A home matrix is a weighted scoring table that ranks properties against the criteria you care about most. You rate each criterion by importance from 1 to 5, score each home from 1 to 5, and multiply the two. The home with the highest total wins — often not the one you expected.
Most buyers view six to ten homes before making an offer. By the fourth viewing, the details blur. The kitchen from the second house attaches itself to the garden of the fifth, and the decision quietly stops being about the property and starts being about whichever home you saw most recently, or in the best light, or on the day the weather held.
The matrix removes that. It is one page, eight rows, and about ten minutes of work. What it produces is not a feeling. It is a number.
What is a home matrix?
A home matrix is a decision tool that compares properties across fixed criteria using weighted scores. It has three components:
- Criteria — the eight to ten features that genuinely matter to you
- Weight — how important each one is, rated 1 to 5
- Score — how well each home delivers on it, rated 1 to 5
Multiply weight by score for every row. Add the columns. The highest total is your answer.
The weighting is the part most people skip, and it is the part that does the work. Without it, a home with an excellent staff room and a two-hour commute can outscore one that is merely good at everything. With it, the criteria you called essential carry five times the influence of the ones you called optional.
Why buyers need one now
Property is the largest purchase most South Africans will make. The average purchase price recorded by ooba Home Loans in the second quarter of 2026 was R1,766,796, up 4.2% year on year. For first-time buyers it was R1,315,396.
That decision is now being made in a more expensive borrowing environment. The South African Reserve Bank raised the repo rate by 25 basis points to 7.00% in May 2026 — the first increase in over three years — and held it there on 23 July 2026. Prime sits at 10.50%.
At that rate, over twenty years, the difference between the right home and the nearly-right home is not a matter of taste. It is a number with six figures in it.
The golden triangle: school, work, social
Before scoring anything, place each home inside the golden triangle. Three points:
- School — proximity and access to the schools you would realistically use
- Work — the commute, measured at the hour you would actually drive it, not on a Sunday
- Social — the amenities, restaurants, gyms and people that make up your week
A home that sits well inside all three is rare. A home that fails two of them will wear on you daily, no matter how good the finishes are. Most buyers over-index on the house and under-index on where it sits. The triangle corrects that, because location is the only feature you cannot renovate.
Drive the commute before you score it. Twice.
Adapt the rows. If load-shedding resilience, a north-facing garden, fibre availability or pet-friendly rules matter to your household, add them. Eight to ten rows is the useful range — fewer and it misses things, more and it becomes noise.
How to use the home matrix in five steps
1. List your criteria and name your deal breakers. Separate the non-negotiable from the desirable before you view anything. For a family of four, three bedrooms is structural, not preferential. Deal breakers do not go in the matrix — they filter which homes get into it at all.
2. Set your weights before you view. This matters. Assign importance from 1 to 5 while you are still objective, at your kitchen table, not standing in someone's entrance hall. Weights set after viewing will bend toward whichever house you have already decided you love.
3. Score each home immediately after the viewing. Not that evening. In the car. Memory degrades fast and flatters the most recent property.
4. Multiply and total. Weight × score for each row. Add each column. A ten-row matrix has a maximum of 250 points.
5. Interrogate the result before you accept it. If the winner surprises you, that is the tool working. If you find yourself wanting to change the weights to make a different home win, you have learnt something useful about what you actually want — but change the weights honestly, or not at all.
Adapt the rows. If load-shedding resilience, a north-facing garden, fibre availability or pet-friendly rules matter to your household, add them. Eight to ten rows is the useful range — fewer and it misses things, more and it becomes noise.
Home 2 is the beautiful one. Best finishes, best layout, most aesthetically appealing, and the buyer walked out of that viewing certain.
On raw scores, ignoring weight, Home 1 and Home 2 are almost level — 32 against 31. Weighted, the gap opens to seventeen points, because Home 2 is weakest exactly where this buyer is strictest: budget and commute. Home 2 is the better house. Home 1 is the better decision.
That gap is the entire value of the exercise.
Common mistakes to avoid
- Scoring before weighting. The weights must be set first, and set cold.
- Too many criteria. Fifteen rows dilutes everything to the same value. Keep it to eight or ten.
- Scoring from the listing. Photographs are marketing. Score from the viewing.
- Ignoring the running costs. Levies, rates, security, backup power and maintenance are part of affordability, not separate from it. If they vary meaningfully between your three homes, give them a row.
- Scoring alone when you are buying with someone. Two people, two matrices, compared afterwards. The disagreements are the most valuable output.
Frequently asked questions
What is a home matrix? A weighted scoring table used to compare properties objectively. Each criterion is rated for importance from 1 to 5, each home is scored from 1 to 5 on that criterion, and the two are multiplied. The home with the highest total is the strongest fit.
How many homes should I compare? Three is the practical number. Fewer gives you no contrast; more and the scoring loses precision. Shortlist to your best three, then run the matrix.
What is the golden triangle in property? The relationship between a home's proximity to school, work and social amenities. A property that balances all three tends to hold its value and suit daily life better than one that excels on only one point.
Should I score a home before or after making an offer? Before. The matrix is a decision tool, not a justification tool. Used after an offer, it will simply confirm what you have already chosen.
Can I use a home matrix when selling? The same logic applies in reverse. Score your own home on the criteria buyers in your area weight most heavily, and you will see quickly where it competes and where it needs work before listing.