 psi lower than its neighboring unit and dropped an additional 10 psi within two minutes, a strong indicator of an active leak beneath the slab. The water pressure in the other units remained unchanged for over an hour.

3. Drain & Septic System Cleared as Primary Causes:

-Drain line scoping and dye testing found no major fractures or leaks in the sanitary system. Different-colored dyes were introduced into different sections of the drainage system, and no dye migrated into the floor receptacles during a three-hour observation period.

4. Roof & Gutter System Functioning Properly:

-Drone-assisted roof inspection and moisture testing ruled out roof leaks. Gutters were properly connected and directing water away from the structure.

5. Secondary Issues Noted:

-Shower fixtures lacked proper sealing; grout voids on floors and walls were found with higher moisture content behind surrounding surfaces.

-Exterior grading around the foundation did not meet industry slope standards, which could contribute to ground saturation beneath the foundation; however, this was not determined to be the primary cause.

Recommendations:

1. Lockout/Tagout – Secure the electrical breakers for affected floor receptacles and lock them out until the electrical circuits have been evaluated, repaired, and confirmed safe to energize.

2. Pinpoint Leak Location – Perform an acoustic leak detection test to precisely locate the main supply leak under the slab, minimizing damage, dust, and repair costs.

3. Repair & Restore – Remove floor tile, chip slab, excavate localized areas, repair the damaged water line, replace slab sections and finishes, and fully dry the affected areas.

4. Mold & Air Quality – Monitor for mold growth within affected wall cavities and arrange for remediation if elevated spore counts or visible mold are detected. Consider post-repair indoor air quality testing to verify safe conditions.

5. Monitor Moisture – Track moisture levels and manage humidity in the dwellings after repairs; re-inspect before restoring power to affected receptacles.

6. Preventive Maintenance – Address sealing of showers, correct grading deficiencies, and continue routine maintenance of the gutter system.

Takeaway:

, even small, visible symptoms like bubbling paint or discolored grout can signal major underlying issues.

I often tell clients: Anyone can build a house that looks good on the day it’s completed. The real question is, will it stand the test of time?

Many of the issues I uncover in new construction won’t reveal themselves to the typical homeowner for one, two, even five or ten years. By the time the damage becomes visible to the untrained eye, it has often been quietly accumulating, and the cost to repair is far greater than it would have been if caught early, or even better, during the construction phase.

This entire root-cause evaluation was performed for under $500, helping the property owner identify targeted repairs, create a plan of action, avoid unnecessary work and destruction, prevent costly future damage, and, most importantly, gain peace of mind.

Disclaimer:

This evaluation was a limited-scope technical assessment and troubleshooting service conducted at the property owner's request, following a recommendation by a local engineer. It applies only to the conditions observed and tested on the date of the evaluation.

I do not perform regulatory inspections, engineering certifications, or guarantee performance, safety, or compliance under Costa Rican law. These findings are based solely on visible conditions and agreed testing methods within the defined scope of work. Recommendations should be verified and implemented by qualified and experienced contractors before any repairs or restoration work is undertaken.

Christopher Drown
CR Home Build Advisory

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